:root {
  --bg: #0a0a0f;
  --bg-2: #111118;
  --bg-card: #16161f;
  --border: rgba(255,255,255,0.08);
  --text: #e8e8f0;
  --text-muted: #7a7a9a;
  --accent: #6c63ff;
  --accent-2: #ff6b9d;
  --accent-glow: rgba(108, 99, 255, 0.3);
  --success: #22d3a5;
  --warning: #f59e0b;
  --danger: #ef4444;
  --radius: 16px;
  --radius-sm: 8px;
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

a { text-decoration: none; color: inherit; }

/* ─── NAVBAR ─── */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 24px; height: 64px;
}
.brand {
  font-size: 1.25rem; font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
}
.nav-links {
  display: flex; align-items: center; gap: 24px;
}
.nav-links a {
  font-size: 0.9rem; font-weight: 500; color: var(--text-muted);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }

/* ─── BUTTONS ─── */
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: linear-gradient(135deg, var(--accent), #8b80ff);
  color: #fff; font-weight: 600; font-size: 1rem;
  padding: 14px 28px; border-radius: 50px;
  border: none; cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 24px var(--accent-glow);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 32px var(--accent-glow); }

.btn-primary-sm {
  display: inline-flex; align-items: center;
  background: linear-gradient(135deg, var(--accent), #8b80ff);
  color: #fff; font-weight: 600; font-size: 0.85rem;
  padding: 8px 18px; border-radius: 50px;
  border: none; cursor: pointer;
  transition: transform 0.2s;
}
.btn-primary-sm:hover { transform: translateY(-1px); }

.btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.06);
  color: var(--text); font-weight: 600; font-size: 1rem;
  padding: 14px 28px; border-radius: 50px;
  border: 1px solid var(--border); cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}
.btn-secondary:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.2); }

.btn-ghost {
  color: var(--text-muted); font-size: 0.9rem; font-weight: 500;
  transition: color 0.2s;
}
.btn-ghost:hover { color: var(--text); }

/* ─── HERO ─── */
.hero {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: space-between;
  padding: 100px 80px 60px;
  position: relative; overflow: hidden;
  max-width: 1300px; margin: 0 auto;
  gap: 60px;
}
.hero-bg {
  position: fixed; inset: 0; z-index: -1;
  background:
    radial-gradient(ellipse 60% 50% at 20% 50%, rgba(108,99,255,0.12) 0%, transparent 60%),
    radial-gradient(ellipse 50% 60% at 80% 30%, rgba(255,107,157,0.08) 0%, transparent 60%);
}
.hero-content { flex: 1; max-width: 600px; }
.badge-pill {
  display: inline-block;
  background: rgba(108,99,255,0.15);
  border: 1px solid rgba(108,99,255,0.3);
  color: #a89cff;
  font-size: 0.8rem; font-weight: 600;
  padding: 6px 14px; border-radius: 50px;
  margin-bottom: 24px;
  text-transform: uppercase; letter-spacing: 0.08em;
}
.hero-title {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 800; line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}
.gradient-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-sub {
  font-size: 1.1rem; color: var(--text-muted); margin-bottom: 40px; max-width: 480px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* Hero visual card */
.hero-visual {
  flex: 0 0 320px; display: flex; align-items: center; justify-content: center;
}
.car-card-float {
  width: 280px; height: 280px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 32px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow), 0 0 80px rgba(108,99,255,0.1);
  animation: float 3s ease-in-out infinite;
}
.car-card-inner { text-align: center; position: relative; }
.car-emoji { font-size: 7rem; }
.match-badge {
  position: absolute; top: -30px; right: -60px;
  background: linear-gradient(135deg, var(--success), #15b888);
  color: #fff; font-size: 0.8rem; font-weight: 700;
  padding: 6px 14px; border-radius: 50px;
  box-shadow: 0 4px 12px rgba(34, 211, 165, 0.4);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }
@keyframes pulse { 0%,100% { transform: scale(1); } 50% { transform: scale(1.05); } }

/* ─── SECTIONS ─── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section-title { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 800; letter-spacing: -0.02em; }
.section-sub { color: var(--text-muted); margin-top: 8px; font-size: 1.05rem; }
.section-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 32px; }
.view-all-link { color: var(--accent); font-weight: 600; font-size: 0.9rem; transition: opacity 0.2s; }
.view-all-link:hover { opacity: 0.7; }

