/* ============================
   DriveLuxe - 汽车租赁网站
   设计方向：暗夜奢华 + 琥珀金点缀
   全页暗色主题，section 间用微差底色区分
   ============================ */

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

:root {
  --bg-base: #0a0b0f;
  --bg-1: #0d0f14;
  --bg-2: #11131a;
  --bg-3: #14161d;
  --bg-card: #181a22;
  --bg-card-2: #1e2129;
  --bg-input: #1a1d26;
  --accent: #d4a24e;
  --accent-light: #e8c178;
  --accent-dark: #b8862e;
  --accent-glow: rgba(212, 162, 78, 0.15);
  --text: #f5f4f0;
  --text-2: rgba(245, 244, 240, 0.7);
  --text-3: rgba(245, 244, 240, 0.5);
  --text-4: rgba(245, 244, 240, 0.35);
  --border: rgba(255, 255, 255, 0.08);
  --border-2: rgba(255, 255, 255, 0.05);
  --border-accent: rgba(212, 162, 78, 0.3);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --font-display: 'Bricolage Grotesque', sans-serif;
  --font-body: 'Manrope', sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg-base);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  display: block;
}

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

ul {
  list-style: none;
}

/* ---- Typography ---- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

/* ============================
   NAVBAR
   ============================ */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  background: transparent;
}

#navbar.scrolled {
  background: rgba(10, 11, 15, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 18px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 22px;
  color: var(--text);
  letter-spacing: -0.02em;
}

.logo-icon {
  font-size: 28px;
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-2);
  transition: color 0.2s;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.25s;
}

.nav-links a:hover {
  color: var(--text);
}

.nav-links a:hover::after {
  width: 100%;
}

.btn-nav {
  padding: 10px 24px;
  background: var(--accent);
  color: var(--bg-base);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
  transition: all 0.2s;
}

.btn-nav:hover {
  background: var(--accent-light);
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 28px;
  cursor: pointer;
}

/* ============================
   HERO
   ============================ */
#hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url('images/hero.jpg') center center / cover no-repeat;
  transform: scale(1.05);
  animation: heroZoom 20s ease-in-out infinite alternate;
}

@keyframes heroZoom {
  from { transform: scale(1.05); }
  to { transform: scale(1.15); }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10, 11, 15, 0.88) 0%, rgba(10, 11, 15, 0.55) 50%, rgba(10, 11, 15, 0.82) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 100px 40px 80px;
  width: 100%;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  color: var(--text);
  margin-bottom: 24px;
  max-width: 760px;
  animation: fadeInUp 0.7s ease 0.15s both;
}

.hero-sub {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  color: var(--text-2);
  max-width: 520px;
  margin-bottom: 36px;
  animation: fadeInUp 0.7s ease 0.3s both;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeInUp 0.7s ease 0.45s both;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--accent);
  color: var(--bg-base);
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 15px;
  transition: all 0.25s;
  cursor: pointer;
  border: none;
  font-family: var(--font-body);
}

.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(212, 162, 78, 0.35);
}

.btn-primary iconify-icon {
  transition: transform 0.25s;
}

.btn-primary:hover iconify-icon {
  transform: translateX(4px);
}

.btn-ghost {
  padding: 14px 32px;
  border: 1.5px solid rgba(245, 244, 240, 0.3);
  color: var(--text);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 15px;
  transition: all 0.25s;
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent-light);
  background: var(--accent-glow);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================
   STATS STRIP
   ============================ */
#stats-strip {
  background: var(--bg-1);
  border-top: 1px solid var(--border-2);
  border-bottom: 1px solid var(--border-2);
}

.stats-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 32px 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  text-align: center;
}

.stat-num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
}

.stat-label {
  font-size: 13px;
  color: var(--text-3);
  font-weight: 500;
}

.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border);
}

/* ============================
   SECTION HEADER
   ============================ */
.section-header {
  max-width: 720px;
  margin: 0 auto 56px;
  padding: 0 40px;
  text-align: center;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  margin-bottom: 16px;
  color: var(--text);
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-3);
}

/* ============================
   FLEET
   ============================ */
#fleet {
  padding: 100px 0;
  background: var(--bg-base);
}

.fleet-grid {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
  display: grid;
  grid-template-columns: 1fr 1.2fr 1fr;
  gap: 28px;
  align-items: stretch;
}

