/* Zelen Quantum Encryption — Application Styles */
/* Uses Gruvbox variables from gruvbox.css */

/* ── Reset & Base ──────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; scroll-behavior: smooth; }

body {
  background-color: var(--gb-bg0-hard);
  color: var(--gb-fg1);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  background-image:
    linear-gradient(rgba(254,128,25,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(254,128,25,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* ── Typography ────────────────────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  color: var(--gb-fg0);
  font-weight: 700;
  line-height: 1.2;
}
h1 { font-size: 2.5rem; }
h2 { font-size: 1.875rem; }
h3 { font-size: 1.375rem; }
h4 { font-size: 1.125rem; }

p { margin-bottom: 1rem; }
a { color: var(--gb-orange); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--gb-yellow); text-decoration: underline; }

code, kbd, samp, pre {
  font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  font-size: 0.875rem;
}

code {
  background: var(--gb-bg1);
  color: var(--gb-green);
  padding: 0.15em 0.4em;
  border-radius: 4px;
}

pre {
  background: var(--gb-bg0-hard);
  border: 1px solid var(--gb-bg2);
  border-radius: 8px;
  padding: 1.25rem;
  overflow-x: auto;
  color: var(--gb-fg2);
}

pre code { background: transparent; padding: 0; color: inherit; }

/* ── Layout ────────────────────────────────────────────────────────────────── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.container-sm { max-width: 800px; }
.container-lg { max-width: 1400px; }

/* ── Navigation ────────────────────────────────────────────────────────────── */
.nav {
  background: var(--gb-bg0);
  border-bottom: 2px solid var(--gb-bg1);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 0 1.5rem;
  height: 60px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--gb-fg0);
  font-weight: 800;
  font-size: 1.2rem;
  text-decoration: none;
  margin-right: 2rem;
  letter-spacing: -0.02em;
}
.nav-logo-mark {
  color: var(--gb-orange);
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.1rem;
  background: rgba(254,128,25,0.12);
  border: 1px solid rgba(254,128,25,0.3);
  border-radius: 6px;
  padding: 2px 8px;
}
.nav-logo:hover { text-decoration: none; color: var(--gb-orange); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 0;
  list-style: none;
  flex: 1;
}
.nav-links a {
  display: flex;
  align-items: center;
  padding: 0 0.85rem;
  height: 60px;
  color: var(--gb-fg4);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
  white-space: nowrap;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--gb-orange);
  border-bottom-color: var(--gb-orange);
  text-decoration: none;
}
.nav-badge {
  font-size: 0.65rem;
  background: var(--gb-orange);
  color: var(--gb-bg0-hard);
  border-radius: 99px;
  padding: 1px 5px;
  margin-left: 4px;
  font-weight: 700;
  vertical-align: middle;
}

/* ── Home background canvas ────────────────────────────────────────────────── */
#zelen-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.55;
}
/* Ensure all page content sits above the canvas */
.nav, main, footer {
  position: relative;
  z-index: 1;
}

/* ── Hero Section ──────────────────────────────────────────────────────────── */
.hero {
  padding: 5rem 1.5rem 3rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(254,128,25,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.hero-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--gb-orange);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  margin-bottom: 1.25rem;
  letter-spacing: -0.03em;
}
.ht-zelen {
  background: linear-gradient(135deg, var(--gb-aqua) 0%, var(--gb-green) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.ht-quantum {
  background: linear-gradient(135deg, var(--gb-orange) 0%, var(--gb-yellow) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.ht-encryption {
  background: linear-gradient(135deg, var(--gb-purple) 0%, var(--gb-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: 1.2rem;
  color: var(--gb-fg3);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Buttons ───────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.5rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
  white-space: nowrap;
}
.btn-primary {
  background: var(--gb-orange);
  color: var(--gb-bg0-hard);
}
.btn-primary:hover {
  background: var(--gb-yellow);
  color: var(--gb-bg0-hard);
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(254,128,25,0.3);
}
.btn-secondary {
  background: var(--gb-bg1);
  color: var(--gb-fg1);
  border: 1px solid var(--gb-bg2);
}
.btn-secondary:hover {
  background: var(--gb-bg2);
  color: var(--gb-fg0);
  text-decoration: none;
  border-color: var(--gb-bg3);
}
.btn-outline {
  background: transparent;
  color: var(--gb-orange);
  border: 1.5px solid var(--gb-orange);
}
.btn-outline:hover {
  background: rgba(254,128,25,0.1);
  text-decoration: none;
}
.btn-danger {
  background: var(--gb-red-dim);
  color: var(--gb-fg0);
}
.btn-danger:hover { background: var(--gb-red); text-decoration: none; }
.btn-sm { padding: 0.4rem 0.9rem; font-size: 0.8rem; }
.btn-lg { padding: 0.85rem 2rem; font-size: 1rem; }
.btn[disabled], .btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* ── Cards ─────────────────────────────────────────────────────────────────── */
.card {
  background: var(--gb-bg0);
  border: 1px solid var(--gb-bg1);
  border-radius: 12px;
  padding: 1.5rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.card:hover { border-color: var(--gb-bg3); }
.card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--gb-bg1);
}
.card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--gb-fg0);
  margin: 0;
}
.card-icon {
  width: 36px;
  height: 36px;
  background: rgba(254,128,25,0.12);
  border: 1px solid rgba(254,128,25,0.25);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.card-body { color: var(--gb-fg3); font-size: 0.9rem; }

.card-glow {
  box-shadow: 0 0 0 1px rgba(254,128,25,0.2), 0 4px 24px rgba(254,128,25,0.08);
  border-color: rgba(254,128,25,0.3);
}

/* Feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

/* Content visuals */
.visual-panel {
  margin: 2rem 0;
  border: 1px solid var(--gb-bg2);
  border-radius: 8px;
  overflow: hidden;
  background: var(--gb-bg0);
  box-shadow: 0 16px 48px rgba(0,0,0,0.22);
}
.visual-panel img {
  display: block;
  width: 100%;
  height: auto;
}
.visual-panel--wide img {
  aspect-ratio: 16 / 7;
  object-fit: cover;
}
.visual-panel--contain {
  padding: 0.75rem;
}
.visual-panel--contain img {
  border-radius: 6px;
}
.visual-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}
.visual-caption {
  padding: 0.75rem 1rem;
  color: var(--gb-fg4);
  font-size: 0.82rem;
  border-top: 1px solid var(--gb-bg2);
  background: color-mix(in srgb, var(--gb-bg1) 70%, var(--gb-bg0));
}

/* Status grid */
.status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}
.status-item {
  background: var(--gb-bg0);
  border: 1px solid var(--gb-bg1);
  border-radius: 10px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.status-label {
  font-size: 0.75rem;
  font-family: monospace;
  color: var(--gb-gray);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.status-value {
  font-size: 1rem;
  font-weight: 700;
  color: var(--gb-fg0);
  font-family: monospace;
}
.status-ok   { color: var(--gb-green); }
.status-warn { color: var(--gb-yellow); }
.status-err  { color: var(--gb-red); }
.status-mock { color: var(--gb-red); }

/* ── Forms ─────────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 1.25rem; }
.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gb-fg2);
  margin-bottom: 0.4rem;
  font-family: monospace;
  letter-spacing: 0.03em;
}
.form-label .required { color: var(--gb-red); margin-left: 2px; }
.form-hint {
  font-size: 0.78rem;
  color: var(--gb-gray);
  margin-top: 0.3rem;
}
.form-control {
  display: block;
  width: 100%;
  padding: 0.65rem 0.9rem;
  background: var(--gb-bg1);
  border: 1.5px solid var(--gb-bg2);
  border-radius: 8px;
  color: var(--gb-fg1);
  font-size: 0.9rem;
  font-family: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}
.form-control:focus {
  border-color: var(--gb-orange);
  box-shadow: 0 0 0 3px rgba(254,128,25,0.12);
}
.form-control::placeholder { color: var(--gb-bg4); }
.form-control:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
select.form-control { cursor: pointer; }
textarea.form-control { resize: vertical; min-height: 120px; font-family: monospace; }

.form-control-mono { font-family: 'JetBrains Mono', monospace; font-size: 0.8rem; }

.checkbox-group { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.checkbox-item { display: flex; align-items: center; gap: 0.4rem; cursor: pointer; }
.checkbox-item input[type="checkbox"] { accent-color: var(--gb-orange); width: 15px; height: 15px; cursor: pointer; }
.checkbox-item label { font-size: 0.85rem; color: var(--gb-fg2); cursor: pointer; }

.radio-group { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.radio-item { display: flex; align-items: center; gap: 0.4rem; cursor: pointer; }
.radio-item input[type="radio"] { accent-color: var(--gb-orange); cursor: pointer; }

/* ── File Dropzone ─────────────────────────────────────────────────────────── */
.dropzone {
  border: 2px dashed var(--gb-bg3);
  border-radius: 12px;
  padding: 2.5rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  position: relative;
  background: rgba(60,56,54,0.3);
}
.dropzone:hover,
.dropzone.dragover {
  border-color: var(--gb-orange);
  background: rgba(254,128,25,0.05);
}
.dropzone input[type="file"] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}
.dropzone-icon { font-size: 2.5rem; margin-bottom: 0.75rem; opacity: 0.6; }
.dropzone-text {
  color: var(--gb-fg3);
  font-size: 0.9rem;
}
.dropzone-text strong { color: var(--gb-orange); }
.dropzone-hint {
  font-size: 0.78rem;
  color: var(--gb-gray);
  margin-top: 0.4rem;
  font-family: monospace;
}
.dropzone-selected {
  background: rgba(184,187,38,0.08);
  border-color: var(--gb-green);
}
.dropzone-selected .dropzone-text { color: var(--gb-green); }

