/* =====================================================
   LEXICON.STORE - AT Protocol Schema Registry
   Variation C: Full-width Rows Design
   ===================================================== */

:root {
  --bg-primary: #000;
  --bg-secondary: #0a0a0a;
  --bg-card: #111;
  --bg-hover: #1a1a1a;
  --border: #1a1a1a;
  --border-hover: #333;
  --text-primary: #ededed;
  --text-secondary: #a1a1a1;
  --text-tertiary: #666;
  --accent: #fff;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', Menlo, monospace;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
}

/* =====================================================
   NAVIGATION
   ===================================================== */

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg-primary);
  z-index: 100;
}

.nav-brand {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  text-decoration: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links a {
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.15s ease;
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-btn {
  padding: 6px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.nav-btn:hover {
  border-color: var(--border-hover);
}

/* =====================================================
   HERO SECTION
   ===================================================== */

.hero {
  text-align: center;
  padding: 80px 24px 48px;
}

.hero h1 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 16px;
  background: linear-gradient(to bottom, #fff 0%, #a1a1a1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 40px;
}

/* Search */
.search-wrapper {
  max-width: 560px;
  margin: 0 auto;
  position: relative;
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  pointer-events: none;
}

#search {
  width: 100%;
  padding: 14px 16px 14px 48px;
  font-size: 15px;
  font-family: var(--font-sans);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

#search:focus {
  outline: none;
  border-color: var(--border-hover);
  box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.03);
}

#search::placeholder {
  color: var(--text-tertiary);
}

.search-kbd {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 4px 8px;
  font-size: 12px;
  font-family: var(--font-sans);
  color: var(--text-tertiary);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  pointer-events: none;
}

.kbd-cmd::before {
  content: '\2318';
  margin-right: 2px;
}

/* Quick Links */
.quick-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.quick-link {
  font-size: 13px;
  color: var(--text-tertiary);
  text-decoration: none;
  transition: color 0.15s ease;
}

.quick-link:hover {
  color: var(--text-primary);
}

.quick-link-dot {
  width: 3px;
  height: 3px;
  background: var(--text-tertiary);
  border-radius: 50%;
}

/* Stats Bar */
.stats-bar {
  text-align: center;
  padding: 16px 24px;
  font-size: 14px;
  color: var(--text-tertiary);
  border-bottom: 1px solid var(--border);
}

.stats-bar span {
  color: var(--text-secondary);
  font-weight: 500;
}

/* =====================================================
   LIST SECTION
   ===================================================== */

.list-section {
  max-width: 800px;
  margin: 0 auto;
  padding: 32px 24px;
  min-height: 400px;
}

/* Domain Row - Variation C Style */
.domain-row {
  display: flex;
  align-items: center;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.15s ease;
}

.domain-row:hover {
  background: var(--bg-hover);
  margin-left: -16px;
  margin-right: -16px;
  padding-left: 16px;
  padding-right: 16px;
}

.domain-row:first-child {
  border-top: 1px solid var(--border);
}

.domain-name {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
  flex-shrink: 0;
}

.domain-line {
  flex: 1;
  height: 1px;
  background: var(--border);
  margin: 0 16px;
  background: repeating-linear-gradient(
    to right,
    var(--border) 0,
    var(--border) 4px,
    transparent 4px,
    transparent 8px
  );
}

.domain-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.domain-count {
  font-size: 13px;
  color: var(--text-secondary);
}

.domain-versions {
  font-size: 12px;
  color: var(--text-tertiary);
  text-decoration: none;
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

.domain-versions:hover {
  color: var(--text-secondary);
  border-color: var(--border-hover);
  background: var(--bg-card);
}

/* Show More Link */
.show-more {
  display: block;
  text-align: center;
  padding: 16px;
  margin-top: 16px;
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all 0.15s ease;
}

.show-more:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
  background: var(--bg-card);
}