.car-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  display: flex;
  flex-direction: column;
}

.car-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-accent);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.3);
}

.car-card-featured {
  border: 2px solid var(--accent);
  background: var(--bg-card-2);
}

.car-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 3;
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.badge-economy {
  background: rgba(100, 180, 100, 0.15);
  color: #8ed88e;
  border: 1px solid rgba(100, 180, 100, 0.3);
}

.badge-suv {
  background: var(--accent);
  color: var(--bg-base);
}

.badge-sports {
  background: rgba(220, 80, 80, 0.15);
  color: #e88;
  border: 1px solid rgba(220, 80, 80, 0.3);
}

.car-img-wrap {
  background: linear-gradient(180deg, var(--bg-2) 0%, var(--bg-3) 100%);
  height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.car-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}

.car-card:hover .car-img-wrap img {
  transform: scale(1.06);
}

.car-info {
  padding: 28px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.car-info h3 {
  font-size: 1.5rem;
  margin-bottom: 8px;
  color: var(--text);
}

.car-desc {
  font-size: 0.9rem;
  color: var(--text-3);
  margin-bottom: 18px;
}

.car-specs {
  display: flex;
  gap: 16px;
  margin-bottom: 22px;
  flex-wrap: wrap;
}

.car-specs span {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.82rem;
  color: var(--text-3);
  font-weight: 500;
}

.car-specs iconify-icon {
  font-size: 17px;
  color: var(--accent);
}

.car-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  margin-top: auto;
}

.car-price {
  display: flex;
  align-items: baseline;
  gap: 2px;
}

.price-num {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text);
}

.price-unit {
  font-size: 0.85rem;
  color: var(--text-3);
}

.btn-card {
  padding: 10px 24px;
  background: var(--bg-3);
  color: var(--text);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
  transition: all 0.2s;
  border: 1px solid var(--border);
}

.btn-card:hover {
  background: var(--accent);
  color: var(--bg-base);
  border-color: var(--accent);
}

.btn-card-featured {
  background: var(--accent);
  color: var(--bg-base);
  border-color: var(--accent);
}

.btn-card-featured:hover {
  background: var(--accent-dark);
  color: var(--text);
  border-color: var(--accent-dark);
}

/* ============================
   ADVANTAGES
   ============================ */
#advantages {
  padding: 100px 0;
  background: var(--bg-1);
}

.adv-grid {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.adv-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid var(--border);
  transition: all 0.3s;
}

.adv-card:hover {
  background: var(--bg-card-2);
  border-color: var(--border-accent);
  transform: translateY(-4px);
}

.adv-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow);
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
}

.adv-icon iconify-icon {
  font-size: 30px;
  color: var(--accent);
}

.adv-card h3 {
  font-size: 1.25rem;
  color: var(--text);
  margin-bottom: 10px;
}

.adv-card p {
  font-size: 0.9rem;
  color: var(--text-3);
  line-height: 1.6;
}

/* ============================
   PROCESS
   ============================ */
#process {
  padding: 100px 0;
  background: var(--bg-base);
}

.process-timeline {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
}

.process-step {
  flex: 1;
  text-align: center;
  padding: 0 20px;
  position: relative;
}

.process-num {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--accent);
  opacity: 0.15;
  margin-bottom: -16px;
}

.process-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 2px solid var(--accent);
  border-radius: 50%;
  position: relative;
  z-index: 2;
}

.process-icon iconify-icon {
  font-size: 34px;
  color: var(--accent);
}

.process-step h3 {
  font-size: 1.35rem;
  margin-bottom: 10px;
  color: var(--text);
}

.process-step p {
  font-size: 0.9rem;
  color: var(--text-3);
  max-width: 260px;
  margin: 0 auto;
}

.process-line {
  flex: 0 0 80px;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--accent) 0, var(--accent) 6px, transparent 6px, transparent 14px);
  margin-top: 72px;
}

/* ============================
   REVIEWS
   ============================ */
#reviews {
  padding: 100px 0;
  background: var(--bg-1);
}

.reviews-grid {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.review-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  border: 1px solid var(--border);
  transition: all 0.3s;
}

.review-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-accent);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.2);
}

.review-stars {
  display: flex;
  gap: 4px;
  margin-bottom: 18px;
}

.review-stars iconify-icon {
  font-size: 20px;
  color: var(--accent);
}

.review-text {
  font-size: 0.95rem;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 24px;
  font-style: italic;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 14px;
}