/* ── Passphrase Label Row (label + random button) ──────────────────────────── */
.passphrase-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.4rem;
}
.passphrase-label-row .form-label { margin-bottom: 0; }

.btn-passphrase-random {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.65rem;
  font-size: 0.74rem;
  font-family: 'JetBrains Mono', monospace;
  color: var(--gb-aqua);
  background: rgba(131,165,152,0.08);
  border: 1px solid rgba(131,165,152,0.3);
  border-radius: 5px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
  white-space: nowrap;
}
.btn-passphrase-random:hover {
  background: rgba(131,165,152,0.18);
  border-color: rgba(131,165,152,0.55);
  color: var(--gb-fg1);
}
.btn-passphrase-random.passphrase-random--flash {
  background: rgba(131,165,152,0.3);
  border-color: var(--gb-aqua);
}

/* ── Passphrase Input with Toggle ──────────────────────────────────────────── */
.passphrase-input-wrap {
  position: relative;
}
.passphrase-has-toggle {
  padding-right: 2.6rem;
}
.passphrase-toggle-btn {
  position: absolute;
  right: 0.65rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  padding: 0.2rem;
  cursor: pointer;
  color: var(--gb-fg4);
  display: flex;
  align-items: center;
  transition: color 0.15s;
}
.passphrase-toggle-btn:hover { color: var(--gb-fg1); }

/* ── Passphrase Strength ───────────────────────────────────────────────────── */
.passphrase-strength { margin-top: 0.5rem; }
.strength-bar {
  height: 4px;
  background: var(--gb-bg2);
  border-radius: 99px;
  overflow: hidden;
  margin-bottom: 0.25rem;
}
.strength-fill {
  height: 100%;
  border-radius: 99px;
  transition: width 0.3s, background 0.3s;
}
.strength-label { font-size: 0.75rem; color: var(--gb-gray); font-family: monospace; }

/* ── FAQ Layout ────────────────────────────────────────────────────────────── */
.faq-layout {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 3rem;
  align-items: start;
  padding-top: 2.5rem;
}
@media (max-width: 768px) {
  .faq-layout { grid-template-columns: 1fr; gap: 1.5rem; }
  .faq-toc { display: none; }
}

/* Sticky sidebar TOC */
.faq-toc {
  position: sticky;
  top: 1.5rem;
}
.faq-toc-title {
  font-size: 0.65rem;
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gb-fg4);
  margin-bottom: 0.6rem;
}
.faq-toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}
.faq-toc-list a {
  display: block;
  padding: 0.3rem 0.6rem;
  font-size: 0.82rem;
  color: var(--gb-fg3);
  text-decoration: none;
  border-radius: 5px;
  border-left: 2px solid transparent;
  transition: color 0.15s, background 0.15s, border-color 0.15s;
}
.faq-toc-list a:hover {
  color: var(--gb-fg1);
  background: var(--gb-bg1);
  border-left-color: var(--gb-aqua);
}

/* FAQ Section */
.faq-section {
  margin-bottom: 3rem;
  scroll-margin-top: 1.5rem;
}
.faq-section-label {
  font-size: 0.65rem;
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--gb-aqua);
  margin-bottom: 0.4rem;
}
.faq-section-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--gb-fg1);
  margin: 0 0 1.25rem;
}

/* FAQ accordion item */
.faq-item {
  border: 1px solid var(--gb-bg2);
  border-radius: 8px;
  margin-bottom: 0.6rem;
  overflow: hidden;
  transition: border-color 0.15s;
}
.faq-item[open] {
  border-color: rgba(131,165,152,0.35);
}
.faq-item summary.faq-q {
  list-style: none;
  padding: 0.9rem 1.1rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--gb-fg1);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  user-select: none;
  background: var(--gb-bg1);
  transition: background 0.15s;
}
.faq-item summary.faq-q::-webkit-details-marker { display: none; }
.faq-item summary.faq-q::after {
  content: '+';
  font-size: 1.1rem;
  color: var(--gb-aqua);
  flex-shrink: 0;
  line-height: 1;
  transition: transform 0.2s;
}
.faq-item[open] summary.faq-q::after {
  content: '−';
}
.faq-item summary.faq-q:hover {
  background: var(--gb-bg2);
}
.faq-item[open] summary.faq-q {
  background: rgba(131,165,152,0.06);
  border-bottom: 1px solid rgba(131,165,152,0.2);
}

.faq-a {
  padding: 1rem 1.1rem 1.1rem;
  font-size: 0.875rem;
  color: var(--gb-fg3);
  line-height: 1.7;
  background: var(--gb-bg0);
}
.faq-a p { margin: 0 0 0.75rem; }
.faq-a p:last-child { margin-bottom: 0; }
.faq-a code {
  background: var(--gb-bg2);
  color: var(--gb-aqua);
  padding: 1px 5px;
  border-radius: 3px;
  font-size: 0.82rem;
}
.faq-a strong { color: var(--gb-fg2); }

.faq-list {
  margin: 0.5rem 0 0.75rem 0;
  padding-left: 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.faq-list--ordered { list-style: decimal; }
.faq-list:not(.faq-list--ordered) { list-style: disc; }
.faq-list li { line-height: 1.65; }

.faq-table-wrap { overflow-x: auto; margin: 0.5rem 0 0.25rem; }
.faq-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}
.faq-table th {
  text-align: left;
  padding: 0.45rem 0.75rem;
  font-size: 0.7rem;
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--gb-fg4);
  background: var(--gb-bg1);
  border-bottom: 1px solid var(--gb-bg2);
}
.faq-table td {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--gb-bg2);
  color: var(--gb-fg3);
  vertical-align: top;
}
.faq-table tr:last-child td { border-bottom: none; }

.faq-theorem {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: var(--gb-yellow);
  background: rgba(250,189,47,0.06);
  border: 1px solid rgba(250,189,47,0.2);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  margin: 0.75rem 0;
  line-height: 1.8;
}

.link-inline {
  color: var(--gb-aqua);
  text-decoration: none;
  border-bottom: 1px solid rgba(131,165,152,0.35);
}
.link-inline:hover {
  color: var(--gb-fg1);
  border-bottom-color: var(--gb-aqua);
}

/* ── Flash Messages ────────────────────────────────────────────────────────── */
.flash { display: flex; align-items: flex-start; gap: 0.75rem; padding: 0.9rem 1.25rem; border-radius: 8px; margin-bottom: 1rem; font-size: 0.9rem; }
.flash-icon { font-size: 1.1rem; flex-shrink: 0; line-height: 1.4; }
.flash-msg { flex: 1; }
.flash-success { background: rgba(184,187,38,0.1); border: 1px solid rgba(184,187,38,0.25); color: var(--gb-green); }
.flash-error   { background: rgba(251,73,52,0.1);  border: 1px solid rgba(251,73,52,0.25);  color: var(--gb-red); }
.flash-warning { background: rgba(250,189,47,0.1); border: 1px solid rgba(250,189,47,0.25); color: var(--gb-yellow); }
.flash-info    { background: rgba(131,165,152,0.1);border: 1px solid rgba(131,165,152,0.25);color: var(--gb-blue); }
.flash-dismiss { cursor: pointer; background: none; border: none; color: inherit; font-size: 1.1rem; padding: 0; margin-left: auto; opacity: 0.7; }
.flash-dismiss:hover { opacity: 1; }

/* ── Mock Warning Banner ───────────────────────────────────────────────────── */
.mock-banner {
  background: rgba(251,73,52,0.12);
  border: 2px solid var(--gb-red);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.mock-banner-icon { font-size: 1.5rem; }
.mock-banner-text { flex: 1; }
.mock-banner-title { font-weight: 700; color: var(--gb-red); font-size: 0.95rem; }
.mock-banner-body  { font-size: 0.85rem; color: var(--gb-fg3); margin-top: 0.15rem; }

/* ── Crypto Status Widget ──────────────────────────────────────────────────── */
.crypto-status {
  background: var(--gb-bg0);
  border: 1px solid var(--gb-bg1);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
  margin-bottom: 1.5rem;
}
.crypto-status-item { display: flex; flex-direction: column; gap: 0.15rem; }
.crypto-status-key {
  font-size: 0.7rem;
  font-family: monospace;
  color: var(--gb-gray);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.crypto-status-val {
  font-size: 0.85rem;
  font-family: monospace;
  font-weight: 700;
  color: var(--gb-fg0);
}

/* ── Terminal / Code Panels ────────────────────────────────────────────────── */
.terminal {
  background: var(--gb-bg0-hard);
  border: 1px solid var(--gb-bg2);
  border-radius: 10px;
  overflow: hidden;
}
.terminal-header {
  background: var(--gb-bg1);
  padding: 0.5rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-bottom: 1px solid var(--gb-bg2);
}
.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.terminal-dot-red    { background: #ff5f57; }
.terminal-dot-yellow { background: #ffbd2e; }
.terminal-dot-green  { background: #28c840; }
.terminal-title { font-family: monospace; font-size: 0.78rem; color: var(--gb-gray); margin-left: 0.5rem; }
.terminal-body { padding: 1rem 1.25rem; font-family: monospace; font-size: 0.82rem; line-height: 1.7; color: var(--gb-fg2); overflow-x: auto; }
.terminal-body .t-comment { color: var(--gb-gray); }
.terminal-body .t-string  { color: var(--gb-green); }
.terminal-body .t-key     { color: var(--gb-blue); }
.terminal-body .t-val     { color: var(--gb-yellow); }
.terminal-body .t-orange  { color: var(--gb-orange); }
.terminal-body .t-red     { color: var(--gb-red); }

