/* =====================================================
   开云体育官网 - 主样式文件
   kaiyun.com | 开云体育专业体育赛事投注平台
   ===================================================== */

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

:root {
  --color-primary: #0a0a0a;
  --color-secondary: #FFD700;
  --color-accent: #E50914;
  --color-bg: #0d0d0d;
  --color-bg2: #141414;
  --color-bg3: #1a1a1a;
  --color-text: #f0f0f0;
  --color-text-muted: #888;
  --color-border: #2a2a2a;
  --font-main: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  --transition: all 0.3s ease;
  --radius: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-main);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

/* ---- Utility ---- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 90px 0; }
.section-dark { background: var(--color-bg2); }
.section-darker { background: var(--color-bg3); }
.text-gold { color: var(--color-secondary); }
.text-red { color: var(--color-accent); }
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }

.section-header { text-align: center; margin-bottom: 60px; }
.section-header h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}
.section-header h2 span { color: var(--color-secondary); }
.section-header p {
  font-size: 1rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto;
}
.section-header .update-time {
  font-size: 0.78rem;
  color: #555;
  margin-top: 8px;
}

.btn {
  display: inline-block;
  padding: 12px 32px;
  border-radius: 4px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  letter-spacing: 0.05em;
}
.btn-primary {
  background: var(--color-secondary);
  color: #000;
}
.btn-primary:hover { background: #e6c200; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(255,215,0,0.3); }
.btn-outline {
  background: transparent;
  color: var(--color-secondary);
  border: 1.5px solid var(--color-secondary);
}
.btn-outline:hover { background: var(--color-secondary); color: #000; }
.btn-red { background: var(--color-accent); color: #fff; }
.btn-red:hover { background: #c0070f; transform: translateY(-2px); }

/* ---- Header & Navigation ---- */
#header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(10,10,10,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
}
#header.scrolled { background: rgba(10,10,10,0.99); box-shadow: 0 2px 20px rgba(0,0,0,0.5); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 0.05em;
}
.logo-icon {
  width: 42px; height: 42px;
  background: var(--color-secondary);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  font-weight: 900;
  color: #000;
  flex-shrink: 0;
}
.logo-text { color: var(--color-text); }
.logo-text span { color: var(--color-secondary); }

nav.main-nav { display: flex; align-items: center; gap: 4px; }
nav.main-nav a {
  padding: 8px 14px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: 4px;
  white-space: nowrap;
}
nav.main-nav a:hover, nav.main-nav a.active { color: var(--color-secondary); }

.header-cta { display: flex; align-items: center; gap: 10px; }
.header-cta .btn { padding: 8px 20px; font-size: 0.85rem; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--color-text);
  transition: var(--transition);
}

/* ---- Search Bar (below nav) ---- */
#search-bar-wrap {
  background: var(--color-bg2);
  border-bottom: 1px solid var(--color-border);
  padding: 8px 0;
  display: none;
}
#search-bar-wrap.show { display: block; }
.search-inner {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 700px;
  margin: 0 auto;
  padding: 0 20px;
}
.search-inner input {
  flex: 1;
  background: var(--color-bg3);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 9px 16px;
  color: var(--color-text);
  font-size: 0.9rem;
  font-family: var(--font-main);
  outline: none;
  transition: var(--transition);
}
.search-inner input:focus { border-color: var(--color-secondary); }
.search-inner input::placeholder { color: #555; }
.search-inner button {
  background: var(--color-secondary);
  color: #000;
  border: none;
  border-radius: 4px;
  padding: 9px 20px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-main);
  transition: var(--transition);
}
.search-inner button:hover { background: #e6c200; }
.search-close {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 1.2rem;
  padding: 4px 8px;
  transition: var(--transition);
}
.search-close:hover { color: var(--color-text); }

/* ---- Hero Banner ---- */
#hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-top: 70px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url('../images/banner-hero.jpg') 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(1.12); }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.5) 50%, rgba(0,0,0,0.7) 100%);
}