/* How it works */
.how-it-works { padding: 100px 0; }
.how-it-works .section-title { text-align: center; }
.how-it-works .section-sub { text-align: center; }
.steps-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; margin-top: 60px; }
.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius); padding: 36px 28px;
  position: relative; transition: transform 0.3s, border-color 0.3s;
}
.step-card:hover { transform: translateY(-4px); border-color: rgba(108,99,255,0.3); }
.step-num {
  font-size: 3rem; font-weight: 900; color: rgba(108,99,255,0.15);
  position: absolute; top: 20px; right: 24px; line-height: 1;
}
.step-icon { font-size: 2.2rem; margin-bottom: 16px; }
.step-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; }
.step-card p { color: var(--text-muted); font-size: 0.95rem; }

/* Trending */
.trending-section { padding: 80px 0 100px; }
.cars-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }

/* Car Card */
.car-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
  cursor: pointer;
}
.car-card:hover { transform: translateY(-6px); border-color: rgba(108,99,255,0.25); box-shadow: 0 20px 48px rgba(0,0,0,0.3); }
.car-card-img {
  width: 100%; height: 160px;
  background: linear-gradient(135deg, #1a1a2e, #16213e);
  display: flex; align-items: center; justify-content: center;
  font-size: 4rem;
}
.car-card-body { padding: 20px; }
.car-card-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 4px; }
.car-card-variant { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 12px; }
.car-card-meta { display: flex; align-items: center; justify-content: space-between; }
.car-price { font-size: 1rem; font-weight: 700; color: var(--accent); }
.car-rating { display: flex; align-items: center; gap: 4px; font-size: 0.85rem; color: var(--warning); }
.car-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 12px; }
.car-tag {
  background: rgba(108,99,255,0.12); border: 1px solid rgba(108,99,255,0.2);
  color: #a89cff; font-size: 0.72rem; font-weight: 600;
  padding: 3px 10px; border-radius: 50px; text-transform: uppercase; letter-spacing: 0.05em;
}

/* Skeleton */
.car-skeleton {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); height: 280px;
  animation: shimmer 1.5s infinite;
}
@keyframes shimmer {
  0% { opacity: 1; } 50% { opacity: 0.4; } 100% { opacity: 1; }
}

/* Match badge on recommendation cards */
.match-percent {
  display: inline-block;
  background: linear-gradient(135deg, var(--success), #15b888);
  color: #fff; font-size: 0.8rem; font-weight: 700;
  padding: 4px 12px; border-radius: 50px;
}

/* ─── QUESTIONNAIRE ─── */
.quest-page { min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 80px 24px; }
.progress-bar-wrap { width: 100%; max-width: 600px; margin-bottom: 40px; }
.progress-label { display: flex; justify-content: space-between; font-size: 0.85rem; color: var(--text-muted); margin-bottom: 10px; }
.progress-bar {
  height: 6px; background: var(--bg-card); border-radius: 50px;
  border: 1px solid var(--border); overflow: hidden;
}
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); border-radius: 50px; transition: width 0.4s ease; }

.question-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 24px;
  padding: 48px; width: 100%; max-width: 600px;
  box-shadow: var(--shadow);
  animation: slideUp 0.4s ease;
}
@keyframes slideUp { from { opacity:0; transform: translateY(24px); } to { opacity:1; transform:translateY(0); } }

.question-text { font-size: 1.5rem; font-weight: 700; margin-bottom: 32px; letter-spacing: -0.02em; }

.options-list { display: flex; flex-direction: column; gap: 12px; }
.option-btn {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border); border-radius: 12px;
  padding: 16px 20px; cursor: pointer;
  color: var(--text); font-size: 0.95rem; font-weight: 500;
  display: flex; align-items: center; gap: 14px;
  transition: all 0.2s; text-align: left;
}
.option-btn:hover { background: rgba(108,99,255,0.08); border-color: rgba(108,99,255,0.3); }
.option-btn.selected { background: rgba(108,99,255,0.15); border-color: var(--accent); color: #c9c5ff; }
.option-check {
  width: 20px; height: 20px; border-radius: 50%; border: 2px solid var(--border);
  flex-shrink: 0; display: flex; align-items: center; justify-content: center;
  transition: all 0.2s;
}
.option-btn.selected .option-check { background: var(--accent); border-color: var(--accent); }
.option-btn.selected .option-check::after { content: '✓'; font-size: 0.7rem; color: #fff; }

.quest-nav { display: flex; justify-content: space-between; align-items: center; margin-top: 32px; }
.btn-back { background: none; border: 1px solid var(--border); color: var(--text-muted); padding: 12px 24px; border-radius: 50px; cursor: pointer; font-size: 0.9rem; font-weight: 500; transition: all 0.2s; }
.btn-back:hover { border-color: rgba(255,255,255,0.2); color: var(--text); }
.btn-next { background: linear-gradient(135deg, var(--accent), #8b80ff); color: #fff; border: none; padding: 12px 28px; border-radius: 50px; cursor: pointer; font-size: 0.9rem; font-weight: 600; transition: all 0.2s; }
.btn-next:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-next:not(:disabled):hover { transform: translateY(-2px); box-shadow: 0 6px 20px var(--accent-glow); }