/* Copy button */
.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.3rem 0.7rem;
  background: var(--gb-bg2);
  border: 1px solid var(--gb-bg3);
  border-radius: 5px;
  color: var(--gb-fg3);
  font-size: 0.75rem;
  font-family: monospace;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.copy-btn:hover { background: var(--gb-bg3, #665c54); color: var(--gb-fg0); }
.copy-btn.copied,
.icon-btn.copied {
  background: color-mix(in srgb, var(--gb-green) 15%, var(--gb-bg1));
  color: var(--gb-green);
  border-color: color-mix(in srgb, var(--gb-green) 40%, transparent);
  pointer-events: none;
}

/* ── Header Map ────────────────────────────────────────────────────────────── */
.header-map {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  overflow-x: auto;
  padding: 1.5rem;
  background: var(--gb-bg0-hard);
  border-radius: 12px;
  border: 1px solid var(--gb-bg2);
}
.header-map-row {
  display: flex;
  align-items: stretch;
  margin-bottom: 3px;
  border-radius: 4px;
  overflow: hidden;
}
.header-map-offset {
  min-width: 56px;
  padding: 4px 8px;
  color: var(--gb-gray);
  background: rgba(40,40,40,0.5);
  text-align: right;
  border-right: 1px solid var(--gb-bg2);
}
.header-map-size {
  min-width: 40px;
  padding: 4px 8px;
  color: var(--gb-bg4);
  text-align: center;
}
.header-map-name {
  flex: 1;
  padding: 4px 10px;
  background: rgba(60,56,54,0.4);
  color: var(--gb-fg2);
}
.header-map-desc {
  flex: 2;
  padding: 4px 10px;
  color: var(--gb-fg4);
  font-size: 0.72rem;
}

/* ZELC glow — the star of the show */
.header-map-row.zelc {
  animation: zelcPulse 2s ease-in-out infinite;
}
.header-map-row.zelc .header-map-offset { color: var(--gb-orange); }
.header-map-row.zelc .header-map-name {
  color: var(--gb-orange);
  background: rgba(254,128,25,0.12);
  font-weight: 700;
}
.header-map-row.zelc .header-map-desc { color: var(--gb-yellow); }

@keyframes zelcPulse {
  0%, 100% {
    box-shadow: 0 0 0 1px rgba(254,128,25,0.3), 0 0 8px rgba(254,128,25,0.2);
  }
  50% {
    box-shadow: 0 0 0 2px rgba(254,128,25,0.6), 0 0 20px rgba(254,128,25,0.4), 0 0 40px rgba(254,128,25,0.15);
  }
}
.header-map-row.magic .header-map-name { color: var(--gb-blue); background: rgba(131,165,152,0.08); }
.header-map-row.nonce .header-map-name { color: var(--gb-purple); background: rgba(211,134,155,0.08); }
.header-map-row.auth-tag .header-map-name { color: var(--gb-green); background: rgba(184,187,38,0.08); }
.header-map-row.kem-ct .header-map-name { color: var(--gb-aqua); background: rgba(142,192,124,0.08); }
.header-map-row.fp .header-map-name { color: var(--gb-yellow); background: rgba(250,189,47,0.08); }

/* ── Sections ──────────────────────────────────────────────────────────────── */
.section { padding: 3rem 1.5rem; }
.section-lg { padding: 5rem 1.5rem; }
.section-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--gb-fg0);
  margin-bottom: 0.5rem;
}
.section-subtitle {
  color: var(--gb-fg4);
  font-size: 1rem;
  margin-bottom: 2.5rem;
}
.section-divider {
  border: none;
  border-top: 1px solid var(--gb-bg1);
  margin: 3rem 0;
}

/* ── Pipeline Diagram ──────────────────────────────────────────────────────── */
.pipeline {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  align-items: center;
  margin: 2rem 0;
  overflow-x: auto;
  padding-bottom: 0.5rem;
}
.pipeline-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  min-width: 100px;
}
.pipeline-box {
  background: var(--gb-bg1);
  border: 1.5px solid var(--gb-bg3);
  border-radius: 8px;
  padding: 0.6rem 0.9rem;
  text-align: center;
  font-family: monospace;
  font-size: 0.75rem;
  color: var(--gb-fg2);
  white-space: nowrap;
}
.pipeline-box.pq { border-color: var(--gb-orange); color: var(--gb-orange); background: rgba(254,128,25,0.08); }
.pipeline-box.kdf { border-color: var(--gb-purple); color: var(--gb-purple); background: rgba(211,134,155,0.08); }
.pipeline-box.aead { border-color: var(--gb-blue); color: var(--gb-blue); background: rgba(131,165,152,0.08); }
.pipeline-box.out { border-color: var(--gb-green); color: var(--gb-green); background: rgba(184,187,38,0.08); font-weight: 700; }
.pipeline-label { font-size: 0.65rem; color: var(--gb-gray); font-family: monospace; text-align: center; }
.pipeline-arrow {
  color: var(--gb-bg3);
  font-size: 1.5rem;
  padding: 0 0.25rem;
  display: flex;
  align-items: center;
  align-self: flex-start;
  margin-top: 0.6rem;
}

/* ── Security Theorem ──────────────────────────────────────────────────────── */
.theorem-box {
  background: var(--gb-bg0-hard);
  border: 1px solid var(--gb-orange);
  border-radius: 10px;
  padding: 1.5rem 2rem;
  font-family: monospace;
  margin: 2rem 0;
  position: relative;
  overflow: hidden;
}
.theorem-box::before {
  content: 'SECURITY THEOREM';
  position: absolute;
  top: 0;
  right: 0;
  background: var(--gb-orange);
  color: var(--gb-bg0-hard);
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  padding: 3px 10px;
  border-bottom-left-radius: 6px;
}
.theorem-line { font-size: 0.9rem; color: var(--gb-fg1); line-height: 2; }
.theorem-var { color: var(--gb-orange); font-style: italic; }
.theorem-op  { color: var(--gb-yellow); }
.theorem-adv { color: var(--gb-purple); }
.theorem-comment { color: var(--gb-gray); font-size: 0.78rem; }

/* ── Tables ────────────────────────────────────────────────────────────────── */
.table-wrapper { overflow-x: auto; border-radius: 10px; border: 1px solid var(--gb-bg2); }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
thead th {
  background: var(--gb-bg1);
  color: var(--gb-fg2);
  font-weight: 700;
  padding: 0.75rem 1rem;
  text-align: left;
  font-family: monospace;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}
tbody td {
  padding: 0.65rem 1rem;
  border-top: 1px solid var(--gb-bg1);
  color: var(--gb-fg3);
  vertical-align: top;
}
tbody tr:hover { background: rgba(60,56,54,0.4); }
.td-mono { font-family: monospace; font-size: 0.8rem; color: var(--gb-fg2); }
.td-break { word-break: break-all; }

/* ── Badges ────────────────────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 700;
  font-family: monospace;
  letter-spacing: 0.03em;
}
.badge-orange { background: rgba(254,128,25,0.15); color: var(--gb-orange); border: 1px solid rgba(254,128,25,0.3); }
.badge-green  { background: rgba(184,187,38,0.15); color: var(--gb-green);  border: 1px solid rgba(184,187,38,0.3); }
.badge-red    { background: rgba(251,73,52,0.15);  color: var(--gb-red);    border: 1px solid rgba(251,73,52,0.3); }
.badge-blue   { background: rgba(131,165,152,0.15);color: var(--gb-blue);   border: 1px solid rgba(131,165,152,0.3); }
.badge-yellow { background: rgba(250,189,47,0.15); color: var(--gb-yellow); border: 1px solid rgba(250,189,47,0.3); }
.badge-gray   { background: rgba(146,131,116,0.15);color: var(--gb-gray);   border: 1px solid rgba(146,131,116,0.3); }
.badge-purple { background: rgba(211,134,155,0.15);color: var(--gb-purple); border: 1px solid rgba(211,134,155,0.3); }

/* ── Cryptographic Foundations / Math ─────────────────────────────────────── */
.math-section { margin-bottom: 1rem; }

.math-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}

.math-card {
  background: var(--gb-bg1);
  border: 1px solid var(--gb-bg2);
  border-radius: 10px;
  padding: 1.4rem 1.5rem 1.25rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.math-card:hover {
  border-color: var(--gb-aqua);
  box-shadow: 0 0 18px rgba(131,165,152,0.12);
}

.math-card-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--gb-orange);
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 0.9rem;
  font-weight: 600;
}

.math-eq {
  background: var(--gb-bg0-hard);
  border-left: 3px solid var(--gb-aqua);
  border-radius: 4px;
  padding: 0.85rem 1rem;
  overflow-x: auto;
  margin-bottom: 0.9rem;
  text-align: center;
}

/* Force KaTeX visible on dark background — override all nested color rules */
.math-eq .katex,
.math-eq .katex * { color: #ebdbb2 !important; }
.math-eq .katex { font-size: 1rem; }
.math-eq .katex .mop,
.math-eq .katex .mop * { color: #83a598 !important; }
.math-eq .katex .mord.text,
.math-eq .katex .mord.text * { color: #8ec07c !important; }
.math-eq .katex .mrel,
.math-eq .katex .mrel * { color: #fabd2f !important; }

.math-card-desc {
  font-size: 0.82rem;
  color: var(--gb-fg3);
  line-height: 1.65;
}

.math-inline .katex,
.math-inline .katex * { color: #83a598 !important; font-size: 0.9em; }

/* ── Security Invariants ───────────────────────────────────────────────────── */
.invariants-list { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }
.invariants-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.6rem 1rem;
  background: rgba(184,187,38,0.05);
  border: 1px solid rgba(184,187,38,0.1);
  border-radius: 6px;
  font-size: 0.875rem;
  color: var(--gb-fg2);
}
.invariants-list .inv-check { color: var(--gb-green); flex-shrink: 0; font-size: 1rem; }
.invariants-list .inv-warn  { color: var(--gb-yellow); }
.invariants-list .inv-no    { color: var(--gb-red); }

