/* ═══════════════════════════════════════════════════════════════════════════
   Geely — Design System
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Tokens ──────────────────────────────────────────────────────────────── */
:root {
  --geely-blue:        #001E6C;
  --geely-blue-mid:    #0033A0;
  --geely-blue-light:  #1A56D6;
  --geely-accent:      #00AEEF;
  --geely-hybrid:      #00B37E;

  --surface-0:  #0A0F1E;
  --surface-1:  #111827;
  --surface-2:  #1C2540;
  --surface-3:  #253060;

  --text-primary:   #F0F4FF;
  --text-secondary: #8FA1C7;
  --text-muted:     #4A5880;

  --border:       rgba(255,255,255,0.08);
  --border-focus: var(--geely-accent);

  --radius-sm:  8px;
  --radius-md:  14px;
  --radius-lg:  22px;
  --radius-xl:  32px;

  --shadow-card: 0 8px 40px rgba(0, 30, 108, 0.45);
  --shadow-glow: 0 0 60px rgba(0, 174, 239, 0.15);

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);

  --font: 'Inter', system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font);
  background-color: var(--surface-0);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a   { text-decoration: none; color: inherit; }

/* ── Header ──────────────────────────────────────────────────────────────── */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(10, 15, 30, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-name {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text-primary);
  background: linear-gradient(135deg, #fff 30%, var(--geely-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.header-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition);
}
.header-nav a:hover { color: var(--text-primary); }

.nav-cta {
  padding: 9px 22px;
  background: var(--geely-blue-light);
  color: #fff !important;
  border-radius: var(--radius-sm);
  font-weight: 600 !important;
  transition: background var(--transition), transform var(--transition) !important;
}
.nav-cta:hover {
  background: var(--geely-accent) !important;
  transform: translateY(-1px);
}

/* ── Page Shell ──────────────────────────────────────────────────────────── */
.page-shell { padding-top: 64px; }

/* ── Hero ────────────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 480px;
  display: flex;
  align-items: center;
  padding: 80px 24px 72px;
  background:
    radial-gradient(ellipse 70% 60% at 60% 50%, rgba(0,51,160,0.35) 0%, transparent 70%),
    linear-gradient(160deg, var(--surface-0) 0%, var(--surface-2) 60%, var(--surface-0) 100%);
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 55% 55% at 65% 45%, rgba(0,174,239,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 620px;
  margin: 0 auto;
  text-align: center;
}

.hero-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--geely-accent);
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 16px;
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
}

.hero-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  background: linear-gradient(135deg, var(--geely-blue-light), var(--geely-accent));
  color: #fff;
  font-weight: 600;
  border-radius: var(--radius-lg);
  font-size: 0.95rem;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 24px rgba(0, 174, 239, 0.35);
}
.hero-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 36px rgba(0, 174, 239, 0.5);
}

/* ── Model List ──────────────────────────────────────────────────────────── */
.model-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 64px 24px;
}

/* ── Model Card ──────────────────────────────────────────────────────────── */
.model-card {
  position: relative;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.model-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
  border-color: rgba(0,174,239,0.3);
}

.model-card--featured {
  border-color: rgba(0,174,239,0.4);
  box-shadow: 0 0 0 1px rgba(0,174,239,0.15), var(--shadow-glow);
}

.model-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 5px 12px;
  background: rgba(0, 179, 126, 0.2);
  border: 1px solid rgba(0, 179, 126, 0.5);
  color: #00E5A0;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
}
.model-badge--hybrid {
  background: rgba(0, 174, 239, 0.15);
  border-color: rgba(0,174,239,0.5);
  color: var(--geely-accent);
}

.model-image {
  width: 100%;
  height: 220px;
  object-fit: contain;
  padding: 28px 20px 12px;
  background: linear-gradient(180deg, var(--surface-2) 0%, var(--surface-1) 100%);
  transition: transform 0.4s ease;
}
.model-card:hover .model-image { transform: scale(1.04); }