/* ─── RECOMMENDATIONS ─── */
.rec-page { padding: 100px 24px 60px; max-width: 900px; margin: 0 auto; }
.rec-title { font-size: 2rem; font-weight: 800; margin-bottom: 8px; }
.rec-subtitle { color: var(--text-muted); margin-bottom: 40px; }
.rec-list { display: flex; flex-direction: column; gap: 20px; }
.rec-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px; display: flex; gap: 24px; align-items: center;
  transition: border-color 0.2s;
}
.rec-card:hover { border-color: rgba(108,99,255,0.25); }
.rec-rank { font-size: 2rem; font-weight: 900; color: rgba(108,99,255,0.25); min-width: 48px; }
.rec-info { flex: 1; }
.rec-name { font-size: 1.2rem; font-weight: 700; margin-bottom: 4px; }
.rec-variant { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 10px; }
.rec-explanation { font-size: 0.85rem; color: var(--text-muted); margin-top: 8px; }
.rec-score { text-align: center; }
.score-ring { font-size: 1.5rem; font-weight: 800; color: var(--success); }

/* ─── BROWSE ─── */
.browse-page { padding: 100px 24px 60px; max-width: 1200px; margin: 0 auto; }
.browse-header { margin-bottom: 40px; }
.search-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }
.search-input {
  flex: 1; min-width: 240px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; padding: 12px 18px;
  color: var(--text); font-size: 0.95rem; outline: none;
  transition: border-color 0.2s;
}
.search-input:focus { border-color: rgba(108,99,255,0.4); }
.search-input::placeholder { color: var(--text-muted); }
.filter-select {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; padding: 12px 16px;
  color: var(--text); font-size: 0.9rem; outline: none; cursor: pointer;
}

/* ─── AUTH PAGES ─── */
.auth-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 80px 24px; }
.auth-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 24px;
  padding: 48px; width: 100%; max-width: 440px;
  box-shadow: var(--shadow);
}
.auth-title { font-size: 1.8rem; font-weight: 800; margin-bottom: 8px; }
.auth-sub { color: var(--text-muted); margin-bottom: 32px; font-size: 0.95rem; }
.form-group { margin-bottom: 18px; }
.form-label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--text-muted); margin-bottom: 8px; text-transform: uppercase; letter-spacing: 0.05em; }
.form-input {
  width: 100%; background: rgba(255,255,255,0.04); border: 1px solid var(--border);
  border-radius: 12px; padding: 14px 16px;
  color: var(--text); font-size: 0.95rem; outline: none; transition: border-color 0.2s;
}
.form-input:focus { border-color: rgba(108,99,255,0.5); }
.btn-submit {
  width: 100%; background: linear-gradient(135deg, var(--accent), #8b80ff);
  color: #fff; font-weight: 700; font-size: 1rem;
  padding: 15px; border-radius: 12px; border: none; cursor: pointer;
  transition: all 0.2s; margin-top: 8px;
}
.btn-submit:hover { transform: translateY(-2px); box-shadow: 0 8px 24px var(--accent-glow); }
.auth-switch { text-align: center; margin-top: 24px; font-size: 0.9rem; color: var(--text-muted); }
.auth-switch a { color: var(--accent); font-weight: 600; }
.error-msg { color: var(--danger); font-size: 0.85rem; margin-top: 12px; text-align: center; display: none; }

/* username badge */
.username-badge {
  background: rgba(108,99,255,0.15); border: 1px solid rgba(108,99,255,0.3);
  color: #a89cff; font-size: 0.8rem; font-weight: 600;
  padding: 4px 12px; border-radius: 50px;
}

/* ─── FOOTER ─── */
.footer {
  border-top: 1px solid var(--border); padding: 24px 0;
  text-align: center; color: var(--text-muted); font-size: 0.85rem;
}

/* ─── TOAST ─── */
.toast {
  position: fixed; bottom: 32px; right: 32px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; padding: 14px 20px;
  font-size: 0.9rem; font-weight: 500;
  box-shadow: var(--shadow); z-index: 9999;
  animation: slideUp 0.3s ease;
  display: none;
}
.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--danger); }

/* ─── RESPONSIVE ─── */
@media (max-width: 768px) {
  .hero { flex-direction: column; padding: 80px 24px 60px; text-align: center; }
  .hero-actions { justify-content: center; }
  .hero-visual { display: none; }
  .nav-links a:not(.btn-primary-sm):not(.btn-ghost) { display: none; }
  .rec-card { flex-direction: column; }
}