/* ── Page Layout ───────────────────────────────────────────────────────────── */
.page-header {
  padding: 2.5rem 1.5rem 1.5rem;
  border-bottom: 1px solid var(--gb-bg1);
  margin-bottom: 2rem;
}
.page-header-inner { display: flex; align-items: flex-start; gap: 1.5rem; }
.page-header-icon {
  width: 56px;
  height: 56px;
  background: rgba(254,128,25,0.1);
  border: 1.5px solid rgba(254,128,25,0.25);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  flex-shrink: 0;
}
.page-eyebrow {
  font-size: 0.72rem;
  font-family: monospace;
  color: var(--gb-orange);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.25rem;
}
.page-title { font-size: 2rem; margin-bottom: 0.4rem; }
.page-desc  { color: var(--gb-fg4); font-size: 0.9rem; max-width: 600px; margin: 0; }

/* Two-column form layout */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1.25rem; }
@media (max-width: 700px) {
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
}

/* Result output area */
.result-section {
  background: var(--gb-bg0);
  border: 1px solid var(--gb-bg2);
  border-radius: 12px;
  padding: 1.5rem;
  margin-top: 2rem;
}
.result-section-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--gb-green);
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--gb-bg2);
}

/* Validation checklist */
.validation-list { list-style: none; }
.validation-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--gb-bg1);
  font-size: 0.875rem;
  font-family: monospace;
}
.validation-item:last-child { border-bottom: none; }
.v-pass { color: var(--gb-green); }
.v-fail { color: var(--gb-red); }
.v-warn { color: var(--gb-yellow); }
.v-info { color: var(--gb-blue); }

/* ── Plaintext Warning Banner ──────────────────────────────────────────────── */
.plaintext-warning {
  background: rgba(251,73,52,0.08);
  border: 2px solid rgba(251,73,52,0.4);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
  font-size: 0.85rem;
  color: var(--gb-red);
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}
.plaintext-warning strong { color: var(--gb-red); display: block; margin-bottom: 0.25rem; }

/* ── Footer ────────────────────────────────────────────────────────────────── */
.footer {
  background: var(--gb-bg0);
  border-top: 1px solid var(--gb-bg2);
  padding: 2.5rem 1.5rem 1.75rem;
  margin-top: 4rem;
  font-size: 0.8rem;
  color: var(--gb-gray);
}
.footer a { color: var(--gb-gray); text-decoration: none; }
.footer a:hover { color: var(--gb-orange); }

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--gb-bg2);
}
.footer-brand { display: flex; align-items: baseline; gap: 0.5rem; }
.footer-brand-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--gb-fg1);
  letter-spacing: 0.01em;
}
.footer-brand-org { font-size: 0.8rem; color: var(--gb-gray); }
.footer-links { display: flex; gap: 1.25rem; flex-wrap: wrap; }
.footer-links a { font-size: 0.8rem; }

.footer-disclaimer {
  font-size: 0.72rem;
  color: var(--gb-bg4);
  max-width: 780px;
  line-height: 1.55;
  margin-bottom: 1rem;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--gb-bg1);
}
.footer-copy { font-size: 0.7rem; color: var(--gb-bg4); }
.footer-credit {
  font-size: 0.78rem;
  color: var(--gb-gray);
  font-weight: 500;
}

/* ── Utility ───────────────────────────────────────────────────────────────── */
.text-orange  { color: var(--gb-orange); }
.text-green   { color: var(--gb-green); }
.text-red     { color: var(--gb-red); }
.text-yellow  { color: var(--gb-yellow); }
.text-blue    { color: var(--gb-blue); }
.text-gray    { color: var(--gb-gray); }
.text-fg0     { color: var(--gb-fg0); }
.text-muted   { color: var(--gb-fg4); }
.text-center  { text-align: center; }
.text-mono    { font-family: monospace; }
.text-sm      { font-size: 0.85rem; }
.text-xs      { font-size: 0.75rem; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-gap-1 { gap: 0.5rem; }
.flex-gap-2 { gap: 1rem; }
.flex-wrap { flex-wrap: wrap; }

.w-full { width: 100%; }
.hidden { display: none; }

/* ── Key Generation Result ─────────────────────────────────────────────────── */
.keygen-summary-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: color-mix(in srgb, var(--gb-green) 12%, var(--gb-bg1));
  border: 1px solid color-mix(in srgb, var(--gb-green) 35%, transparent);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
}
.keygen-summary-check {
  font-size: 1.5rem;
  color: var(--gb-green);
  flex-shrink: 0;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  border: 2px solid var(--gb-green);
  display: flex;
  align-items: center;
  justify-content: center;
}
.keygen-summary-title {
  font-weight: 700;
  color: var(--gb-fg0);
  margin-bottom: 0.3rem;
}
.keygen-summary-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.keygen-summary-subject {
  font-family: monospace;
  font-size: 0.85rem;
  color: var(--gb-fg3);
}

/* KV table */
.kv-table { display: flex; flex-direction: column; gap: 0; }
.kv-row {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--gb-bg2);
}
.kv-row:last-child { border-bottom: none; }
.kv-label {
  min-width: 130px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gb-gray);
  padding-top: 0.1rem;
}
.kv-value {
  color: var(--gb-fg1);
  font-size: 0.88rem;
  word-break: break-all;
  flex: 1;
}
.kv-copyable { cursor: text; user-select: all; }
.kv-copy-row {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

/* File tabs */
.file-tabs-wrap {
  background: var(--gb-bg1);
  border: 1px solid var(--gb-bg2);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 1.5rem;
}
.file-tabs-nav {
  display: flex;
  background: var(--gb-bg0-hard);
  border-bottom: 1px solid var(--gb-bg2);
  overflow-x: auto;
}
.file-tab {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--gb-gray);
  font-size: 0.85rem;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.file-tab:hover { color: var(--gb-fg1); background: var(--gb-bg1); }
.file-tab.active {
  color: var(--gb-fg0);
  border-bottom-color: var(--gb-orange);
  background: var(--gb-bg1);
}
.file-tab-icon { font-size: 1rem; }
.file-tab-label { font-weight: 600; }
.file-tab-ext {
  font-family: monospace;
  font-size: 0.72rem;
  padding: 0.15em 0.5em;
  border-radius: 4px;
  font-weight: 700;
  letter-spacing: 0.03em;
}
.file-tab-ext--red    { background: color-mix(in srgb, var(--gb-red)    20%, transparent); color: var(--gb-red); }
.file-tab-ext--green  { background: color-mix(in srgb, var(--gb-green)  20%, transparent); color: var(--gb-green); }
.file-tab-ext--blue   { background: color-mix(in srgb, var(--gb-blue)   20%, transparent); color: var(--gb-blue); }
.file-tab-ext--orange { background: color-mix(in srgb, var(--gb-orange) 20%, transparent); color: var(--gb-orange); }

.file-tab-panel { display: none; }
.file-tab-panel.active { display: block; }

.file-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--gb-bg2);
  gap: 1rem;
  flex-wrap: wrap;
}
.file-panel-header-left { display: flex; align-items: center; gap: 0.75rem; }
.file-panel-icon {
  font-size: 1.5rem;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.file-panel-icon--red    { background: color-mix(in srgb, var(--gb-red)   15%, var(--gb-bg2)); }
.file-panel-icon--green  { background: color-mix(in srgb, var(--gb-green) 15%, var(--gb-bg2)); }
.file-panel-icon--blue   { background: color-mix(in srgb, var(--gb-blue)  15%, var(--gb-bg2)); }
.file-panel-title {
  font-weight: 700;
  color: var(--gb-fg0);
  font-size: 0.95rem;
}
.file-panel-ext {
  font-family: monospace;
  font-size: 0.8rem;
  color: var(--gb-gray);
  margin-left: 0.4rem;
}
.file-panel-desc { font-size: 0.78rem; color: var(--gb-gray); margin-top: 0.2rem; }
.file-panel-actions { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }

.icon-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.8rem;
  background: var(--gb-bg2);
  border: 1px solid var(--gb-bg3, #665c54);
  border-radius: 6px;
  color: var(--gb-fg3);
  font-size: 0.8rem;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.icon-btn:hover { background: var(--gb-bg3, #665c54); color: var(--gb-fg0); }

/* JSON viewer */
.json-viewer-wrap {
  border-top: 1px solid var(--gb-bg2);
}
.json-viewer-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.4rem 1rem;
  background: var(--gb-bg0);
  border-bottom: 1px solid var(--gb-bg2);
}
.json-viewer-filename {
  font-family: monospace;
  font-size: 0.78rem;
  color: var(--gb-orange);
}
.json-viewer-size {
  font-size: 0.72rem;
  color: var(--gb-gray);
}
.json-viewer {
  overflow-x: auto;
  max-height: 420px;
  overflow-y: auto;
  background: var(--gb-bg0-hard);
}
.json-viewer-pre {
  margin: 0;
  padding: 1.25rem 1.5rem;
  font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--gb-fg1);
  white-space: pre-wrap;
  word-break: break-all;
  tab-size: 2;
}
/* JSON syntax colors */
.jv-key     { color: var(--gb-blue); }
.jv-string  { color: var(--gb-green); }
/* Long base64/hex blobs — wrap at <wbr> hints, slightly dimmed to de-emphasise bulk */
.jv-blob    { color: var(--gb-aqua); opacity: 0.9; }
.jv-number  { color: var(--gb-purple); }
.jv-bool    { color: var(--gb-orange); font-weight: 600; }
.jv-null    { color: var(--gb-red); font-style: italic; }
.jv-bracket { color: var(--gb-yellow); font-weight: 700; }
.jv-colon   { color: var(--gb-fg3); }
.jv-comma   { color: var(--gb-fg3); }

