/* ═══════════════════════════════════════════════════
   FREESIA DESIGN SYSTEM
   Clinical precision · biomedical refinement
   ═══════════════════════════════════════════════════ */

/* ─── Design Tokens ─── */
:root {
  --fr-bg:        #F7F6F3;
  --fr-bg-alt:    #EFEEE9;
  --fr-surface:   #FFFFFF;
  --fr-border:    #DDD9D0;
  --fr-border-lt: #ECEAE4;
  --fr-text:      #1A1A18;
  --fr-text-2:    #5A5850;
  --fr-text-3:    #8A8880;
  --fr-accent:    #0D7C6B;
  --fr-accent-dk: #065E51;
  --fr-accent-lt: #E4F5F1;
  --fr-accent-2:  #1DA88E;
  --fr-danger:    #C5372E;
  --fr-code-bg:   #1E2A2E;
  --fr-code-text: #D4E6E2;

  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body:    'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:    'SF Mono', 'Fira Code', 'Consolas', monospace;
  --radius:       8px;
  --radius-lg:    14px;
  --shadow-sm:    0 1px 3px rgba(26,26,24,0.04), 0 1px 2px rgba(26,26,24,0.02);
  --shadow-md:    0 4px 16px rgba(26,26,24,0.06), 0 1px 4px rgba(26,26,24,0.04);
  --shadow-lg:    0 12px 40px rgba(26,26,24,0.08), 0 4px 12px rgba(26,26,24,0.04);
  --max-w:        1140px;
}

/* ─── Reset ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-body);
  background: var(--fr-bg);
  color: var(--fr-text);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}

/* ─── Utilities ─── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 28px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }


/* ═══════════════════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════════════════ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(247,246,243,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--fr-border-lt);
  transition: box-shadow 0.3s;
}
.nav.scrolled { box-shadow: var(--shadow-sm); }

.nav-inner {
  max-width: var(--max-w); margin: 0 auto; padding: 0 28px;
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.75rem;
  color: var(--fr-text);
  text-decoration: none;
  letter-spacing: -0.01em;
  display: flex; align-items: center; gap: 10px;
}
.nav-logo svg { width: 30px; height: 30px; }

.nav-links { display: flex; gap: 32px; align-items: center; }
.nav-links a {
  font-size: 0.875rem; font-weight: 500; color: var(--fr-text-2);
  text-decoration: none; transition: color 0.2s; letter-spacing: 0.01em;
}
.nav-links a:hover { color: var(--fr-accent); }

.nav-cta {
  background: var(--fr-accent) !important; color: #fff !important;
  padding: 8px 20px; border-radius: 6px; font-weight: 600 !important;
  transition: background 0.2s !important;
}
.nav-cta:hover { background: var(--fr-accent-dk) !important; }

/* Mobile nav */
.nav-toggle {
  display: none; background: none; border: none;
  cursor: pointer; padding: 4px;
}
.nav-toggle span {
  display: block; width: 22px; height: 2px;
  background: var(--fr-text); margin: 5px 0;
  transition: 0.3s; border-radius: 1px;
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: fixed; top: 64px; left: 0; right: 0;
    background: var(--fr-bg);
    flex-direction: column; padding: 20px 28px 28px; gap: 16px;
    border-bottom: 1px solid var(--fr-border);
    transform: translateY(-120%); transition: transform 0.3s; z-index: 99;
  }
  .nav-links.open { transform: translateY(0); }
}


/* ═══════════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════════ */
.hero {
  padding: 160px 0 100px;
  position: relative;
  overflow-x: hidden; 
  overflow-y: visible;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 75% 20%, rgba(13,124,107,0.05), transparent),
    radial-gradient(ellipse 40% 40% at 20% 80%, rgba(29,168,142,0.04), transparent);
  pointer-events: none;
}
.hero-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 60px; 
  align-items: flex-start;
}
.hero-text-block {
  padding-top: 50px;
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-text-block { padding-top: 0; }
}

