/* Components — Nav, Cards, Buttons, Code, Tables, Modals */

/* ===== NAVIGATION ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: background var(--transition-normal), box-shadow var(--transition-normal);
  background: rgba(10, 22, 40, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.nav.scrolled {
  background: rgba(10, 22, 40, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.04);
}
.nav-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.nav-logo span { color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
}
.nav-links a {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  opacity: 1;
}
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
}

/* Domain dropdown */
.nav-dropdown {
  position: relative;
}
.nav-dropdown-toggle {
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: color var(--transition-fast);
}
.nav-dropdown-toggle:hover { color: var(--text-primary); }
.nav-dropdown-toggle::after {
  content: '';
  border: 3px solid transparent;
  border-top-color: currentColor;
  margin-top: 2px;
  opacity: 0.5;
}
.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding-top: 8px;
  min-width: 180px;
}
.nav-dropdown-menu-inner {
  background: rgba(15, 31, 58, 0.95);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-sm) 0;
  box-shadow: var(--shadow-card);
}
.nav-dropdown:hover .nav-dropdown-menu {
  display: block;
}
.nav-dropdown-menu-inner a {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-sm);
  white-space: nowrap;
}
.nav-dropdown-menu-inner a:hover {
  background: var(--bg-hover);
}
.domain-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

/* Mobile menu */
.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  margin: 5px 0;
  transition: var(--transition-fast);
}
.nav-hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.nav-mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 22, 40, 0.98);
  backdrop-filter: blur(12px);
  z-index: 999;
  padding: var(--space-xl);
}
.nav-mobile.open { display: flex; flex-direction: column; gap: var(--space-md); overflow-y: auto; }
.nav-mobile a {
  color: var(--text-secondary);
  font-size: var(--font-size-lg);
  font-weight: 500;
  padding: var(--space-sm) 0;
}
.nav-mobile a:hover { color: var(--text-primary); }
.nav-mobile-label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-muted);
  padding: var(--space-md) 0 var(--space-xs);
}
.nav-mobile-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}
.nav-mobile-indent {
  padding-left: var(--space-md) !important;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-secondary);
  font-size: var(--font-size-base);
  font-weight: 500;
  padding: var(--space-xs) 0 var(--space-xs) var(--space-md);
}
.nav-mobile-indent:hover { color: var(--text-primary); }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-hamburger { display: block; }
}

/* ===== CARDS ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-xl) var(--space-2xl);
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}
.card:hover {
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.15);
}
.card-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}
@media (max-width: 600px) {
  .card-split { grid-template-columns: 1fr; }
}

/* Domain border-top colors */
.border-physics { border-top: 3px solid var(--color-physics); }
.border-chemistry { border-top: 3px solid var(--color-chemistry); }
.border-medical { border-top: 3px solid var(--color-medical); }
.border-neuro { border-top: 3px solid var(--color-neuro); }
.border-consciousness { border-top: 3px solid var(--color-consciousness); }
.border-radar { border-top: 3px solid var(--color-radar); }
.border-materials { border-top: 3px solid var(--color-materials); }
.border-climate { border-top: 3px solid var(--color-climate); }
.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: var(--space-md);
}
.card h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-sm);
}
.card p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}
.card-metric {
  display: inline-block;
  margin-top: var(--space-md);
  padding: 3px 10px;
  background: var(--accent-dim);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--accent);
  font-family: var(--font-mono);
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: var(--space-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--accent);
}
.card-link::after {
  content: '\2192';
}

/* Domain card (homepage) */
.domain-card {
  border-top: 2px solid var(--accent);
}
.domain-card[data-color="chemistry"] { border-top-color: var(--color-chemistry); }
.domain-card[data-color="chemistry"] .card-icon { background: rgba(56, 217, 169, 0.15); }
.domain-card[data-color="chemistry"] .card-metric { background: rgba(56, 217, 169, 0.15); color: var(--color-chemistry); }
.domain-card[data-color="chemistry"] .card-link { color: var(--color-chemistry); }