.file-panel-warning {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  margin: 0.75rem 1.25rem;
  padding: 0.65rem 0.9rem;
  background: color-mix(in srgb, var(--gb-red) 12%, var(--gb-bg1));
  border: 1px solid color-mix(in srgb, var(--gb-red) 30%, transparent);
  border-radius: 6px;
  font-size: 0.82rem;
  color: var(--gb-fg3);
}
.file-panel-warning-icon { color: var(--gb-red); flex-shrink: 0; }
.file-panel-note {
  margin: 0.75rem 1.25rem;
  padding: 0.65rem 0.9rem;
  background: color-mix(in srgb, var(--gb-green) 10%, var(--gb-bg1));
  border: 1px solid color-mix(in srgb, var(--gb-green) 25%, transparent);
  border-radius: 6px;
  font-size: 0.82rem;
  color: var(--gb-aqua);
}

/* ── Responsive ────────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .hero { padding: 3rem 1.5rem 2rem; }
  .hero-title { font-size: clamp(2rem, 8vw, 3rem); }
  .nav-links a { padding: 0 0.5rem; font-size: 0.78rem; }
  .visual-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .page-header-inner { flex-direction: column; gap: 0.75rem; }
  .pipeline { gap: 0.25rem; }
}

/* ── Key Derivation Comparison ────────────────────────────────────────────── */
.kd-compare-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.kd-card {
  background: var(--gb-bg1);
  border: 1px solid var(--gb-bg2);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
}
.kd-card:hover { transform: translateY(-3px); box-shadow: 0 8px 32px rgba(0,0,0,0.3); }
.kd-card--pq { border-color: rgba(142,192,124,0.4); box-shadow: 0 0 24px rgba(142,192,124,0.08); }

.kd-card-head {
  padding: 1.1rem 1.25rem 0.9rem;
  border-bottom: 1px solid var(--gb-bg2);
}
.kd-rsa   { background: rgba(254,128,25,0.08); }
.kd-ecc   { background: rgba(131,165,152,0.08); }
.kd-mlkem { background: rgba(142,192,124,0.1); }

.kd-era {
  font-size: 0.68rem;
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gb-fg4);
  display: block;
  margin-bottom: 0.3rem;
}
.kd-name {
  font-size: 1.5rem;
  font-weight: 900;
  margin: 0 0 0.2rem;
  color: var(--gb-fg1);
}
.kd-rsa   .kd-name { color: var(--gb-orange); }
.kd-ecc   .kd-name { color: var(--gb-aqua); }
.kd-mlkem .kd-name { color: var(--gb-green); }

.kd-basis {
  font-size: 0.78rem;
  color: var(--gb-fg3);
  margin: 0;
  font-style: italic;
}

.kd-art {
  background: var(--gb-bg0-hard);
  padding: 0.5rem;
  border-bottom: 1px solid var(--gb-bg2);
}
.kd-svg { width: 100%; height: auto; display: block; }

.kd-how {
  padding: 1.1rem 1.25rem 1rem;
  flex: 1;
  border-bottom: 1px solid var(--gb-bg2);
}

/* Numbered steps as a clean ordered list */
.kd-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  counter-reset: kd;
}
.kd-steps li {
  counter-increment: kd;
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.82rem;
  color: var(--gb-fg3);
  line-height: 1.55;
}
.kd-steps li::before {
  content: counter(kd);
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  line-height: 22px;
  background: var(--gb-bg2);
  color: var(--gb-fg4);
  font-family: monospace;
  font-size: 0.7rem;
  border-radius: 4px;
  text-align: center;
  display: block;
  margin-top: 1px;
}
/* The span wraps all inline content so it's one flex child */
.kd-steps li > span {
  flex: 1;
  min-width: 0;
}
.kd-steps li code {
  display: inline;
  background: var(--gb-bg0-hard);
  color: var(--gb-aqua);
  padding: 1px 5px;
  border-radius: 3px;
  font-size: 0.8rem;
  white-space: nowrap;
}

/* Public / Private key row — direct child of .kd-card, always above .kd-stats */
.kd-keys {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--gb-bg2);
}
.kd-key {
  border-radius: 6px;
  padding: 0.55rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.kd-key--pub  { background: rgba(142,192,124,0.08); border: 1px solid rgba(142,192,124,0.3); }
.kd-key--priv { background: rgba(251,73,52,0.07);   border: 1px solid rgba(251,73,52,0.25); }
.kd-key-label {
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-family: monospace;
}
.kd-key--pub  .kd-key-label { color: var(--gb-green); }
.kd-key--priv .kd-key-label { color: var(--gb-red); }
.kd-key code {
  font-size: 0.82rem;
  color: var(--gb-fg1);
  background: none;
  padding: 0;
  word-break: break-all;
}
.kd-key-size {
  font-size: 0.68rem;
  color: var(--gb-fg4);
  font-family: monospace;
}

/* Stats strip */
.kd-stats {
  background: var(--gb-bg0-hard);
  border-top: 1px solid var(--gb-bg2);
  padding: 0.75rem 1.25rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}
.kd-stat {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  font-size: 0.74rem;
}
.kd-stat-label {
  color: var(--gb-fg4);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: monospace;
}
.kd-stat-val { font-family: monospace; color: var(--gb-fg2); font-size: 0.78rem; }
.kd-broken { color: var(--gb-red) !important; }
.kd-safe   { color: var(--gb-green) !important; font-weight: 700; }

/* Comparison table PQ column highlight */
.td-pq    { color: var(--gb-green); font-weight: 600; background: rgba(142,192,124,0.05); }
.td-broken{ color: var(--gb-red); }
.td-safe  { color: var(--gb-green); font-weight: 700; }

/* ── How It Works special ─────────────────────────────────────────────────── */
.hiw-section { margin-bottom: 4rem; }
.hiw-section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: monospace;
  font-size: 0.72rem;
  color: var(--gb-orange);
  border: 1px solid rgba(254,128,25,0.3);
  border-radius: 99px;
  padding: 0.25rem 0.75rem;
  margin-bottom: 1.25rem;
  letter-spacing: 0.08em;
}

.header-map-title {
  font-family: monospace;
  font-size: 0.85rem;
  color: var(--gb-orange);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.header-map-title::before { content: '▶'; font-size: 0.7rem; }

.zelc-highlight {
  display: inline-block;
  color: var(--gb-orange);
  font-weight: 900;
  font-family: monospace;
  padding: 0.1em 0.4em;
  border-radius: 4px;
  background: rgba(254,128,25,0.15);
  border: 1px solid rgba(254,128,25,0.35);
  animation: zelcInlineGlow 2s ease-in-out infinite;
}
@keyframes zelcInlineGlow {
  0%, 100% { box-shadow: 0 0 6px rgba(254,128,25,0.3); }
  50%       { box-shadow: 0 0 14px rgba(254,128,25,0.6); }
}

/* How it works byte-map visual */
.byte-map {
  display: flex;
  flex-wrap: wrap;
  gap: 3px;
  margin: 1.5rem 0;
  font-family: monospace;
  font-size: 0.68rem;
}
.byte-cell {
  width: 44px;
  height: 38px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  background: var(--gb-bg1);
  border: 1px solid var(--gb-bg2);
  color: var(--gb-fg4);
  gap: 1px;
  transition: all 0.2s;
  cursor: default;
}
.byte-cell:hover { border-color: var(--gb-bg4); color: var(--gb-fg1); }
.byte-cell .bc-offset { font-size: 0.58rem; color: var(--gb-bg4); }
.byte-cell .bc-label  { font-size: 0.65rem; font-weight: 700; }
.byte-cell.bc-magic   { background: rgba(131,165,152,0.12); border-color: var(--gb-blue-dim);   color: var(--gb-blue); }
.byte-cell.bc-meta    { background: rgba(250,189,47,0.08);  border-color: var(--gb-yellow-dim);  color: var(--gb-yellow); }
.byte-cell.bc-fp      { background: rgba(250,189,47,0.06);  border-color: var(--gb-yellow-dim);  color: var(--gb-yellow-dim); }
.byte-cell.bc-nonce   { background: rgba(211,134,155,0.1);  border-color: var(--gb-purple-dim);  color: var(--gb-purple); }
.byte-cell.bc-zelc    {
  background: rgba(254,128,25,0.18);
  border-color: var(--gb-orange);
  color: var(--gb-orange);
  font-weight: 900;
  animation: zelcPulse 2s ease-in-out infinite;
  box-shadow: 0 0 10px rgba(254,128,25,0.3);
}
.byte-cell.bc-tag     { background: rgba(184,187,38,0.1);   border-color: var(--gb-green-dim);   color: var(--gb-green); }
.byte-cell.bc-kem     { background: rgba(142,192,124,0.08); border-color: var(--gb-aqua-dim);    color: var(--gb-aqua); }

/* Progress indicator */
.progress {
  height: 6px;
  background: var(--gb-bg2);
  border-radius: 99px;
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--gb-orange), var(--gb-yellow));
  border-radius: 99px;
  transition: width 0.3s;
  animation: progressPulse 1.5s ease-in-out infinite;
}
@keyframes progressPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* Tabs */
.tabs { display: flex; border-bottom: 1px solid var(--gb-bg2); margin-bottom: 1.5rem; gap: 0; }
.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.25rem;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--gb-fg4);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
  font-family: inherit;
  margin-bottom: -1px;
}
.tab-btn:hover { color: var(--gb-fg1); }
.tab-btn.active { color: var(--gb-orange); border-bottom-color: var(--gb-orange); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── Unified Key Input (ki-*) ───────────────────────────────────────────── */
.ki-wrap { display: flex; flex-direction: column; gap: 0; }