.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--fr-accent-lt); color: var(--fr-accent-dk);
  font-size: 0.8rem; font-weight: 600; letter-spacing: 0.06em;
  text-transform: uppercase; padding: 6px 14px; border-radius: 20px;
  margin-bottom: 24px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.hero h1 em {
  color: var(--fr-accent);
  font-style: italic;
}

.hero p.lead {
  font-size: 1.1rem; color: var(--fr-text-2);
  line-height: 1.7; max-width: 480px;
  margin-bottom: 32px;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* Buttons (shared) */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 8px; font-weight: 600;
  font-size: 0.95rem; text-decoration: none; border: none; cursor: pointer;
  transition: all 0.2s; font-family: var(--font-body);
}
.btn-primary {
  background: var(--fr-accent); color: #fff;
  box-shadow: 0 2px 8px rgba(13,124,107,0.2);
}
.btn-primary:hover {
  background: var(--fr-accent-dk);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(13,124,107,0.25);
}
.btn-ghost {
  background: transparent; color: var(--fr-text);
  border: 1.5px solid var(--fr-border);
}
.btn-ghost:hover { border-color: var(--fr-accent); color: var(--fr-accent); }

/* Hero visual */
.hero-visual {
  position: relative;
  display: flex; flex-direction: column;
}

/* Gene header & Dropdown */
.gene-header {
  display: flex; align-items: center; gap: 8px;
  padding: 0 4px 8px; min-height: 28px;
}

.gene-select {
  font-family: var(--font-display); 
  font-size: 1.25rem;
  font-style: italic; 
  color: var(--fr-text);
  background: transparent url('data:image/svg+xml;utf8,<svg width="10" height="10" viewBox="0 0 24 24" fill="none" stroke="%238A8880" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round"><polyline points="6 9 12 15 18 9"/></svg>') no-repeat right 2px center;
  border: none;
  border-bottom: 1.5px dotted var(--fr-border);
  border-radius: 0;
  cursor: pointer;
  padding: 0 16px 0 0;
  outline: none;
  transition: color 0.2s, border-color 0.2s;
  -webkit-appearance: none; appearance: none;
}
.gene-select:hover {
  color: var(--fr-accent);
  border-bottom-color: var(--fr-accent);
}

.gene-desc {
  font-size: 0.72rem; color: var(--fr-text-3);
  flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.gene-tip-btn, .gene-nav-btn {
  background: none; border: none; cursor: pointer;
  color: var(--fr-text-3); padding: 2px;
  opacity: 0.5; transition: opacity 0.2s, color 0.2s;
}
.gene-tip-btn:hover, .gene-nav-btn:hover { opacity: 1; color: var(--fr-accent); }

/* Gene copy dropdown */
.gene-copy-wrap { position: relative; }
.gene-copy-btn {
  background: none; border: none; cursor: pointer;
  color: var(--fr-text-3); padding: 2px;
  opacity: 0.5; transition: opacity 0.2s, color 0.2s;
}
.gene-copy-btn:hover { opacity: 1; color: var(--fr-accent); }
.gene-copy-menu {
  display: none; position: absolute; top: 100%; left: -40px;
  background: var(--fr-surface); border: 1px solid var(--fr-border);
  border-radius: var(--radius); box-shadow: var(--shadow-md);
  z-index: 50; min-width: 160px; padding: 4px 0;
}
.gene-copy-menu.open { display: block; }
.gene-copy-menu button {
  display: block; width: 100%; text-align: left;
  background: none; border: none; cursor: pointer;
  padding: 7px 14px; font-size: 0.78rem; font-family: var(--font-body);
  color: var(--fr-text-2); transition: background 0.15s;
}
.gene-copy-menu button:hover {
  background: var(--fr-accent-lt); color: var(--fr-accent-dk);
}
.gene-copy-toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--fr-code-bg); color: var(--fr-code-text);
  padding: 8px 18px; border-radius: 6px; font-size: 0.82rem;
  box-shadow: var(--shadow-lg); z-index: 300;
  opacity: 0; transition: opacity 0.3s;
}
.gene-copy-toast.show { opacity: 1; }