.domain-card[data-color="medical"] { border-top-color: var(--color-medical); }
.domain-card[data-color="medical"] .card-icon { background: rgba(245, 158, 11, 0.15); }
.domain-card[data-color="medical"] .card-metric { background: rgba(245, 158, 11, 0.15); color: var(--color-medical); }
.domain-card[data-color="medical"] .card-link { color: var(--color-medical); }

.domain-card[data-color="neuro"] { border-top-color: var(--color-neuro); }
.domain-card[data-color="neuro"] .card-icon { background: rgba(167, 139, 250, 0.15); }
.domain-card[data-color="neuro"] .card-metric { background: rgba(167, 139, 250, 0.15); color: var(--color-neuro); }
.domain-card[data-color="neuro"] .card-link { color: var(--color-neuro); }

.domain-card[data-color="consciousness"] { border-top-color: var(--color-consciousness); }
.domain-card[data-color="consciousness"] .card-icon { background: rgba(99, 102, 241, 0.15); }
.domain-card[data-color="consciousness"] .card-metric { background: rgba(99, 102, 241, 0.15); color: var(--color-consciousness); }
.domain-card[data-color="consciousness"] .card-link { color: var(--color-consciousness); }

/* Paper card */
.paper-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}
.paper-number {
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.paper-card h3 { font-size: var(--font-size-lg); }
.paper-card p {
  font-size: var(--font-size-sm);
  flex: 1;
}
.paper-actions {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 12px 28px;
  border-radius: 6px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
  text-decoration: none;
  letter-spacing: 0.01em;
}
.btn-primary {
  background: var(--accent);
  color: #0a1628;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}
.btn-primary:hover {
  opacity: 0.9;
  box-shadow: 0 2px 8px rgba(0, 180, 216, 0.25);
  transform: translateY(-1px);
}
.btn-secondary {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.1);
}
.btn-secondary:hover {
  background: var(--bg-hover);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}
.btn-sm {
  padding: 6px 14px;
  font-size: var(--font-size-xs);
}
.btn-ghost {
  background: transparent;
  color: var(--accent);
  padding: 6px 12px;
}
.btn-ghost:hover { background: var(--accent-dim); }

/* ===== STATS BAR ===== */
.stats-bar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-xl);
  padding: var(--space-2xl) 0;
}
.stat {
  text-align: center;
}
.stat-value {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--text-primary);
  font-family: var(--font-mono);
}
.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-top: 2px;
}

/* ===== TABLES ===== */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}
thead {
  background: var(--bg-secondary);
}
th {
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}
td {
  padding: 10px 16px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
}
tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(255,255,255,0.02); }
.table-accent { color: var(--accent); font-weight: 600; font-family: var(--font-mono); }

/* ===== CODE BLOCKS ===== */
.code-block {
  position: relative;
}
.code-block-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid var(--border-color);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}
.code-block pre {
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  border-top: none;
  margin: 0;
}
.copy-btn {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  font-size: var(--font-size-xs);
  font-family: var(--font-sans);
  transition: var(--transition-fast);
}
.copy-btn:hover { color: var(--text-primary); border-color: var(--text-muted); }
.copy-btn.copied { color: var(--color-success); border-color: var(--color-success); }

/* Syntax highlighting */
.kw { color: #c792ea; }
.fn { color: #82aaff; }
.str { color: #c3e88d; }
.num { color: #f78c6c; }
.op { color: #89ddff; }
.cm { color: #546e7a; font-style: italic; }
.ty { color: #ffcb6b; }

/* ===== TERMINAL ===== */
.terminal {
  background: var(--bg-code);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
}
.terminal-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid var(--border-color);
}
.terminal-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}
.terminal-dot:nth-child(1) { background: rgba(255, 95, 87, 0.5); }
.terminal-dot:nth-child(2) { background: rgba(254, 188, 46, 0.5); }
.terminal-dot:nth-child(3) { background: rgba(40, 200, 64, 0.5); }
.terminal-body {
  padding: var(--space-md);
  min-height: 200px;
  line-height: 1.8;
}
.terminal-line { margin-bottom: 4px; }
.terminal-prompt { color: var(--color-success); }
.terminal-cursor {
  display: inline-block;
  width: 8px;
  height: 16px;
  background: var(--color-success);
  animation: blink 1s step-end infinite;
  vertical-align: text-bottom;
}
@keyframes blink { 50% { opacity: 0; } }