.ki-drop {
  border: 1.5px dashed var(--gb-bg2);
  border-radius: 8px 8px 0 0;
  padding: 1rem 1.25rem;
  background: var(--gb-bg0);
  transition: border-color 0.15s, background 0.15s;
  cursor: default;
  position: relative;
}
.ki-drop:hover { border-color: var(--gb-bg3, #665c54); }
.ki-drop--over {
  border-color: var(--gb-orange);
  background: color-mix(in srgb, var(--gb-orange) 6%, var(--gb-bg0));
}
.ki-drop--loaded {
  border-color: color-mix(in srgb, var(--gb-green) 50%, var(--gb-bg2));
}

.ki-file-input {
  position: absolute; inset: 0; opacity: 0; width: 100%; height: 100%;
  cursor: pointer; z-index: 0;
  /* hidden — only triggered programmatically */
  pointer-events: none;
}

.ki-drop-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  pointer-events: none;
  text-align: center;
}
.ki-drop-icon { color: var(--gb-gray); flex-shrink: 0; }
.ki-drop--over  .ki-drop-icon { color: var(--gb-orange); }
.ki-drop--loaded .ki-drop-icon { color: var(--gb-green); }

.ki-drop-label {
  font-size: 0.85rem;
  color: var(--gb-fg3);
  pointer-events: all;
}
.ki-drop-hint  { font-size: 0.75rem; color: var(--gb-gray); }

.ki-browse-btn {
  background: none;
  border: none;
  color: var(--gb-orange);
  cursor: pointer;
  font-size: inherit;
  padding: 0;
  text-decoration: underline;
  pointer-events: all;
}
.ki-browse-btn:hover { color: var(--gb-yellow); }

.ki-drop-filename {
  font-size: 0.78rem;
  color: var(--gb-green);
  font-family: monospace;
}

.ki-divider {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 0;
  padding: 0 1rem;
  background: var(--gb-bg0);
  border-left: 1.5px solid var(--gb-bg2);
  border-right: 1.5px solid var(--gb-bg2);
}
.ki-divider::before,
.ki-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--gb-bg2);
}
.ki-divider span {
  font-size: 0.7rem;
  color: var(--gb-gray);
  white-space: nowrap;
  padding: 0.4rem 0;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.ki-textarea {
  border-radius: 0 0 8px 8px;
  border-top: none;
  border-color: var(--gb-bg2);
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--gb-aqua);
  background: var(--gb-bg0-hard);
  resize: vertical;
  min-height: 110px;
}
.ki-textarea:focus {
  border-color: var(--gb-orange);
  outline: none;
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--gb-orange) 20%, transparent);
}
.ki-textarea::placeholder { color: var(--gb-bg4); font-style: italic; }

.ki-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 1.4rem;
  margin-top: 0.35rem;
}
.ki-footer-status { font-size: 0.75rem; }
.ki-clear-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background: none;
  border: none;
  color: var(--gb-gray);
  font-size: 0.75rem;
  cursor: pointer;
  padding: 0.1rem 0.3rem;
  border-radius: 4px;
}
.ki-clear-btn:hover { color: var(--gb-red); background: color-mix(in srgb, var(--gb-red) 10%, transparent); }

/* Download buttons group */
.download-group { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.25rem; }
.download-btn {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1.25rem;
  background: var(--gb-bg1);
  border: 1.5px solid var(--gb-bg3);
  border-radius: 10px;
  color: var(--gb-fg1);
  cursor: pointer;
  font-size: 0.875rem;
  font-family: inherit;
  font-weight: 600;
  transition: all 0.2s;
  text-decoration: none;
}
.download-btn:hover { border-color: var(--gb-orange); color: var(--gb-orange); background: rgba(254,128,25,0.05); text-decoration: none; }
.download-btn-icon { font-size: 1.2rem; }
.download-btn-info { display: flex; flex-direction: column; gap: 0.15rem; }
.download-btn-name { font-weight: 700; }
.download-btn-ext  { font-size: 0.72rem; font-family: monospace; color: var(--gb-gray); }

/* Developer docs */
.dev-section { margin-bottom: 3rem; }
.section-desc {
  color: var(--gb-fg4);
  max-width: 760px;
}
.release-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
  margin: 1.25rem 0 0;
}
.release-card {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  min-height: 104px;
  padding: 1rem;
  background: var(--gb-bg0);
  border: 1px solid var(--gb-bg2);
  border-radius: 8px;
  color: var(--gb-fg1);
  text-decoration: none;
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}
.release-card:hover {
  border-color: var(--gb-orange);
  background: color-mix(in srgb, var(--gb-orange) 7%, var(--gb-bg0));
  color: var(--gb-fg0);
  text-decoration: none;
  transform: translateY(-1px);
}
.release-icon {
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  border-radius: 8px;
  background: rgba(254,128,25,0.12);
  border: 1px solid rgba(254,128,25,0.28);
  color: var(--gb-orange);
  font-size: 1.25rem;
}
.release-info {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.release-label {
  color: var(--gb-fg0);
  font-weight: 700;
}
.release-file {
  color: var(--gb-fg3);
  font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  font-size: 0.78rem;
  overflow-wrap: anywhere;
}
.release-size {
  color: var(--gb-aqua);
  font-size: 0.78rem;
  font-weight: 600;
}
.env-table { width: 100%; }
.env-table td { padding: 0.5rem 0.75rem; vertical-align: top; }
.env-key { font-family: monospace; color: var(--gb-blue); font-size: 0.85rem; white-space: nowrap; }
.env-val { font-family: monospace; color: var(--gb-green); font-size: 0.82rem; }
.env-desc { font-size: 0.82rem; color: var(--gb-fg4); }

/* Fingerprint display */
.fingerprint-display {
  font-family: monospace;
  font-size: 0.78rem;
  color: var(--gb-fg2);
  word-break: break-all;
  padding: 0.6rem 0.9rem;
  background: var(--gb-bg0-hard);
  border: 1px solid var(--gb-bg2);
  border-radius: 6px;
  letter-spacing: 0.05em;
}