/* Canvases */
.helix-canvases {
  display: flex; align-items: stretch;
  flex: 1; height: 340px; max-height: 340px;
}
.helix-canvas { flex: 1; height: 340px; min-width: 0; max-width: 320px; }
.aa-canvas {
  width: 72px; height: 340px;
  display: none;
}
.aa-canvas.visible { display: block; }
@media (max-width: 900px) {
  .hero-visual { display: none; }
}

/* Sequence position bar */
.seq-position {
  display: flex; align-items: center; gap: 8px;
  padding: 4px 4px 0; opacity: 0.45; transition: opacity 0.3s;
}
.seq-position:hover { opacity: 0.85; }
.seq-pos-label, .seq-pos-end {
  font-size: 0.65rem; color: var(--fr-text-3); white-space: nowrap;
  font-variant-numeric: tabular-nums;
  min-width: 24px;
}
.seq-pos-track-wrap {
  flex: 1; position: relative; display: flex; align-items: center;
}
.seq-pos-track-bg {
  position: absolute; left: 0; right: 0; height: 4px;
  border-radius: 2px; background: var(--fr-border-lt); 
  pointer-events: none;
}

/* Physical Codon Markers for the Slider */
.codon-marker {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 12px;
  border-radius: 2px;
  z-index: 2;
  pointer-events: none;
  box-shadow: 0 1px 2px rgba(0,0,0,0.2);
  border: 1px solid rgba(255,255,255,0.7);
}
.marker-start { background: #1565C0; }
.marker-stop { background: #C62828; }

.seq-pos-slider {
  width: 100%; height: 20px;
  -webkit-appearance: none; appearance: none;
  background: transparent; outline: none; cursor: pointer;
  position: relative; z-index: 3; margin: 0;
}
.seq-pos-slider::-webkit-slider-runnable-track { background: transparent; }
.seq-pos-slider::-moz-range-track { background: transparent; }

.seq-pos-slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--fr-accent); cursor: pointer;
  border: 2px solid var(--fr-surface);
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.seq-pos-slider::-moz-range-thumb {
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--fr-accent); cursor: pointer;
  border: 2px solid var(--fr-surface);
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.seq-pos-thumb-label {
  position: absolute; top: -18px; transform: translateX(-50%);
  font-size: 0.65rem; font-weight: 600; font-family: var(--font-mono);
  color: var(--fr-accent-dk); background: var(--fr-surface);
  padding: 1px 5px; border-radius: 4px;
  box-shadow: var(--shadow-sm); border: 1px solid var(--fr-border-lt);
  pointer-events: none; transition: left 0.1s linear;
  z-index: 4;
}

/* Animation settings toggle */
.helix-settings-toggle {
  background: none; border: none; cursor: pointer;
  font-family: var(--font-body); font-size: 0.72rem;
  color: var(--fr-text-3); font-weight: 500;
  display: flex; align-items: center; gap: 5px;
  padding: 6px 4px 2px; transition: color 0.2s;
  opacity: 0.5; margin-top: 4px;
}
.helix-settings-toggle:hover { opacity: 0.9; color: var(--fr-accent); }
.helix-settings-toggle svg { transition: transform 0.2s; }
.helix-settings-toggle.open svg { transform: rotate(90deg); }

/* Settings panel */
.helix-settings-panel {
  display: none; padding: 16px;
  background: var(--fr-surface); border: 1px solid var(--fr-border-lt);
  border-radius: var(--radius); margin-top: 12px;
  box-shadow: var(--shadow-sm);
}
.helix-settings-panel.visible { display: block; }

.helix-settings-layout {
  display: flex; gap: 24px;
}
.helix-controls { flex: 1; }
.helix-legend {
  flex: 0 0 120px;
  border-left: 1px solid var(--fr-border-lt);
  padding-left: 16px;
}

/* Controls inside panel */
.helix-setting-row {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 8px; opacity: 0.7;
  transition: opacity 0.2s;
}
.helix-setting-row:last-child { margin-bottom: 0; }
.helix-setting-row:hover { opacity: 1; }