/* Lexicon List (shown when searching) */
.nsid-list {
  list-style: none;
}

.nsid-item {
  padding: 12px 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
  border-bottom: 1px solid var(--border);
}

.nsid-item:first-child {
  border-top: 1px solid var(--border);
}

.nsid-item:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
  margin-left: -16px;
  margin-right: -16px;
  padding-left: 16px;
  padding-right: 16px;
}

/* Loading State */
.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  color: var(--text-tertiary);
}

.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--border);
  border-top-color: var(--text-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 16px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Empty State */
#empty-state {
  text-align: center;
  padding: 80px 24px;
  color: var(--text-tertiary);
}

.hidden {
  display: none !important;
}

/* =====================================================
   DETAIL PANEL - Half Width
   ===================================================== */

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 900;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.overlay.visible {
  opacity: 1;
}

.detail-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: 50%;
  height: 100vh;
  background: var(--bg-primary);
  border-left: 1px solid var(--border);
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.detail-panel.visible {
  transform: translateX(0);
}

.panel-header {
  padding: 24px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.panel-title-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.panel-header h2 {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  word-break: break-all;
  line-height: 1.4;
}

.panel-close {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
}

.panel-close:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.panel-description {
  margin-top: 12px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.panel-content {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
}

/* Panel Metadata */
.panel-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  margin-bottom: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
}

.meta-label {
  color: var(--text-tertiary);
}

.meta-value {
  color: var(--text-secondary);
  font-weight: 500;
}

/* Panel Links */
.panel-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.panel-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

.panel-link:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
  background: var(--bg-hover);
}

.panel-link-primary {
  background: var(--bg-hover);
  border-color: var(--border-hover);
}

.panel-link svg {
  flex-shrink: 0;
  color: var(--text-tertiary);
}

.panel-schema-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.schema-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
}

.copy-btn {
  padding: 6px 12px;
  font-size: 12px;
  font-family: var(--font-sans);
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
}

.copy-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.copy-btn.copied {
  color: #22c55e;
  border-color: #22c55e;
}

.panel-schema {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  overflow-x: auto;
  white-space: pre;
  color: var(--text-secondary);
}

/* JSON Syntax Highlighting */
.json-key { color: #7dd3fc; }
.json-string { color: #86efac; }
.json-number { color: #fda4af; }
.json-boolean { color: #fcd34d; }
.json-null { color: #666; }

/* =====================================================
   FOOTER
   ===================================================== */

footer {
  margin-top: auto;
  padding: 32px 24px;
  text-align: center;
  border-top: 1px solid var(--border);
}

.footer-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.footer-links a {
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.15s ease;
}

.footer-links a:hover {
  color: var(--text-primary);
}

.footer-dot {
  width: 3px;
  height: 3px;
  background: var(--text-tertiary);
  border-radius: 50%;
}

.footer-tagline {
  font-size: 13px;
  color: var(--text-tertiary);
}

/* =====================================================
   RESPONSIVE
   ===================================================== */

@media (max-width: 1024px) {
  .detail-panel {
    width: 70%;
  }
}

@media (max-width: 768px) {
  .hero {
    padding: 48px 16px 32px;
  }

  .hero h1 {
    font-size: 28px;
  }

  .hero-subtitle {
    font-size: 16px;
    margin-bottom: 32px;
  }

  .quick-links {
    flex-direction: column;
    gap: 12px;
  }

  .quick-link-dot {
    display: none;
  }

  .list-section {
    padding: 24px 16px;
  }

  .detail-panel {
    width: 100%;
  }

  nav {
    padding: 12px 16px;
  }

  footer {
    padding: 24px 16px;
  }

  .domain-row {
    flex-wrap: wrap;
  }

  .domain-line {
    display: none;
  }

  .domain-meta {
    width: 100%;
    margin-top: 8px;
  }
}

/* =====================================================
   SCROLLBAR
   ===================================================== */

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--border-hover);
}