/* ===== DESIGN TOKENS ===== */
:root {
  /* Base */
  --bg-primary: #06060f;
  --bg-secondary: #0d0d1a;
  --bg-card: rgba(255,255,255,0.04);
  --bg-card-hover: rgba(255,255,255,0.08);
  --text-primary: #f0f0f5;
  --text-secondary: #8888a0;
  --text-muted: #555570;
  --border-color: rgba(255,255,255,0.06);
  --border-hover: rgba(255,255,255,0.12);

  /* Country Accent Colors */
  --color-US: #6366f1;
  --color-KR: #ef4444;
  --color-JP: #ec4899;
  --color-CN: #f59e0b;
  --color-EU: #14b8a6;
  --color-IN: #f97316;
  --color-CA: #dc2626;
  --color-AU: #10b981;
  --color-SA: #eab308;
  --color-BR: #22c55e;

  --accent: var(--color-US);

  /* Sizing */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* Transitions */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --duration: 0.3s;
}

/* ===== RESET & BASE ===== */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }

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

body {
  font-family: 'Inter', 'Noto Sans KR', -apple-system, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Subtle animated grain background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% -20%, rgba(99,102,241,0.08), transparent),
    radial-gradient(ellipse 60% 50% at 80% 100%, rgba(20,184,166,0.05), transparent);
  pointer-events: none;
  z-index: 0;
}

/* ===== HEADER ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6,6,15,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 24px;
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #818cf8);
  display: grid;
  place-items: center;
  font-size: 16px;
}

.header-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ===== COUNTRY TABS ===== */
.tabs-wrapper {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 65px;
  z-index: 99;
}

.tabs-scroll {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  gap: 4px;
  padding: 10px 24px;
  overflow-x: auto;
  scrollbar-width: none;
}

.tabs-scroll::-webkit-scrollbar { display: none; }

.tab-btn {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-xl);
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--duration) var(--ease);
  white-space: nowrap;
}

.tab-btn:hover {
  background: rgba(255,255,255,0.05);
  color: var(--text-primary);
}

.tab-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 0 20px rgba(99,102,241,0.3);
}

.tab-flag { font-size: 1.1rem; }

/* ===== CONTROLS BAR ===== */
.controls {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.search-box {
  flex: 1;
  min-width: 200px;
  position: relative;
}

.search-box input {
  width: 100%;
  padding: 10px 16px 10px 40px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.9rem;
  transition: border-color var(--duration) var(--ease);
  outline: none;
}

.search-box input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}

.search-box::before {
  content: '🔍';
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.85rem;
  pointer-events: none;
}

.filter-btn, .sort-btn {
  padding: 10px 18px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--duration) var(--ease);
}

.filter-btn:hover, .sort-btn:hover {
  border-color: var(--accent);
  color: var(--text-primary);
}

.filter-btn.active {
  background: rgba(99,102,241,0.15);
  border-color: var(--accent);
  color: var(--accent);
}

/* Filter dropdown */
.filter-dropdown {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
  display: none;
}

.filter-dropdown.open {
  display: block;
  animation: fadeSlideDown 0.3s var(--ease);
}

.filter-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 16px;
}

.filter-tag {
  padding: 6px 14px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all var(--duration) var(--ease);
}

.filter-tag:hover {
  border-color: var(--accent);
  color: var(--text-primary);
}

.filter-tag.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ===== COUNTRY SUMMARY ===== */
.country-summary {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px 16px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.summary-stat {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  min-width: 150px;
}

.summary-stat .label {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.summary-stat .value {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent);
}

/* ===== CARD GRID ===== */
.grid-wrapper {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px 40px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 16px;
}

/* ===== COMPANY CARD ===== */
.company-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 22px;
  cursor: pointer;
  transition: all var(--duration) var(--ease);
  overflow: hidden;
  animation: fadeIn 0.4s var(--ease) both;
}

.company-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0;
  transition: opacity var(--duration) var(--ease);
}

.company-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3), 0 0 30px rgba(99,102,241,0.08);
}

.company-card:hover::before { opacity: 1; }

.card-header {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 14px;
}

.card-rank {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), rgba(99,102,241,0.3));
  display: grid;
  place-items: center;
  font-size: 0.85rem;
  font-weight: 700;
  flex-shrink: 0;
}

.card-rank.top3 {
  background: linear-gradient(135deg, var(--accent), #a78bfa);
  box-shadow: 0 0 16px rgba(99,102,241,0.3);
}