.helix-ctrl-label {
  font-size: 0.68rem; font-weight: 500; color: var(--fr-text-3);
  white-space: nowrap; letter-spacing: 0.02em;
  min-width: 58px;
}
.helix-slider {
  flex: 0 1 100px; height: 3px;
  -webkit-appearance: none; appearance: none;
  background: var(--fr-border); border-radius: 2px; outline: none;
  cursor: pointer;
}
.helix-slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--fr-accent); cursor: pointer;
  border: 2px solid var(--fr-surface);
  box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}
.helix-slider::-moz-range-thumb {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--fr-accent); cursor: pointer;
  border: 2px solid var(--fr-surface);
}
.helix-slider-val {
  font-size: 0.65rem; color: var(--fr-text-3);
  white-space: nowrap; min-width: 28px;
}

/* AA toggle checkbox */
.helix-check-label {
  display: flex; align-items: center; gap: 5px; cursor: pointer;
}
.helix-check-label input[type=checkbox] {
  position: absolute; opacity: 0; width: 0; height: 0;
}
.helix-check-box {
  display: inline-block; width: 13px; height: 13px;
  border: 1.5px solid var(--fr-border); border-radius: 3px;
  background: var(--fr-surface); transition: all 0.2s;
  flex-shrink: 0; position: relative;
}
.helix-check-label input:checked ~ .helix-check-box {
  background: var(--fr-accent); border-color: var(--fr-accent);
}
.helix-check-label input:checked ~ .helix-check-box::after {
  content: ''; display: block;
  width: 4px; height: 7px;
  border: solid #fff; border-width: 0 1.5px 1.5px 0;
  transform: rotate(45deg);
  position: absolute; top: 0.5px; left: 3px;
}

/* Settings Legend */
.legend-title {
  font-size: 0.65rem; text-transform: uppercase;
  letter-spacing: 0.04em; color: var(--fr-text-3);
  margin-bottom: 8px; font-weight: 600;
}
.legend-item {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.7rem; color: var(--fr-text-2); margin-bottom: 5px;
}
.legend-color {
  width: 8px; height: 8px; border-radius: 2px; flex-shrink: 0;
}


/* ═══════════════════════════════════════════════════
   CAPABILITIES / SECTIONS
   ═══════════════════════════════════════════════════ */
.section { padding: 100px 0; }

.section-header {
  text-align: center; max-width: 600px; margin: 0 auto 56px;
}
.section-header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  letter-spacing: -0.02em; margin-bottom: 14px;
}
.section-header p { color: var(--fr-text-2); font-size: 1.05rem; }

.cap-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
@media (max-width: 900px) { .cap-grid { grid-template-columns: 1fr; } }

.cap-card {
  background: var(--fr-surface);
  border: 1px solid var(--fr-border-lt);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  transition: box-shadow 0.3s, border-color 0.3s;
}
.cap-card:hover { box-shadow: var(--shadow-md); border-color: var(--fr-border); }

.cap-icon {
  width: 44px; height: 44px; border-radius: 10px;
  background: var(--fr-accent-lt); color: var(--fr-accent);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.cap-card h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 10px; }
.cap-card p { font-size: 0.92rem; color: var(--fr-text-2); line-height: 1.65; }

/* Manifesto Quote specific styling */
.manifesto-quote {
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-style: italic;
  color: var(--fr-text);
  line-height: 1.45;
  letter-spacing: -0.01em;
}

/* ═══════════════════════════════════════════════════
   BLAST TOOL
   ═══════════════════════════════════════════════════ */
.tool-section {
  padding: 100px 0;
  background: var(--fr-bg-alt);
  border-top: 1px solid var(--fr-border-lt);
  border-bottom: 1px solid var(--fr-border-lt);
}
.tool-header {
  max-width: 680px; margin: 0 auto 48px; text-align: center;
}
.tool-header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  letter-spacing: -0.02em; margin-bottom: 12px;
}
.freesia-brand-text {
  color: var(--fr-accent-dk);
}
.tool-header p { color: var(--fr-text-2); font-size: 1.02rem; }