/* MTE page */
.mte-page {
  padding-bottom: 4rem;
}
.mte-page .section-title {
  color: var(--gb-yellow);
}
.mte-page p {
  color: var(--gb-fg3);
}
.mte-page strong {
  color: var(--gb-fg0);
}
.mte-page-header .page-header-icon {
  font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  color: var(--gb-orange);
  background: color-mix(in srgb, var(--gb-orange) 16%, var(--gb-bg0));
  border-color: color-mix(in srgb, var(--gb-orange) 42%, var(--gb-bg2));
}
.mte-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.9fr);
  gap: 1.5rem;
  align-items: stretch;
  margin-bottom: 3rem;
}
.mte-hero-copy,
.mte-principle-box,
.mte-panel,
.mte-analogy-card,
.mte-callout,
.mte-core-statement,
.mte-copy-box,
.mte-marketing-block,
.mte-final-block,
.mte-analogy-wide,
.mte-inspection {
  background: var(--gb-bg0);
  border: 1px solid var(--gb-bg2);
  border-radius: 8px;
}
.mte-hero-copy {
  padding: 1.5rem;
  border-color: color-mix(in srgb, var(--gb-orange) 28%, var(--gb-bg2));
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--gb-orange) 10%, transparent), transparent 42%),
    linear-gradient(180deg, color-mix(in srgb, var(--gb-bg1) 72%, var(--gb-bg0)), var(--gb-bg0));
}
.mte-hero-copy h2 {
  margin: 1rem 0;
  font-size: clamp(1.7rem, 4vw, 3rem);
  max-width: 780px;
  color: var(--gb-orange);
}
.mte-hero-copy p:last-child,
.mte-principle-box p:last-child,
.mte-panel p:last-child,
.mte-callout p:last-child,
.mte-copy-box p:last-child,
.mte-marketing-block p:last-child {
  margin-bottom: 0;
}
.mte-principle-box {
  padding: 1.25rem;
  border-color: color-mix(in srgb, var(--gb-yellow) 45%, var(--gb-bg2));
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--gb-yellow) 12%, var(--gb-bg1)), var(--gb-bg0));
}
.mte-principle-box h3 {
  margin-bottom: 1rem;
  font-size: 1rem;
  color: var(--gb-yellow);
}
.mte-question-grid,
.mte-equation-grid,
.mte-split,
.mte-process,
.mte-compare {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}
.mte-question-grid {
  margin: 1.25rem 0;
}
.mte-question-card,
.mte-equation,
.mte-feature-card {
  background: color-mix(in srgb, var(--gb-blue) 7%, var(--gb-bg1));
  border: 1px solid var(--gb-bg2);
  border-radius: 8px;
  padding: 1rem;
}
.mte-question-card span,
.mte-equation span {
  display: block;
  color: var(--gb-aqua);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.mte-question-card strong {
  display: block;
  color: var(--gb-fg0);
  line-height: 1.35;
}
.mte-question-card-accent,
.mte-equation-strong {
  border-color: color-mix(in srgb, var(--gb-orange) 48%, var(--gb-bg2));
  background: color-mix(in srgb, var(--gb-orange) 12%, var(--gb-bg1));
}
.mte-check-list {
  display: grid;
  gap: 0.75rem;
  margin: 0 0 1rem;
  list-style: none;
}
.mte-check-list li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem;
  background: color-mix(in srgb, var(--gb-yellow) 9%, var(--gb-bg1));
  border: 1px solid color-mix(in srgb, var(--gb-yellow) 30%, var(--gb-bg2));
  border-radius: 6px;
}
.mte-check-list span { color: var(--gb-fg4); }
.mte-check-list strong { color: var(--gb-orange); }
.mte-section {
  margin-bottom: 3rem;
}
.mte-section > p {
  max-width: 900px;
}
.mte-panel,
.mte-analogy-card,
.mte-callout,
.mte-analogy-wide,
.mte-inspection {
  padding: 1.2rem;
}
.mte-panel {
  border-color: color-mix(in srgb, var(--gb-blue) 30%, var(--gb-bg2));
  background: color-mix(in srgb, var(--gb-blue) 6%, var(--gb-bg0));
}
.mte-panel-accent {
  border-color: color-mix(in srgb, var(--gb-green) 42%, var(--gb-bg2));
  background: color-mix(in srgb, var(--gb-green) 10%, var(--gb-bg0));
}
.mte-analogy-card {
  border-color: color-mix(in srgb, var(--gb-aqua) 42%, var(--gb-bg2));
  background: color-mix(in srgb, var(--gb-aqua) 7%, var(--gb-bg0));
}
.mte-analogy-card span {
  display: block;
  color: var(--gb-yellow);
  font-weight: 700;
  margin-bottom: 0.4rem;
}
.mte-analogy-card strong {
  display: block;
  color: var(--gb-fg0);
  font-size: 1.05rem;
  margin-bottom: 0.75rem;
}
.mte-equation code {
  display: block;
  white-space: normal;
  line-height: 1.6;
  color: var(--gb-green);
}
.mte-requirements,
.mte-definition-grid,
.mte-foundation-list,
.mte-file-strip,
.mte-feature-grid,
.mte-faq-grid {
  display: grid;
  gap: 0.75rem;
}
.mte-requirements {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin: 1.25rem 0;
}
.mte-requirements div,
.mte-foundation-list span,
.mte-file-strip div,
.mte-mini-triad span {
  padding: 0.75rem 0.9rem;
  background: color-mix(in srgb, var(--gb-purple) 7%, var(--gb-bg1));
  border: 1px solid color-mix(in srgb, var(--gb-purple) 24%, var(--gb-bg2));
  border-radius: 6px;
  color: var(--gb-fg2);
  font-size: 0.88rem;
}
.mte-callout {
  border-left: 4px solid var(--gb-yellow);
  margin-bottom: 1rem;
  background: color-mix(in srgb, var(--gb-yellow) 7%, var(--gb-bg0));
  border-color: color-mix(in srgb, var(--gb-yellow) 32%, var(--gb-bg2));
  border-left-color: var(--gb-yellow);
}
.mte-callout-danger {
  border-color: var(--gb-red);
  background: color-mix(in srgb, var(--gb-red) 9%, var(--gb-bg0));
}
.mte-danger-grid div {
  border-color: color-mix(in srgb, var(--gb-red) 32%, var(--gb-bg2));
  background: color-mix(in srgb, var(--gb-red) 8%, var(--gb-bg1));
}
.mte-terminal {
  margin: 1rem 0;
}
.mte-definition-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin: 1rem 0;
}
.mte-definition-grid div {
  padding: 1rem;
  background: color-mix(in srgb, var(--gb-aqua) 8%, var(--gb-bg1));
  border: 1px solid color-mix(in srgb, var(--gb-aqua) 30%, var(--gb-bg2));
  border-radius: 8px;
}
.mte-definition-grid strong,
.mte-feature-card h3 {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--gb-fg0);
}
.mte-definition-grid span {
  display: block;
  color: var(--gb-fg4);
  font-size: 0.88rem;
}
.mte-file-strip,
.mte-foundation-list {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  margin: 1rem 0;
}
.mte-file-strip div {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.mte-file-strip span {
  color: var(--gb-fg4);
  font-size: 0.78rem;
}
.mte-process-block,
.mte-compare > div {
  background: color-mix(in srgb, var(--gb-green) 5%, var(--gb-bg0));
  border: 1px solid color-mix(in srgb, var(--gb-green) 26%, var(--gb-bg2));
  border-radius: 8px;
  padding: 1.1rem;
}
.mte-process-block h3,
.mte-compare h3,
.mte-inspection h3 {
  margin-bottom: 0.75rem;
  font-size: 1rem;
  color: var(--gb-green);
}
.mte-process-block ul,
.mte-compare ul {
  margin-left: 1.1rem;
  color: var(--gb-fg3);
  font-size: 0.9rem;
}
.mte-flow {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.mte-flow span {
  position: relative;
  padding: 0.75rem 1rem;
  background: color-mix(in srgb, var(--gb-orange) 9%, var(--gb-bg1));
  border: 1px solid color-mix(in srgb, var(--gb-orange) 34%, var(--gb-bg2));
  border-radius: 6px;
  color: var(--gb-fg0);
  font-weight: 600;
  font-size: 0.86rem;
}
.mte-flow span:not(:last-child)::after {
  content: '→';
  color: var(--gb-orange);
  margin-left: 0.75rem;
}
.mte-core-statement,
.mte-final-block {
  padding: 1.5rem;
  margin-bottom: 3rem;
  border-color: color-mix(in srgb, var(--gb-orange) 48%, var(--gb-bg2));
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--gb-orange) 14%, transparent), transparent 46%),
    color-mix(in srgb, var(--gb-yellow) 6%, var(--gb-bg0));
}
.mte-core-statement h2,
.mte-final-block h2 {
  margin-bottom: 1rem;
}
.mte-copy-box,
.mte-marketing-block {
  padding: 1.25rem;
  max-width: 860px;
}
.mte-marketing-block {
  border-color: color-mix(in srgb, var(--gb-yellow) 46%, var(--gb-bg2));
  background: color-mix(in srgb, var(--gb-yellow) 8%, var(--gb-bg0));
}
.mte-mini-triad {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}
.mte-feature-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.mte-feature-card {
  min-height: 150px;
}
.mte-feature-card:nth-child(1) { border-color: color-mix(in srgb, var(--gb-green) 38%, var(--gb-bg2)); background: color-mix(in srgb, var(--gb-green) 8%, var(--gb-bg1)); }
.mte-feature-card:nth-child(2) { border-color: color-mix(in srgb, var(--gb-red) 36%, var(--gb-bg2)); background: color-mix(in srgb, var(--gb-red) 7%, var(--gb-bg1)); }
.mte-feature-card:nth-child(3) { border-color: color-mix(in srgb, var(--gb-blue) 38%, var(--gb-bg2)); background: color-mix(in srgb, var(--gb-blue) 9%, var(--gb-bg1)); }
.mte-feature-card:nth-child(4) { border-color: color-mix(in srgb, var(--gb-yellow) 40%, var(--gb-bg2)); background: color-mix(in srgb, var(--gb-yellow) 8%, var(--gb-bg1)); }
.mte-feature-card:nth-child(5) { border-color: color-mix(in srgb, var(--gb-aqua) 38%, var(--gb-bg2)); background: color-mix(in srgb, var(--gb-aqua) 8%, var(--gb-bg1)); }
.mte-feature-card:nth-child(6) { border-color: color-mix(in srgb, var(--gb-purple) 38%, var(--gb-bg2)); background: color-mix(in srgb, var(--gb-purple) 9%, var(--gb-bg1)); }
.mte-feature-card:nth-child(1) h3 { color: var(--gb-green); }
.mte-feature-card:nth-child(2) h3 { color: var(--gb-red); }
.mte-feature-card:nth-child(3) h3 { color: var(--gb-blue); }
.mte-feature-card:nth-child(4) h3 { color: var(--gb-yellow); }
.mte-feature-card:nth-child(5) h3 { color: var(--gb-aqua); }
.mte-feature-card:nth-child(6) h3 { color: var(--gb-purple); }
.mte-feature-card p {
  margin: 0;
  color: var(--gb-fg4);
}
.mte-faq-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
}
.mte-final-line {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 1rem 0;
}
.mte-final-line span {
  padding: 1rem;
  background: color-mix(in srgb, var(--gb-orange) 10%, var(--gb-bg1));
  border: 1px solid color-mix(in srgb, var(--gb-orange) 38%, var(--gb-bg2));
  border-radius: 6px;
  color: var(--gb-orange);
  font-weight: 800;
}
.mte-built {
  margin-bottom: 0;
  color: var(--gb-yellow);
  font-weight: 700;
}

@media (max-width: 900px) {
  .mte-hero,
  .mte-question-grid,
  .mte-equation-grid,
  .mte-split,
  .mte-process,
  .mte-compare,
  .mte-faq-grid,
  .mte-final-line {
    grid-template-columns: 1fr;
  }
  .mte-mini-triad {
    grid-template-columns: 1fr;
  }
}