/* ===== API PLAYGROUND ===== */
.playground {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.playground-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  background: rgba(255,255,255,0.02);
  border-bottom: 1px solid var(--border-color);
}
.playground-method {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  font-weight: 700;
  padding: 4px 8px;
  border-radius: 4px;
  background: var(--accent-dim);
  color: var(--accent);
}
.playground-url {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-left: var(--space-sm);
}
.playground-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}
.toggle-switch {
  position: relative;
  width: 36px;
  height: 20px;
  background: var(--bg-hover);
  border-radius: 10px;
  cursor: pointer;
  transition: var(--transition-fast);
}
.toggle-switch.active { background: var(--accent); }
.toggle-switch::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  background: white;
  border-radius: 50%;
  transition: var(--transition-fast);
}
.toggle-switch.active::after { left: 18px; }

.playground-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 200px;
}
.playground-request,
.playground-response {
  padding: var(--space-md);
}
.playground-request {
  border-right: 1px solid var(--border-color);
}
.playground-label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: var(--space-sm);
}

.playground-editor {
  width: 100%;
  min-height: 120px;
  background: var(--bg-code, rgba(0,0,0,0.3));
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  line-height: 1.5;
  resize: none;
  overflow: hidden;
  tab-size: 2;
}
.playground-editor:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(0, 180, 216, 0.15);
}
.playground-run {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: 6px 16px;
  border: none;
  border-radius: 4px;
  background: var(--accent);
  color: white;
  cursor: pointer;
  transition: var(--transition-fast);
}
.playground-run:hover { opacity: 0.85; }
.playground-run:disabled { opacity: 0.5; cursor: wait; }
.playground-copy {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  padding: 6px 12px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-fast);
}
.playground-copy:hover { border-color: var(--accent); color: var(--accent); }

@media (max-width: 600px) {
  .playground-body { grid-template-columns: 1fr; }
  .playground-request { border-right: none; border-bottom: 1px solid var(--border-color); }
}

/* ===== HIGHLIGHT BOX ===== */
.highlight-box {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
}
.highlight-box h3 {
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

/* ===== BADGE ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 600;
}
.badge-success {
  background: rgba(56, 217, 169, 0.15);
  color: var(--color-success);
}
.badge-warning {
  background: rgba(245, 158, 11, 0.15);
  color: var(--color-warning);
}
.badge-info {
  background: var(--accent-dim);
  color: var(--accent);
}

/* ===== MODAL ===== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 2000;
  align-items: center;
  justify-content: center;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  max-width: 600px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
}
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
}
.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 24px;
  cursor: pointer;
  padding: 4px;
}
.modal-close:hover { color: var(--text-primary); }

/* ===== FADE IN ANIMATION ===== */
.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s cubic-bezier(0.25, 0.1, 0.25, 1), transform 0.6s cubic-bezier(0.25, 0.1, 0.25, 1);
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== FEATURED RESULTS ===== */
.featured-results {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}
.featured-result {
  text-align: center;
  padding: var(--space-2xl) var(--space-xl);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}
.featured-result:hover {
  border-color: var(--border-accent);
  box-shadow: 0 0 30px var(--accent-glow);
}
.featured-value {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--accent);
  line-height: 1;
}
.featured-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-top: var(--space-sm);
}
.featured-source {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin-top: 4px;
}

@media (max-width: 600px) {
  .featured-results { grid-template-columns: 1fr; }
}

/* ===== FOOTER ===== */
.footer {
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding: var(--space-4xl) 0 var(--space-2xl);
  background: var(--bg-primary);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}
.footer-brand p {
  font-size: var(--font-size-sm);
  margin-top: var(--space-sm);
}
.footer-heading {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}
.footer-links a {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}
.footer-links a:hover { color: var(--text-secondary); }
.footer-bottom {
  text-align: center;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-color);
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* ===== VIZ CONTAINER ===== */
.viz-container {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  overflow: hidden;
}
.viz-container svg,
.viz-container canvas {
  width: 100%;
  display: block;
}