.tool-card {
  background: var(--fr-surface);
  border: 1px solid var(--fr-border-lt);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  max-width: 960px; margin: 0 auto;
  overflow: hidden;
}

.tool-bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--fr-border-lt);
  background: var(--fr-bg);
  flex-wrap: wrap; gap: 10px;
}
.tool-bar-title {
  font-weight: 600; font-size: 0.92rem;
  display: flex; align-items: center; gap: 8px;
}
.tool-bar-title svg { color: var(--fr-accent); width: 18px; height: 18px; }

.privacy-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--fr-accent-lt); color: var(--fr-accent-dk);
  font-size: 0.75rem; font-weight: 600; padding: 5px 12px;
  border-radius: 20px; letter-spacing: 0.02em;
}

.tool-body { padding: 28px 28px 32px; }

/* Input groups */
.input-group { margin-bottom: 20px; }
.input-group label {
  display: block; font-weight: 600; font-size: 0.88rem;
  margin-bottom: 8px; color: var(--fr-text);
}
.input-group label span.hint {
  font-weight: 400; color: var(--fr-text-3); margin-left: 6px;
}

.input-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
}
@media (max-width: 700px) { .input-row { grid-template-columns: 1fr; } }

textarea.blast-input {
  width: 100%; min-height: 120px; padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 0.84rem; line-height: 1.6;
  border: 1.5px solid var(--fr-border);
  border-radius: var(--radius); background: var(--fr-surface);
  color: var(--fr-text); resize: vertical;
  transition: border-color 0.2s, box-shadow 0.2s;
}
textarea.blast-input:focus {
  outline: none; border-color: var(--fr-accent);
  box-shadow: 0 0 0 3px rgba(13,124,107,0.08);
}
textarea.blast-input::placeholder { color: var(--fr-text-3); }

.file-upload-row {
  display: flex; align-items: center; gap: 10px; margin-top: 8px;
}
.file-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px; font-size: 0.82rem; font-weight: 500;
  border: 1.5px solid var(--fr-border); border-radius: 6px;
  background: var(--fr-bg); color: var(--fr-text-2);
  cursor: pointer; transition: all 0.2s; font-family: var(--font-body);
}
.file-btn:hover { border-color: var(--fr-accent); color: var(--fr-accent); }
.file-name { font-size: 0.82rem; color: var(--fr-text-3); }
input[type=file] { display: none; }

/* Config panel */
.config-toggle {
  background: none; border: none; cursor: pointer;
  font-family: var(--font-body); font-size: 0.85rem;
  color: var(--fr-text-2); font-weight: 500;
  display: flex; align-items: center; gap: 6px;
  margin-bottom: 16px; transition: color 0.2s;
}
.config-toggle:hover { color: var(--fr-accent); }
.config-toggle svg { transition: transform 0.2s; }
.config-toggle.open svg { transform: rotate(90deg); }

.config-panel {
  display: none; padding: 20px; margin-bottom: 20px;
  background: var(--fr-bg); border-radius: var(--radius);
  border: 1px solid var(--fr-border-lt);
}
.config-panel.visible { display: block; }

.config-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 14px;
}
.config-field label {
  display: block; font-size: 0.78rem; font-weight: 500;
  color: var(--fr-text-2); margin-bottom: 4px;
}
.config-field input {
  width: 100%; padding: 8px 10px; font-size: 0.85rem;
  border: 1.5px solid var(--fr-border); border-radius: 6px;
  background: var(--fr-surface); font-family: var(--font-body);
  transition: border-color 0.2s;
}
.config-field input:focus { outline: none; border-color: var(--fr-accent); }

/* Tooltip trigger button */
.tip-trigger {
  display: inline-flex; align-items: center; justify-content: center;
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--fr-border); color: var(--fr-text-2);
  border: none; cursor: pointer;
  font-size: 0.65rem; font-weight: 700; font-family: var(--font-body);
  margin-left: 4px; position: relative;
  transition: background 0.2s, color 0.2s;
  vertical-align: middle; line-height: 1;
}
.tip-trigger:hover {
  background: var(--fr-accent); color: #fff;
}