/* Security architecture page */
.security-arch-page {
  padding-bottom: 4rem;
}
.security-arch-page .section-title {
  color: var(--gb-yellow);
}
.security-arch-page p {
  color: var(--gb-fg3);
}
.security-arch-page strong {
  color: var(--gb-fg0);
}
.security-arch-header .page-header-icon {
  background: color-mix(in srgb, var(--gb-green) 14%, var(--gb-bg0));
  border-color: color-mix(in srgb, var(--gb-green) 38%, var(--gb-bg2));
}
.security-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(280px, 0.9fr);
  gap: 1.5rem;
  margin-bottom: 3rem;
}
.security-hero-copy,
.security-principle-box,
.security-panel,
.security-callout,
.security-core-statement,
.security-final-block {
  background: var(--gb-bg0);
  border: 1px solid var(--gb-bg2);
  border-radius: 8px;
}
.security-hero-copy {
  padding: 1.5rem;
  border-color: color-mix(in srgb, var(--gb-green) 34%, var(--gb-bg2));
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--gb-green) 12%, transparent), transparent 44%),
    linear-gradient(180deg, color-mix(in srgb, var(--gb-bg1) 72%, var(--gb-bg0)), var(--gb-bg0));
}
.security-hero-copy h2 {
  margin: 1rem 0;
  color: var(--gb-green);
  font-size: clamp(1.7rem, 4vw, 2.8rem);
  max-width: 860px;
}
.security-principle-box {
  padding: 1.25rem;
  border-color: color-mix(in srgb, var(--gb-orange) 46%, var(--gb-bg2));
  background: color-mix(in srgb, var(--gb-orange) 9%, var(--gb-bg0));
}
.security-principle-box h3 {
  color: var(--gb-orange);
  margin-bottom: 1rem;
  font-size: 1rem;
}
.security-built {
  color: var(--gb-yellow) !important;
  font-weight: 700;
  margin-bottom: 0;
}
.security-hero-lines,
.security-compact-lines,
.security-final-line {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}
.security-compact-lines {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 1rem;
}
.security-hero-lines span,
.security-final-line span {
  padding: 1rem;
  background: color-mix(in srgb, var(--gb-yellow) 9%, var(--gb-bg1));
  border: 1px solid color-mix(in srgb, var(--gb-yellow) 35%, var(--gb-bg2));
  border-radius: 6px;
  color: var(--gb-yellow);
  font-weight: 800;
}
.security-section {
  margin-bottom: 3rem;
}
.security-section > p {
  max-width: 920px;
}
.security-split,
.security-equation-grid,
.security-compare {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}
.security-panel {
  padding: 1.2rem;
  border-color: color-mix(in srgb, var(--gb-blue) 30%, var(--gb-bg2));
  background: color-mix(in srgb, var(--gb-blue) 6%, var(--gb-bg0));
}
.security-panel h3 {
  color: var(--gb-blue);
  margin-bottom: 0.75rem;
  font-size: 1rem;
}
.security-panel ul,
.security-compare ul {
  margin-left: 1.1rem;
  color: var(--gb-fg3);
  font-size: 0.9rem;
}
.security-panel-accent {
  border-color: color-mix(in srgb, var(--gb-aqua) 40%, var(--gb-bg2));
  background: color-mix(in srgb, var(--gb-aqua) 8%, var(--gb-bg0));
}
.security-panel-accent h3 {
  color: var(--gb-aqua);
}
.security-chip-grid,
.security-layer-grid,
.security-feature-grid,
.security-faq-grid,
.security-philosophy {
  display: grid;
  gap: 0.75rem;
}
.security-chip-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin: 1.25rem 0;
}
.security-chip-grid span,
.security-philosophy span {
  padding: 0.75rem 0.9rem;
  background: color-mix(in srgb, var(--gb-purple) 7%, var(--gb-bg1));
  border: 1px solid color-mix(in srgb, var(--gb-purple) 25%, var(--gb-bg2));
  border-radius: 6px;
  color: var(--gb-fg2);
  font-size: 0.88rem;
}
.security-danger-grid span,
.security-never-grid span {
  background: color-mix(in srgb, var(--gb-red) 8%, var(--gb-bg1));
  border-color: color-mix(in srgb, var(--gb-red) 32%, var(--gb-bg2));
}
.security-callout {
  padding: 1.2rem;
  margin: 1rem 0;
  border-color: color-mix(in srgb, var(--gb-yellow) 34%, var(--gb-bg2));
  border-left: 4px solid var(--gb-yellow);
  background: color-mix(in srgb, var(--gb-yellow) 7%, var(--gb-bg0));
}
.security-callout p:last-child,
.security-panel p:last-child,
.security-principle-box p:last-child {
  margin-bottom: 0;
}
.security-callout-danger {
  border-color: color-mix(in srgb, var(--gb-red) 42%, var(--gb-bg2));
  border-left-color: var(--gb-red);
  background: color-mix(in srgb, var(--gb-red) 8%, var(--gb-bg0));
}
.security-layer-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  margin: 1.25rem 0;
}
.security-layer-grid div,
.security-equation-grid div,
.security-layer-list div,
.security-feature-card,
.security-compare > div {
  padding: 1rem;
  background: color-mix(in srgb, var(--gb-green) 6%, var(--gb-bg1));
  border: 1px solid color-mix(in srgb, var(--gb-green) 28%, var(--gb-bg2));
  border-radius: 8px;
}
.security-layer-grid strong,
.security-layer-list strong,
.security-feature-card h3,
.security-compare h3 {
  display: block;
  color: var(--gb-green);
  margin-bottom: 0.45rem;
}
.security-layer-grid span,
.security-layer-list span {
  display: block;
  color: var(--gb-fg4);
  font-size: 0.86rem;
}
.security-equation-grid div {
  background: color-mix(in srgb, var(--gb-orange) 8%, var(--gb-bg1));
  border-color: color-mix(in srgb, var(--gb-orange) 34%, var(--gb-bg2));
}
.security-equation-grid span {
  display: block;
  color: var(--gb-orange);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.security-equation-grid code {
  display: block;
  white-space: normal;
  line-height: 1.6;
  color: var(--gb-green);
}
.security-layer-list {
  display: grid;
  gap: 0.8rem;
}
.security-layer-list div:nth-child(2n) {
  border-color: color-mix(in srgb, var(--gb-aqua) 30%, var(--gb-bg2));
  background: color-mix(in srgb, var(--gb-aqua) 6%, var(--gb-bg1));
}
.security-layer-list div:nth-child(2n) strong {
  color: var(--gb-aqua);
}
.security-philosophy {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}
.security-compare > div {
  background: color-mix(in srgb, var(--gb-blue) 6%, var(--gb-bg0));
  border-color: color-mix(in srgb, var(--gb-blue) 28%, var(--gb-bg2));
}
.security-compare > div:nth-child(2) {
  background: color-mix(in srgb, var(--gb-green) 7%, var(--gb-bg0));
  border-color: color-mix(in srgb, var(--gb-green) 34%, var(--gb-bg2));
}
.security-compare h3 {
  color: var(--gb-blue);
}
.security-compare > div:nth-child(2) h3 {
  color: var(--gb-green);
}
.security-core-statement,
.security-final-block {
  padding: 1.5rem;
  margin-bottom: 3rem;
  border-color: color-mix(in srgb, var(--gb-orange) 45%, var(--gb-bg2));
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--gb-orange) 13%, transparent), transparent 45%),
    color-mix(in srgb, var(--gb-yellow) 5%, var(--gb-bg0));
}
.security-core-statement h2,
.security-final-block h2 {
  color: var(--gb-orange);
  margin-bottom: 1rem;
}
.security-feature-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.security-feature-card {
  min-height: 150px;
}
.security-feature-card p {
  margin: 0;
  color: var(--gb-fg4);
}
.security-feature-card:nth-child(1) { border-color: color-mix(in srgb, var(--gb-green) 38%, var(--gb-bg2)); background: color-mix(in srgb, var(--gb-green) 8%, var(--gb-bg1)); }
.security-feature-card:nth-child(2) { border-color: color-mix(in srgb, var(--gb-orange) 38%, var(--gb-bg2)); background: color-mix(in srgb, var(--gb-orange) 8%, var(--gb-bg1)); }
.security-feature-card:nth-child(3) { border-color: color-mix(in srgb, var(--gb-yellow) 40%, var(--gb-bg2)); background: color-mix(in srgb, var(--gb-yellow) 8%, var(--gb-bg1)); }
.security-feature-card:nth-child(4) { border-color: color-mix(in srgb, var(--gb-red) 36%, var(--gb-bg2)); background: color-mix(in srgb, var(--gb-red) 7%, var(--gb-bg1)); }
.security-feature-card:nth-child(5) { border-color: color-mix(in srgb, var(--gb-aqua) 38%, var(--gb-bg2)); background: color-mix(in srgb, var(--gb-aqua) 8%, var(--gb-bg1)); }
.security-feature-card:nth-child(6) { border-color: color-mix(in srgb, var(--gb-blue) 38%, var(--gb-bg2)); background: color-mix(in srgb, var(--gb-blue) 9%, var(--gb-bg1)); }
.security-feature-card:nth-child(7) { border-color: color-mix(in srgb, var(--gb-purple) 38%, var(--gb-bg2)); background: color-mix(in srgb, var(--gb-purple) 9%, var(--gb-bg1)); }
.security-feature-card:nth-child(8) { border-color: color-mix(in srgb, var(--gb-gray) 38%, var(--gb-bg2)); background: color-mix(in srgb, var(--gb-gray) 10%, var(--gb-bg1)); }
.security-feature-card:nth-child(1) h3 { color: var(--gb-green); }
.security-feature-card:nth-child(2) h3 { color: var(--gb-orange); }
.security-feature-card:nth-child(3) h3 { color: var(--gb-yellow); }
.security-feature-card:nth-child(4) h3 { color: var(--gb-red); }
.security-feature-card:nth-child(5) h3 { color: var(--gb-aqua); }
.security-feature-card:nth-child(6) h3 { color: var(--gb-blue); }
.security-feature-card:nth-child(7) h3 { color: var(--gb-purple); }
.security-feature-card:nth-child(8) h3 { color: var(--gb-gray); }
.security-faq-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
}
.security-final-line {
  margin: 1.2rem 0;
}

/* Back to top */
.back-to-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 120;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid color-mix(in srgb, var(--gb-orange) 45%, var(--gb-bg2));
  border-radius: 8px;
  background: color-mix(in srgb, var(--gb-orange) 16%, var(--gb-bg0-hard));
  color: var(--gb-orange);
  font-size: 1.35rem;
  font-weight: 800;
  line-height: 1;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 0.18s, transform 0.18s, background 0.18s, border-color 0.18s;
  box-shadow: 0 10px 28px rgba(0,0,0,0.35);
}
.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.back-to-top:hover {
  background: color-mix(in srgb, var(--gb-orange) 25%, var(--gb-bg0));
  border-color: var(--gb-orange);
}
.back-to-top:focus-visible {
  outline: 2px solid var(--gb-yellow);
  outline-offset: 3px;
}

@media (max-width: 900px) {
  .security-hero,
  .security-split,
  .security-equation-grid,
  .security-compare,
  .security-faq-grid,
  .security-hero-lines,
  .security-compact-lines,
  .security-final-line {
    grid-template-columns: 1fr;
  }
}