/* ========================================
   蘑菇成品人视频 - 品牌网站样式表
   ======================================== */

/* CSS Variables */
:root {
  --primary: #6C5CE7;
  --secondary: #2D3436;
  --accent: #00CEC9;
  --background: #0D0D1A;
  --background-light: #1A1A2E;
  --text: #FFFFFF;
  --text-light: #A0AEC0;
  --border: rgba(255, 255, 255, 0.1);
  --gradient: linear-gradient(135deg, #6C5CE7, #00CEC9);
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  --radius: 12px;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Sans SC', sans-serif;
  background-color: var(--background);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

ul, ol {
  list-style: none;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

.text-gradient {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header / Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(13, 13, 26, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 40px;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.5rem;
  font-weight: 700;
}

.logo-icon {
  width: 45px;
  height: 45px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.nav-links {
  display: flex;
  gap: 40px;
}

.nav-links a {
  color: var(--text-light);
  font-weight: 500;
  position: relative;
  padding: 8px 0;
}

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

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

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 10px;
}

.nav-toggle span {
  width: 25px;
  height: 2px;
  background: var(--text);
  transition: var(--transition);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 20px 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at center, rgba(108, 92, 231, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  max-width: 800px;
  position: relative;
  z-index: 1;
}

.hero h1 {
  margin-bottom: 24px;
  animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-light);
  margin-bottom: 40px;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  animation: fadeInUp 0.8s ease 0.4s both;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.btn-primary {
  background: var(--gradient);
  color: var(--text);
  box-shadow: 0 8px 30px rgba(108, 92, 231, 0.4);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(108, 92, 231, 0.5);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 2px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--primary);
  background: rgba(108, 92, 231, 0.1);
}

/* Sections */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-header p {
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 30px;
}

.card {
  background: var(--background-light);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid var(--border);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
  border-color: var(--primary);
}

.card-image {
  height: 180px;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  position: relative;
  overflow: hidden;
}

.card-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.2);
  opacity: 0;
  transition: var(--transition);
}

.card:hover .card-image::before {
  opacity: 1;
}

.card-content {
  padding: 24px;
}

.card-content h3 {
  margin-bottom: 12px;
  font-size: 1.25rem;
}

.card-content p {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.card-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(108, 92, 231, 0.2);
  color: var(--accent);
  border-radius: 20px;
  font-size: 0.8rem;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.feature-item {
  text-align: center;
  padding: 40px 30px;
  background: var(--background-light);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.feature-item:hover {
  border-color: var(--primary);
  transform: translateY(-5px);
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 24px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}

.feature-item h3 {
  margin-bottom: 16px;
}

.feature-item p {
  color: var(--text-light);
}

/* Footer */
.footer {
  background: var(--background-light);
  padding: 60px 0 30px;
  border-top: 1px solid var(--border);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 40px;
}

.footer-brand h3 {
  margin-bottom: 16px;
}

.footer-brand p {
  color: var(--text-light);
  margin-bottom: 20px;
}

.footer-links h4 {
  margin-bottom: 20px;
  font-size: 1rem;
}

.footer-links ul li {
  margin-bottom: 12px;
}

.footer-links a {
  color: var(--text-light);
}

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

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid var(--border);
  color: var(--text-light);
  font-size: 0.9rem;
}

/* Page Header */
.page-header {
  padding: 160px 0 80px;
  text-align: center;
  background: var(--background-light);
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center top, rgba(108, 92, 231, 0.1) 0%, transparent 60%);
}

.page-header h1 {
  position: relative;
  z-index: 1;
  margin-bottom: 16px;
}

.page-header p {
  color: var(--text-light);
  position: relative;
  z-index: 1;
}

/* Content Grid */
.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 24px;
}

.content-item {
  background: var(--background-light);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid var(--border);
  cursor: pointer;
}

.content-item:hover {
  transform: scale(1.02);
  border-color: var(--primary);
}

.content-item .thumb {
  height: 150px;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
}

.content-item .info {
  padding: 16px;
}

.content-item .title {
  font-weight: 600;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.content-item .meta {
  color: var(--text-light);
  font-size: 0.85rem;
  display: flex;
  gap: 16px;
}

/* About Page */
.about-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-image {
  height: 400px;
  background: var(--gradient);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
}

.about-content h2 {
  margin-bottom: 24px;
}

.about-content p {
  color: var(--text-light);
  margin-bottom: 20px;
}

/* Team Grid */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.team-item {
  text-align: center;
}

.team-avatar {
  width: 120px;
  height: 120px;
  margin: 0 auto 20px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
}

.team-item h4 {
  margin-bottom: 8px;
}

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

/* Member Page */
.member-card {
  max-width: 500px;
  margin: 0 auto;
  background: var(--background-light);
  border-radius: var(--radius);
  padding: 40px;
  border: 1px solid var(--border);
}

.member-card h2 {
  text-align: center;
  margin-bottom: 30px;
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
}

.form-group input {
  width: 100%;
  padding: 14px 18px;
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary);
}

.member-benefits {
  margin-top: 40px;
  padding-top: 30px;
  border-top: 1px solid var(--border);
}

.member-benefits h3 {
  margin-bottom: 20px;
  text-align: center;
}

.benefits-list {
  display: grid;
  gap: 16px;
}

.benefit-item {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-light);
}

.benefit-item::before {
  content: '✓';
  color: var(--accent);
  font-weight: bold;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

/* Responsive */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-content {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .about-section {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  h1 { font-size: 2.25rem; }
  h2 { font-size: 1.75rem; }

  .header {
    padding: 0 20px;
  }

  .nav-links {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background: var(--background);
    flex-direction: column;
    padding: 40px;
    gap: 24px;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
  }

  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-toggle {
    display: flex;
  }

  .hero {
    padding: 140px 20px 60px;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .features-grid,
  .team-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

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