/* Tooltip popup */
.tooltip-popup {
  position: absolute;
  z-index: 200;
  background: var(--fr-code-bg);
  color: var(--fr-code-text);
  border-radius: var(--radius);
  padding: 14px 16px;
  font-size: 0.82rem;
  line-height: 1.65;
  max-width: 340px;
  width: max-content;
  box-shadow: var(--shadow-lg);
  pointer-events: auto;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.15s, transform 0.15s;
}
.tooltip-popup.visible {
  opacity: 1;
  transform: translateY(0);
}
.tooltip-popup p {
  margin: 0 0 8px;
}
.tooltip-popup p:last-child { margin-bottom: 0; }

/* Config panel link */
.config-link {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--fr-border-lt);
}
.config-link a {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.84rem; color: var(--fr-accent);
  text-decoration: none; font-weight: 500;
  transition: color 0.2s;
}
.config-link a:hover { color: var(--fr-accent-dk); text-decoration: underline; }

/* Warning message (non-error, informational) */
.warning-msg {
  color: #8B6914;
  background: #FFF8E6;
  border: 1px solid #F0E0A0;
  border-radius: var(--radius);
  padding: 10px 14px;
  font-size: 0.86rem;
  margin-top: 8px;
  line-height: 1.6;
}
.warning-msg a {
  color: var(--fr-accent); font-weight: 500;
}

/* RUO (Research Use Only) badge */
.ruo-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: #FEF3F2; color: var(--fr-danger);
  font-size: 0.75rem; font-weight: 600; padding: 5px 12px;
  border-radius: 20px; letter-spacing: 0.02em;
}

/* Consent gate */
.consent-gate {
  margin: 20px 0 8px;
  padding: 16px 18px;
  background: var(--fr-bg);
  border: 1.5px solid var(--fr-border);
  border-radius: var(--radius);
  transition: border-color 0.2s;
}
.consent-gate.checked { border-color: var(--fr-accent); background: var(--fr-accent-lt); }

.consent-label {
  display: flex; align-items: flex-start; gap: 12px;
  cursor: pointer; font-size: 0.86rem; line-height: 1.6;
  color: var(--fr-text-2);
}
.consent-label input[type=checkbox] {
  position: absolute; opacity: 0; width: 0; height: 0;
}
.consent-check-box {
  flex-shrink: 0; width: 20px; height: 20px;
  border: 2px solid var(--fr-border); border-radius: 4px;
  background: var(--fr-surface);
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s; margin-top: 2px;
}
.consent-label input:checked ~ .consent-check-box {
  background: var(--fr-accent); border-color: var(--fr-accent);
}
.consent-label input:checked ~ .consent-check-box::after {
  content: '';
  display: block; width: 6px; height: 10px;
  border: solid #fff; border-width: 0 2px 2px 0;
  transform: rotate(45deg); margin-top: -2px;
}
.consent-text { flex: 1; }
.consent-text strong { color: var(--fr-text); }
.consent-text a { color: var(--fr-accent); font-weight: 500; }

/* Actions */
.actions-row {
  display: flex; align-items: center; gap: 14px; margin-top: 8px;
}
.btn-run {
  background: var(--fr-accent); color: #fff;
  padding: 11px 32px; border-radius: 8px;
  font-weight: 600; font-size: 0.92rem; border: none;
  cursor: pointer; transition: all 0.2s; font-family: var(--font-body);
  display: inline-flex; align-items: center; gap: 8px;
}
.btn-run:hover:not(:disabled) {
  background: var(--fr-accent-dk); transform: translateY(-1px);
}
.btn-run:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-clear {
  background: none; border: 1.5px solid var(--fr-border);
  padding: 10px 22px; border-radius: 8px; font-weight: 500;
  font-size: 0.9rem; cursor: pointer; color: var(--fr-text-2);
  transition: all 0.2s; font-family: var(--font-body);
}
.btn-clear:hover { border-color: var(--fr-danger); color: var(--fr-danger); }