.model-info {
  padding: 20px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.model-info h2 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
}

.model-tagline {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

/* ── Brochure Button ─────────────────────────────────────────────────────── */
.brochure-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding: 10px 20px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 500;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
  align-self: flex-start;
}
.brochure-button:hover {
  background: var(--geely-blue-light);
  border-color: var(--geely-blue-light);
  color: #fff;
}

/* ── Contact Section ─────────────────────────────────────────────────────── */
.contact-section {
  background: linear-gradient(180deg, var(--surface-0) 0%, var(--surface-2) 50%, var(--surface-0) 100%);
  padding: 80px 24px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.contact-inner {
  max-width: 820px;
  margin: 0 auto;
}

.contact-header {
  text-align: center;
  margin-bottom: 52px;
}

.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--geely-accent);
  margin-bottom: 12px;
}

.contact-header h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.contact-sub {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* ── Lead Form ───────────────────────────────────────────────────────────── */
.lead-form {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  box-shadow: var(--shadow-card);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

.req { color: var(--geely-accent); }

.form-group input,
.form-group select {
  width: 100%;
  padding: 13px 16px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  appearance: none;
  -webkit-appearance: none;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%238FA1C7' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
  cursor: pointer;
}
.form-group select option { background: var(--surface-2); }

.form-group input::placeholder { color: var(--text-muted); }

.form-group input:focus,
.form-group select:focus {
  border-color: var(--geely-accent);
  box-shadow: 0 0 0 3px rgba(0, 174, 239, 0.15);
}

.input-error {
  border-color: #F56565 !important;
  box-shadow: 0 0 0 3px rgba(245, 101, 101, 0.15) !important;
}

/* ── Submit Button ───────────────────────────────────────────────────────── */
.submit-btn {
  align-self: center;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 52px;
  background: linear-gradient(135deg, var(--geely-blue-mid), var(--geely-blue-light));
  color: #fff;
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  box-shadow: 0 4px 20px rgba(0, 51, 160, 0.5);
  min-width: 200px;
}
.submit-btn:hover:not(:disabled) {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(0, 51, 160, 0.7);
  background: linear-gradient(135deg, var(--geely-blue-light), var(--geely-accent));
}
.submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Spinner */
.btn-spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Toast ───────────────────────────────────────────────────────────────── */
.toast {
  margin-top: 20px;
  padding: 0;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  text-align: center;
  transition: max-height 0.3s ease, opacity 0.3s ease, padding 0.3s ease;
}
.toast--visible {
  padding: 14px 20px;
  max-height: 80px;
  opacity: 1;
}
.toast--success {
  background: rgba(0, 179, 126, 0.15);
  border: 1px solid rgba(0, 179, 126, 0.4);
  color: #00E5A0;
}
.toast--error {
  background: rgba(245, 101, 101, 0.12);
  border: 1px solid rgba(245, 101, 101, 0.4);
  color: #FC8181;
}

/* ── Admin Bar ───────────────────────────────────────────────────────────── */
.admin-bar {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 40px 24px;
  background: var(--surface-1);
  border-top: 1px solid var(--border);
}

.admin-btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 28px;
  background: var(--geely-blue-mid);
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}
.admin-btn:hover {
  background: var(--geely-blue-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,51,160,0.5);
}

.admin-btn--outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}
.admin-btn--outline:hover {
  background: var(--surface-2);
  color: var(--text-primary);
  border-color: var(--geely-accent);
}

/* ── Footer ──────────────────────────────────────────────────────────────── */
.site-footer {
  text-align: center;
  padding: 28px 24px;
  font-size: 0.82rem;
  color: var(--text-muted);
  background: var(--surface-0);
  border-top: 1px solid var(--border);
}

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .form-row { grid-template-columns: 1fr; }
  .lead-form { padding: 28px 20px; }
  .header-nav a:not(.nav-cta) { display: none; }
  .model-list { padding: 40px 16px; gap: 20px; }
}