.card-info { flex: 1; min-width: 0; }

.card-name {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-name-ko {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.card-cap {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.card-sector {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-xl);
  background: rgba(255,255,255,0.05);
  font-size: 0.72rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.card-techs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tech-tag {
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: rgba(99,102,241,0.1);
  border: 1px solid rgba(99,102,241,0.15);
  font-size: 0.7rem;
  color: var(--accent);
  transition: all var(--duration) var(--ease);
}

.company-card:hover .tech-tag {
  background: rgba(99,102,241,0.15);
}

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease);
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  max-width: 640px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  transform: translateY(30px) scale(0.96);
  transition: transform 0.35s var(--ease);
}

.modal-overlay.open .modal {
  transform: translateY(0) scale(1);
}

.modal-header {
  padding: 24px 24px 0;
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.modal-rank {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), rgba(99,102,241,0.3));
  display: grid;
  place-items: center;
  font-size: 1.1rem;
  font-weight: 800;
  flex-shrink: 0;
}

.modal-title-group { flex: 1; }

.modal-name {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.modal-subtitle {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

.modal-close {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-secondary);
  font-size: 1.1rem;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all var(--duration) var(--ease);
}

.modal-close:hover {
  background: rgba(255,255,255,0.1);
  color: var(--text-primary);
}

.modal-meta {
  padding: 16px 24px;
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border-color);
}

.modal-meta-item {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.modal-meta-item strong {
  color: var(--text-primary);
  font-weight: 600;
}

.modal-section {
  padding: 20px 24px;
}

.modal-section-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 14px;
}

.tech-detail-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 10px;
  transition: border-color var(--duration) var(--ease);
}

.tech-detail-card:hover {
  border-color: var(--accent);
}

.tech-detail-name {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.tech-detail-category {
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  background: rgba(99,102,241,0.12);
  color: var(--accent);
}

.tech-detail-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.modal-tags {
  padding: 0 24px 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.modal-tag {
  padding: 5px 12px;
  border-radius: var(--radius-sm);
  background: rgba(99,102,241,0.1);
  border: 1px solid rgba(99,102,241,0.15);
  font-size: 0.78rem;
  color: var(--accent);
}

/* ===== STATS SECTION ===== */
.stats-section {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px 24px 60px;
}

.stats-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
}

.stat-card-title {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 14px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stat-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.stat-bar-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  min-width: 80px;
}

.stat-bar-track {
  flex: 1;
  height: 8px;
  border-radius: 4px;
  background: rgba(255,255,255,0.05);
  overflow: hidden;
}

.stat-bar-fill {
  height: 100%;
  border-radius: 4px;
  background: var(--accent);
  transition: width 0.8s var(--ease);
}

.stat-bar-value {
  font-size: 0.75rem;
  color: var(--text-muted);
  min-width: 30px;
  text-align: right;
}

/* ===== NO RESULTS ===== */
.no-results {
  text-align: center;
  padding: 80px 24px;
  color: var(--text-muted);
}

.no-results-icon { font-size: 3rem; margin-bottom: 12px; }
.no-results-text { font-size: 1rem; }

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeSlideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Stagger cards */
.company-card:nth-child(1) { animation-delay: 0.02s; }
.company-card:nth-child(2) { animation-delay: 0.04s; }
.company-card:nth-child(3) { animation-delay: 0.06s; }
.company-card:nth-child(4) { animation-delay: 0.08s; }
.company-card:nth-child(5) { animation-delay: 0.10s; }
.company-card:nth-child(6) { animation-delay: 0.12s; }
.company-card:nth-child(7) { animation-delay: 0.14s; }
.company-card:nth-child(8) { animation-delay: 0.16s; }
.company-card:nth-child(9) { animation-delay: 0.18s; }
.company-card:nth-child(10) { animation-delay: 0.20s; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .header-inner { flex-direction: column; align-items: flex-start; gap: 8px; }
  .card-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .controls { flex-direction: column; }
  .search-box { min-width: 100%; }
  .modal { max-height: 90vh; margin: 12px; }
}

@media (max-width: 480px) {
  .header { padding: 12px 16px; }
  .tabs-scroll { padding: 8px 16px; }
  .controls { padding: 14px 16px; }
  .grid-wrapper { padding: 0 16px 24px; }
  .company-card { padding: 16px; }
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }