:root {
  --bg: #0a0c10;
  --surface: #13161f;
  --surface-light: #1b1f2b;
  --text: #e3e6ef;
  --text-secondary: #8b90a5;
  --accent: #4e7cff;
  --accent-glow: rgba(78, 124, 255, 0.3);
  --border: rgba(255, 255, 255, 0.06);
  --radius: 16px;
  --radius-sm: 12px;
  --transition: 0.25s cubic-bezier(0.2, 0, 0, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  background-image: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(78, 124, 255, 0.12), transparent);
  background-repeat: no-repeat;
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== HEADER / HERO ===== */
.hero {
  padding: 60px 0 40px;
  text-align: center;
  position: relative;
}

.hero-top {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.badge {
  background: var(--surface-light);
  border: 1px solid var(--border);
  padding: 6px 18px;
  border-radius: 30px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.3px;
  backdrop-filter: blur(8px);
}

.language-selector {
  display: flex;
  gap: 4px;
  background: var(--surface);
  padding: 4px;
  border-radius: 30px;
  border: 1px solid var(--border);
}

.lang-btn {
  padding: 6px 16px;
  border-radius: 24px;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--text-secondary);
  transition: var(--transition);
}

.lang-btn.active {
  background: var(--accent);
  color: white;
}

.lang-btn:not(.active):hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.hero h1 {
  font-size: clamp(2.4rem, 7vw, 4rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.hero h1 span {
  background: linear-gradient(135deg, #4e7cff, #7ab4ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 36px;
  font-weight: 400;
}

/* ===== CHAT PIPE ===== */
.chat-pipe {
  display: flex;
  max-width: 560px;
  margin: 0 auto;
  border-radius: 60px;
  background: var(--surface-light);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition);
  backdrop-filter: blur(8px);
}

.chat-pipe:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

.chat-pipe input {
  flex: 1;
  background: transparent;
  border: none;
  padding: 16px 24px;
  font-size: 1rem;
  color: var(--text);
  outline: none;
  font-family: inherit;
}

.chat-pipe input::placeholder {
  color: var(--text-secondary);
  opacity: 0.7;
}

.chat-pipe button {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: var(--accent);
  color: white;
  border: none;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  font-family: inherit;
  transition: background var(--transition), transform var(--transition);
  white-space: nowrap;
}

.chat-pipe button:hover {
  background: #3b62e0;
  transform: scale(1.02);
}

.chat-pipe button svg {
  transition: transform var(--transition);
}

.chat-pipe button:hover svg {
  transform: translateX(3px);
}

/* ===== SECTIONS ===== */
.section {
  margin: 80px 0;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
}

.section-header h2 {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.section-header .line {
  flex: 1;
  height: 1px;
  background: var(--border);
  margin-top: 4px;
}

/* ===== CARDS GRID (Models) ===== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
  backdrop-filter: blur(8px);
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 20px 35px -10px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(78, 124, 255, 0.15);
}

.card.highlight {
  background: linear-gradient(145deg, #131820, #1b2130);
  border-color: rgba(78, 124, 255, 0.2);
}

.card-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 3px 10px;
  border-radius: 20px;
  background: rgba(78, 124, 255, 0.12);
  color: #7ea4ff;
  margin-bottom: 16px;
  width: fit-content;
}

.card-tag.status {
  background: rgba(46, 204, 113, 0.12);
  color: #2ecc71;
}

.card-tag.special {
  background: rgba(155, 89, 182, 0.12);
  color: #c39bdb;
}

.card-tag.safety {
  background: rgba(231, 76, 60, 0.12);
  color: #e08b8b;
}

.card h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.param-badge {
  font-size: 0.9rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.08);
  padding: 2px 10px;
  border-radius: 12px;
  color: var(--text-secondary);
  margin-left: 8px;
}

.card-desc {
  color: var(--text);
  font-size: 0.95rem;
  margin-bottom: 14px;
  line-height: 1.5;
}

.card-tech {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.5;
  flex: 1;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  margin-top: auto;
  transition: gap var(--transition);
}

.card-link:hover {
  gap: 8px;
}

.card-status-btn {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 20px;
  background: rgba(46, 204, 113, 0.15);
  color: #2ecc71;
  font-size: 0.8rem;
  font-weight: 600;
  margin-top: auto;
  text-align: center;
  width: fit-content;
}

/* ===== FEATURES GRID ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 22px;
  transition: border-color var(--transition), transform var(--transition);
}

.feature-card:hover {
  border-color: rgba(255, 255, 255, 0.12);
  transform: translateY(-3px);
}

.feature-card .icon {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.feature-card h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ===== TABLE (Resources) ===== */
.table-container {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  background: var(--surface);
  backdrop-filter: blur(8px);
}

.custom-table {
  width: 100%;
  border-collapse: collapse;
}

.custom-table th {
  text-align: left;
  padding: 16px 24px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--border);
}

.custom-table td {
  padding: 16px 24px;
  font-size: 0.95rem;
  border-bottom: 1px solid var(--border);
}

.custom-table tr:last-child td {
  border-bottom: none;
}

.custom-table tr:hover td {
  background: rgba(255, 255, 255, 0.015);
}

.table-link {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color var(--transition);
}

.table-link:hover {
  color: var(--accent);
}

/* ===== FOOTER ===== */
footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  margin-top: 60px;
}

.footer-content {
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-content span {
  font-weight: 600;
  color: var(--text);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 640px) {
  .hero h1 {
    font-size: 2rem;
  }
  .subtitle {
    font-size: 1rem;
  }
  .chat-pipe {
    flex-direction: column;
    border-radius: var(--radius-sm);
  }
  .chat-pipe input {
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
  }
  .chat-pipe button {
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    justify-content: center;
    padding: 14px;
  }
  .section-header h2 {
    font-size: 1.5rem;
  }
  .cards-grid,
  .features-grid {
    grid-template-columns: 1fr;
  }
}