:root {
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'DM Mono', monospace;
  --font-display: 'Playfair Display', serif;

  /* Theme: Light (Default) */
  --bg-base: #f8fafc;
  --bg-canvas: #f1f5f9;
  --text-main: #0f172a;
  --text-bright: #020617;
  --text-dim: #64748b;
  --card-bg: rgba(255, 255, 255, 0.85);
  --card-border: rgba(226, 232, 240, 0.8);
  --card-hover: rgba(255, 255, 255, 0.98);
  --glass-border: rgba(148, 163, 184, 0.2);
  --glass: rgba(255, 255, 255, 0.6);

  /* Accents */
  --cyan: #0284c7;
  --cyan-dim: rgba(2, 132, 199, 0.12);
  --mint: #059669;
  --mint-dim: rgba(5, 150, 105, 0.12);
  --amber: #d97706;
  --amber-dim: rgba(217, 119, 6, 0.12);
  --purple: #7c3aed;
  --purple-dim: rgba(124, 58, 237, 0.12);
  --red: #dc2626;
  --red-dim: rgba(220, 38, 38, 0.12);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 36px rgba(0, 0, 0, 0.12);
}

[data-theme="dark"] {
  --bg-base: #090d16;
  --bg-canvas: #040711;
  --text-main: #94a3b8;
  --text-bright: #f1f5f9;
  --text-dim: #64748b;
  --card-bg: rgba(15, 23, 42, 0.65);
  --card-border: rgba(255, 255, 255, 0.08);
  --card-hover: rgba(30, 41, 59, 0.85);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass: rgba(15, 23, 42, 0.4);

  --cyan: #38bdf8;
  --cyan-dim: rgba(56, 189, 248, 0.15);
  --mint: #34d399;
  --mint-dim: rgba(52, 211, 153, 0.15);
  --amber: #fbbf24;
  --amber-dim: rgba(251, 191, 36, 0.15);
  --purple: #c084fc;
  --purple-dim: rgba(192, 132, 252, 0.15);
  --red: #f87171;
  --red-dim: rgba(248, 113, 113, 0.15);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 16px 36px rgba(0, 0, 0, 0.6);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-base);
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.6;
  position: relative;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Dynamic ambient backgrounds */
.bg-canvas {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.25;
  animation: floatOrb 20s infinite ease-in-out alternate;
}

.orb1 { width: 500px; height: 500px; background: #0284c7; top: -100px; left: -100px; }
.orb2 { width: 450px; height: 450px; background: #7c3aed; bottom: 10%; right: -50px; animation-delay: -5s; }
.orb3 { width: 400px; height: 400px; background: #059669; top: 40%; left: 30%; animation-delay: -10s; }

@keyframes floatOrb {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(60px, 40px) scale(1.1); }
}

.grid-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image: linear-gradient(var(--glass-border) 1px, transparent 1px),
                    linear-gradient(90deg, var(--glass-border) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.3;
  z-index: 0;
  pointer-events: none;
}

.main {
  position: relative;
  z-index: 1;
  max-width: 1240px;
  margin: 0 auto;
  padding: 2rem 1.5rem 5rem;
}

/* Topbar */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.topbar-left {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  flex-wrap: wrap;
}

.ctrl-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1rem;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  color: var(--text-bright);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.ctrl-btn:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.ctrl-btn.highlight {
  background: linear-gradient(135deg, var(--cyan-dim), var(--purple-dim));
  border-color: var(--cyan);
  color: var(--text-bright);
  font-weight: 600;
}

.ctrl-btn.highlight:hover {
  background: var(--cyan);
  color: #fff;
}

.ctrl-btn svg {
  width: 16px;
  height: 16px;
}

/* Hero */
.hero {
  margin-bottom: 2.5rem;
}

.hero-org {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--cyan);
  background: var(--cyan-dim);
  border: 1px solid rgba(2, 132, 199, 0.2);
  padding: 0.35rem 0.9rem;
  border-radius: 100px;
  margin-bottom: 0.8rem;
}

.hero-unit {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
}

.hero h1 {
  font-size: 2.75rem;
  font-weight: 900;
  color: var(--text-bright);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 0.6rem;
}

.hero h1 .g {
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-sub {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--cyan);
  font-weight: 500;
  margin-bottom: 0.8rem;
}

.hero-desc {
  max-width: 820px;
  font-size: 1.05rem;
  color: var(--text-dim);
  margin-bottom: 2rem;
}

/* Stats Ribbon */
.stats-ribbon {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 1.2rem;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: var(--cyan);
}

.stat-num {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-bright);
  line-height: 1;
  margin-bottom: 0.35rem;
  background: linear-gradient(135deg, var(--text-bright), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-lbl {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-dim);
}

/* Search Panel */
.search-panel {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 1.5rem;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-md);
  margin-bottom: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 1.2rem;
  width: 20px;
  height: 20px;
  color: var(--text-dim);
  pointer-events: none;
}

.search-box input {
  width: 100%;
  padding: 0.95rem 3rem 0.95rem 3.2rem;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  color: var(--text-bright);
  font-family: var(--font-main);
  font-size: 1rem;
  outline: none;
  transition: all 0.25s ease;
}

.search-box input:focus {
  border-color: var(--cyan);
  background: var(--card-hover);
  box-shadow: 0 0 0 4px var(--cyan-dim);
}

.clear-btn {
  position: absolute;
  right: 1.2rem;
  background: none;
  border: none;
  font-size: 1rem;
  color: var(--text-dim);
  cursor: pointer;
}

.tab-pills {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 0.6rem 1.1rem;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.2s ease;
}

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

.tab-btn.active {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #fff;
  box-shadow: 0 4px 14px var(--cyan-dim);
}

.filter-chips {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  padding-top: 0.3rem;
  border-top: 1px solid var(--glass-border);
}

.chip {
  padding: 0.4rem 0.85rem;
  background: transparent;
  border: 1px solid var(--glass-border);
  border-radius: 100px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--text-dim);
  cursor: pointer;
  transition: all 0.2s ease;
}

.chip:hover {
  border-color: var(--purple);
  color: var(--purple);
}

.chip.active {
  background: var(--purple-dim);
  border-color: var(--purple);
  color: var(--purple);
  font-weight: 700;
}

/* Results Container & Grid */
.results-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 1.4rem;
}

/* Cards */
.doc-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  padding: 1.4rem;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1rem;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.doc-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, transparent, transparent);
  transition: background 0.3s ease;
}

.doc-card:hover {
  transform: translateY(-4px);
  border-color: var(--cyan);
  box-shadow: var(--shadow-md);
  background: var(--card-hover);
}

.doc-card:hover::before {
  background: linear-gradient(90deg, var(--cyan), var(--purple));
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.5rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  border-radius: 100px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-cyan { background: var(--cyan-dim); color: var(--cyan); border: 1px solid rgba(2, 132, 199, 0.25); }
.badge-mint { background: var(--mint-dim); color: var(--mint); border: 1px solid rgba(5, 150, 105, 0.25); }
.badge-amber { background: var(--amber-dim); color: var(--amber); border: 1px solid rgba(217, 119, 6, 0.25); }
.badge-purple { background: var(--purple-dim); color: var(--purple); border: 1px solid rgba(124, 58, 237, 0.25); }

.card-code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.03em;
  margin-bottom: 0.35rem;
}

.card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-bright);
  line-height: 1.35;
  margin-bottom: 0.5rem;
}

.card-snippet {
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 0.8rem;
  border-top: 1px solid var(--glass-border);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
}

.card-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  color: var(--cyan);
  font-weight: 600;
  text-decoration: none;
}

/* Empty State */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 4rem 2rem;
  background: var(--card-bg);
  border: 1px dashed var(--card-border);
  border-radius: 20px;
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.empty-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 0.5rem;
}

.empty-desc {
  font-size: 0.95rem;
  color: var(--text-dim);
}

/* Modal / Drawer */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  animation: fadeIn 0.2s ease;
}

.modal-overlay.active {
  display: flex;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 24px;
  width: 100%;
  max-width: 720px;
  max-height: 88vh;
  overflow-y: auto;
  padding: 2rem;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(24px);
  animation: slideUp 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

@keyframes slideUp {
  from { transform: translateY(30px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 1.2rem;
}

.modal-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-bright);
  line-height: 1.3;
  margin: 0.4rem 0 0.2rem;
}

.modal-code {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--cyan);
}

.close-modal-btn {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--text-dim);
  cursor: pointer;
  transition: all 0.2s ease;
}

.close-modal-btn:hover {
  background: var(--red-dim);
  border-color: var(--red);
  color: var(--red);
}

.modal-body {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  font-size: 0.92rem;
}

.param-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.8rem;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  padding: 1.2rem;
}

.param-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.param-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--text-dim);
}

.param-val {
  font-weight: 600;
  color: var(--text-bright);
  font-size: 0.85rem;
}

.detail-section {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.detail-heading {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--cyan);
  letter-spacing: 0.08em;
}

.detail-content {
  color: var(--text-main);
  line-height: 1.55;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  padding: 0.9rem;
  border-radius: 12px;
}

.forms-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.form-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.3rem 0.6rem;
  background: var(--purple-dim);
  border: 1px solid rgba(124, 58, 237, 0.2);
  color: var(--purple);
  border-radius: 6px;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.8rem;
  border-top: 1px solid var(--glass-border);
  padding-top: 1.2rem;
}

/* Footer */
.footer {
  margin-top: 5rem;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
  padding: 2rem;
  border-top: 1px solid var(--glass-border);
}

@media (max-width: 768px) {
  .hero h1 { font-size: 2rem; }
  .results-container { grid-template-columns: 1fr; }
  .modal-card { padding: 1.2rem; }
}