.run-status { font-size: 0.85rem; color: var(--fr-text-3); }

/* Results */
.results-area { margin-top: 28px; display: none; }
.results-area.visible { display: block; }

.results-summary {
  padding: 16px 20px; background: var(--fr-accent-lt);
  border-radius: var(--radius); margin-bottom: 20px;
  display: flex; align-items: center; gap: 12px;
}
.results-summary.no-hits { background: #FEF3F2; }

.results-summary-icon {
  width: 36px; height: 36px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(13,124,107,0.12); color: var(--fr-accent);
  flex-shrink: 0;
}
.results-summary.no-hits .results-summary-icon {
  background: rgba(197,55,46,0.1); color: var(--fr-danger);
}
.results-summary strong { font-weight: 600; }
.results-summary span { font-size: 0.92rem; color: var(--fr-text-2); }

.hit-card {
  background: var(--fr-surface);
  border: 1px solid var(--fr-border-lt);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
  transition: box-shadow 0.2s;
}
.hit-card:hover { box-shadow: var(--shadow-sm); }

.hit-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px; cursor: pointer; gap: 12px;
  border-bottom: 1px solid transparent;
  transition: background 0.15s;
}
.hit-header:hover { background: var(--fr-bg); }
.hit-header.expanded { border-bottom-color: var(--fr-border-lt); }

.hit-title { font-weight: 600; font-size: 0.9rem; }
.hit-meta {
  display: flex; gap: 16px; font-size: 0.82rem;
  color: var(--fr-text-2); flex-shrink: 0;
}
.hit-meta .val { font-weight: 600; color: var(--fr-text); }

.hit-chevron {
  transition: transform 0.2s; color: var(--fr-text-3); flex-shrink: 0;
}
.hit-header.expanded .hit-chevron { transform: rotate(180deg); }

.hit-body { display: none; padding: 18px; }
.hit-header.expanded + .hit-body { display: block; }

.hit-stats {
  display: flex; flex-wrap: wrap; gap: 20px; margin-bottom: 16px;
}
.hit-stat label {
  font-size: 0.74rem; text-transform: uppercase;
  letter-spacing: 0.04em; color: var(--fr-text-3); font-weight: 500;
}
.hit-stat .v { font-size: 0.95rem; font-weight: 600; color: var(--fr-text); }

.alignment-block {
  background: var(--fr-code-bg); color: var(--fr-code-text);
  padding: 18px 20px; border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.78rem; line-height: 1.7;
  overflow-x: auto; white-space: pre;
}

.privacy-note {
  max-width: 680px; margin: 28px auto 0; text-align: center;
  font-size: 0.84rem; color: var(--fr-text-3); line-height: 1.7;
}
.privacy-note strong { color: var(--fr-text-2); }


/* ═══════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════ */
.footer {
  padding: 48px 0 36px;
  border-top: 1px solid var(--fr-border-lt);
}
.footer-inner {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 16px;
}
.footer-brand {
  font-family: var(--font-display); 
  font-size: 1.5rem;
  display: flex; align-items: center; gap: 8px;
}
.footer-brand svg { width: 24px; height: 24px; }
.footer-copy { font-size: 0.82rem; color: var(--fr-text-3); }

.footer-links { display: flex; gap: 24px; }
.footer-links a {
  font-size: 0.82rem; color: var(--fr-text-3);
  text-decoration: none; transition: color 0.2s;
}
.footer-links a:hover { color: var(--fr-accent); }


/* ═══════════════════════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════════════════════ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-up { opacity: 0; animation: fadeUp 0.7s ease-out forwards; }
.fade-up-d1 { animation-delay: 0.1s; }
.fade-up-d2 { animation-delay: 0.22s; }
.fade-up-d3 { animation-delay: 0.34s; }

.spinner {
  display: inline-block; width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff; border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.error-msg { color: var(--fr-danger); font-size: 0.88rem; margin-top: 8px; }