.review-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--bg-3);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  border: 1px solid var(--border);
}

.review-meta {
  display: flex;
  flex-direction: column;
}

.review-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text);
}

.review-role {
  font-size: 0.82rem;
  color: var(--text-3);
}

/* ============================
   CONTACT
   ============================ */
#contact {
  padding: 100px 0;
  background: var(--bg-base);
}

.contact-wrap {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.contact-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  color: var(--text);
  margin-bottom: 20px;
}

.contact-desc {
  font-size: 1.05rem;
  color: var(--text-3);
  margin-bottom: 36px;
}

.contact-items {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 1rem;
  color: var(--text-2);
}

.contact-item iconify-icon {
  font-size: 24px;
  color: var(--accent);
}

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.form-row {
  margin-bottom: 20px;
}

.form-row label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-2);
  margin-bottom: 8px;
}

.form-row input,
.form-row select {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.95rem;
  font-family: var(--font-body);
  transition: border 0.2s;
}

.form-row input:focus,
.form-row select:focus {
  outline: none;
  border-color: var(--accent);
}

.form-row input::placeholder {
  color: var(--text-4);
}

.form-row select option {
  background: var(--bg-card);
  color: var(--text);
}

.btn-full {
  width: 100%;
  justify-content: center;
  margin-top: 8px;
}

.form-note {
  text-align: center;
  font-size: 0.85rem;
  margin-top: 14px;
  color: var(--accent-light);
  min-height: 20px;
}

/* ============================
   FOOTER
   ============================ */
footer {
  background: #06070a;
  padding: 60px 0 0;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px 48px;
  display: grid;
  grid-template-columns: 1.5fr 2fr;
  gap: 48px;
}

.footer-logo {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.88rem;
  color: var(--text-3);
  max-width: 320px;
  line-height: 1.6;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer-col h4 {
  font-size: 0.95rem;
  color: var(--text);
  margin-bottom: 16px;
  font-family: var(--font-body);
  font-weight: 700;
}

.footer-col a {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-3);
  margin-bottom: 10px;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: var(--accent-light);
}

.footer-col iconify-icon {
  font-size: 18px;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 24px 40px;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.82rem;
  color: var(--text-4);
}

/* ============================
   RESPONSIVE
   ============================ */
@media (max-width: 968px) {
  .nav-links {
    display: none;
  }

  .btn-nav {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .nav-inner {
    padding: 16px 24px;
  }

  .hero-content {
    padding: 100px 24px 60px;
  }

  .stats-inner {
    gap: 24px;
    padding: 24px;
  }

  .stat-num {
    font-size: 1.5rem;
  }

  .fleet-grid {
    grid-template-columns: 1fr;
    padding: 0 24px;
  }

  .adv-grid {
    grid-template-columns: repeat(2, 1fr);
    padding: 0 24px;
  }

  .process-timeline {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }

  .process-line {
    width: 2px;
    height: 40px;
    flex: none;
    margin-top: 0;
    background: repeating-linear-gradient(180deg, var(--accent) 0, var(--accent) 6px, transparent 6px, transparent 14px);
  }

  .reviews-grid {
    grid-template-columns: 1fr;
    padding: 0 24px;
  }

  .contact-wrap {
    grid-template-columns: 1fr;
    padding: 0 24px;
    gap: 40px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    padding: 0 24px 48px;
  }

  .footer-links {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
}

@media (max-width: 640px) {
  .section-header {
    padding: 0 24px;
    margin-bottom: 40px;
  }

  #fleet, #advantages, #process, #reviews, #contact {
    padding: 64px 0;
  }

  .adv-grid {
    grid-template-columns: 1fr;
  }

  .footer-links {
    grid-template-columns: 1fr;
  }

  .hero-cta {
    flex-direction: column;
  }

  .btn-primary, .btn-ghost {
    text-align: center;
    justify-content: center;
  }

  .contact-form {
    padding: 28px 20px;
  }

  .stats-inner {
    flex-direction: column;
    gap: 16px;
  }

  .stat-divider {
    width: 60px;
    height: 1px;
  }
}

/* ============================
   REDUCED MOTION
   ============================ */
@media (prefers-reduced-motion: reduce) {
  .hero-bg {
    animation: none;
    transform: scale(1.05);
  }

  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}