/* SkyWing - Drone Token Website */
:root {
  --bg-dark: #0a0e17;
  --bg-card: #111827;
  --bg-card-hover: #1a2332;
  --accent: #06b6d4;
  --accent-dim: #0891b2;
  --accent-glow: rgba(6, 182, 212, 0.4);
  --text: #e5e7eb;
  --text-muted: #9ca3af;
  --border: rgba(148, 163, 184, 0.12);
  --font-display: 'Orbitron', sans-serif;
  --font-body: 'Noto Sans SC', -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 0;
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: all 0.3s;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--text);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
}

.logo-icon {
  color: var(--accent);
  font-size: 1.5rem;
}

.logo-badge {
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-dim));
  color: var(--bg-dark);
  border-radius: 4px;
  font-weight: 600;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s;
}

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

.nav-cta {
  color: var(--accent) !important;
  font-weight: 500;
}

.lang-switch {
  font-size: 0.85rem !important;
  opacity: 0.8;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .nav-toggle {
    display: block;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.25s;
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dim));
  color: var(--bg-dark);
  box-shadow: 0 0 20px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px var(--accent-glow);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}

.btn-outline:hover {
  background: rgba(6, 182, 212, 0.1);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 6rem 0 4rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(6, 182, 212, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(6, 182, 212, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.gradient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
}

.orb-1 {
  width: 400px;
  height: 400px;
  background: var(--accent);
  top: -100px;
  right: -100px;
}

.orb-2 {
  width: 300px;
  height: 300px;
  background: #0ea5e9;
  bottom: 10%;
  left: -50px;
}

.orb-3 {
  width: 200px;
  height: 200px;
  background: #22d3ee;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0.2;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-tag {
  font-size: 0.9rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  line-height: 1.1;
  margin-bottom: 0.5rem;
  letter-spacing: 0.02em;
}

.hero-title-line {
  display: block;
  background: linear-gradient(135deg, #fff 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-title-sub {
  font-size: 0.45em;
  font-weight: 500;
  color: var(--text-muted);
  -webkit-text-fill-color: var(--text-muted);
}

.hero-desc {
  max-width: 520px;
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-visual {
  position: absolute;
  right: 3%;
  bottom: 10%;
  width: 420px;
  max-width: 45vw;
  z-index: 1;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5), 0 0 40px rgba(6, 182, 212, 0.15);
  border: 1px solid rgba(6, 182, 212, 0.2);
}

.hero-drone-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* 图库 */
.section-gallery {
  padding: 4rem 0;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.gallery-item {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 4/3;
}

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

.gallery-item:hover img {
  transform: scale(1.08);
}

.gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.75rem 1rem;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 500;
}

.ecosystem-visual {
  margin-bottom: 2.5rem;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.ecosystem-hero-img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  display: block;
}

@media (max-width: 768px) {
  .hero {
    padding-top: 5rem;
  }
  .hero-actions {
    flex-direction: column;
  }
  .hero-visual {
    position: relative;
    right: auto;
    bottom: auto;
    width: 100%;
    max-width: none;
    margin-top: 2rem;
    padding: 0 1rem;
  }
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .ecosystem-hero-img {
    height: 220px;
  }
}

/* Sections */
.section {
  padding: 5rem 0;
}

.section-dark {
  background: var(--bg-card);
}

.section-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 3rem;
  text-align: center;
  color: var(--text);
}

/* About */
.about-banner {
  margin-bottom: 2.5rem;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.about-banner img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  display: block;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.about-card {
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: all 0.3s;
}

.about-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(6, 182, 212, 0.3);
  transform: translateY(-4px);
}

.about-icon {
  font-size: 2rem;
  color: var(--accent);
  margin-bottom: 1rem;
}

.about-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.about-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Ecosystem */
.ecosystem-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.ecosystem-item {
  padding: 1.5rem;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: all 0.25s;
}

.ecosystem-item:hover {
  border-color: var(--accent);
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.1);
}

.ecosystem-label {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.ecosystem-item p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Token */
.token-overview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.token-card {
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.token-card.main {
  border-color: rgba(6, 182, 212, 0.3);
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(6, 182, 212, 0.05) 100%);
}

.token-card h3,
.token-card h4 {
  margin-bottom: 1rem;
  font-size: 1.25rem;
}

.token-symbol {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.token-tagline {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-top: 0.5rem;
}

.token-specs,
.token-card ul {
  list-style: none;
}

.token-specs li,
.token-card ul li {
  padding: 0.5rem 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  border-bottom: 1px solid var(--border);
}

.token-specs li:last-child,
.token-card ul li:last-child {
  border-bottom: none;
}

.token-specs strong,
.token-card strong {
  color: var(--text);
}

@media (max-width: 768px) {
  .token-overview {
    grid-template-columns: 1fr;
  }
}

/* Roadmap */
.roadmap-timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.roadmap-item {
  padding: 1.5rem;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
}

.roadmap-phase {
  font-size: 0.8rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.roadmap-item h4 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.roadmap-item p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* CTA */
.cta-section {
  text-align: center;
}

.cta-desc {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* Footer */
.footer {
  padding: 3rem 0 2rem;
  border-top: 1px solid var(--border);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 600;
}

.footer-brand .logo-icon {
  color: var(--accent);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
}

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

.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.85rem;
}

@media (max-width: 600px) {
  .footer-top {
    flex-direction: column;
    gap: 1rem;
  }
}