.hero-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}
.particle {
  position: absolute;
  width: 2px; height: 2px;
  background: var(--color-secondary);
  border-radius: 50%;
  animation: particleFloat linear infinite;
  opacity: 0;
}
@keyframes particleFloat {
  0% { transform: translateY(100vh) translateX(0); opacity: 0; }
  10% { opacity: 0.6; }
  90% { opacity: 0.6; }
  100% { transform: translateY(-100px) translateX(30px); opacity: 0; }
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
  padding: 0 20px;
}
.hero-badge {
  display: inline-block;
  background: rgba(255,215,0,0.15);
  border: 1px solid rgba(255,215,0,0.4);
  color: var(--color-secondary);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  padding: 5px 16px;
  border-radius: 20px;
  margin-bottom: 24px;
  text-transform: uppercase;
}
.hero-content h1 {
  font-size: clamp(2.2rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: 0.02em;
  margin-bottom: 20px;
}
.hero-content h1 .gold { color: var(--color-secondary); }
.hero-content h1 .red { color: var(--color-accent); }
.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: rgba(240,240,240,0.8);
  margin-bottom: 36px;
  max-width: 650px;
  margin-left: auto;
  margin-right: auto;
}
.hero-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 36px;
}
.hero-keywords span {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 0.82rem;
  color: rgba(240,240,240,0.75);
}
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.hero-scroll {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,0.4);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  animation: scrollBounce 2s ease-in-out infinite;
}
.hero-scroll::after {
  content: '';
  display: block;
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,215,0,0.5), transparent);
}
@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ---- Stats Bar ---- */
#stats-bar {
  background: var(--color-secondary);
  padding: 20px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.stat-item { color: #000; }
.stat-num {
  font-size: 2rem;
  font-weight: 900;
  line-height: 1;
  display: block;
}
.stat-label { font-size: 0.82rem; font-weight: 600; opacity: 0.7; margin-top: 4px; }

/* ---- About / Brand Story ---- */
#about .about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
#about .about-img {
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
}
#about .about-img img {
  width: 100%;
  border-radius: var(--radius);
  transition: transform 0.5s ease;
}
#about .about-img:hover img { transform: scale(1.03); }
#about .about-img-badge {
  position: absolute;
  bottom: 20px;
  right: 20px;
  background: var(--color-secondary);
  color: #000;
  padding: 10px 18px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.9rem;
}
#about .about-text h2 {
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.3;
}
#about .about-text p {
  color: var(--color-text-muted);
  margin-bottom: 16px;
  font-size: 0.95rem;
}
.about-features { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 28px 0; }
.about-feature {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.about-feature-icon {
  width: 40px; height: 40px;
  background: rgba(255,215,0,0.1);
  border: 1px solid rgba(255,215,0,0.3);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.about-feature-text h4 { font-size: 0.9rem; font-weight: 600; margin-bottom: 4px; }
.about-feature-text p { font-size: 0.82rem; color: var(--color-text-muted); margin: 0; }

/* ---- Video Section ---- */
#videos { background: var(--color-bg); }
.video-filter {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.filter-btn {
  padding: 7px 20px;
  border-radius: 20px;
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  font-family: var(--font-main);
  transition: var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  background: var(--color-secondary);
  color: #000;
  border-color: var(--color-secondary);
  font-weight: 600;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.video-card {
  background: var(--color-bg2);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: var(--transition);
  cursor: pointer;
  position: relative;
}
.video-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.5);
  border-color: rgba(255,215,0,0.3);
}
.video-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.08); }
.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.4);
  opacity: 0;
  transition: var(--transition);
}
.video-card:hover .video-play-btn { opacity: 1; }
.play-circle {
  width: 56px; height: 56px;
  background: rgba(255,215,0,0.9);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  transform: scale(0.8);
  transition: var(--transition);
}
.video-card:hover .play-circle { transform: scale(1); }
.play-circle svg { width: 22px; height: 22px; fill: #000; margin-left: 3px; }
.video-badge {
  position: absolute;
  top: 10px; left: 10px;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 3px;
  letter-spacing: 0.05em;
}
.video-duration {
  position: absolute;
  bottom: 8px; right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 0.75rem;
  padding: 2px 7px;
  border-radius: 3px;
}
.video-info { padding: 14px; }
.video-category {
  font-size: 0.72rem;
  color: var(--color-secondary);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.video-info h3 {
  font-size: 0.9rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* Video Modal */
.video-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0,0,0,0.92);
  align-items: center;
  justify-content: center;
}
.video-modal.open { display: flex; }
.modal-inner {
  position: relative;
  width: 90%;
  max-width: 900px;
}
.modal-close {
  position: absolute;
  top: -40px; right: 0;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.8rem;
  cursor: pointer;
  line-height: 1;
}
.modal-video-wrap {
  position: relative;
  padding-top: 56.25%;
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
}
.modal-video-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  gap: 16px;
}
.modal-video-placeholder .big-play {
  width: 80px; height: 80px;
  background: var(--color-secondary);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}
.modal-video-placeholder .big-play svg { width: 32px; height: 32px; fill: #000; margin-left: 4px; }
.modal-video-placeholder p { font-size: 1rem; }

/* ---- Services / Business ---- */
#services .services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  background: var(--color-bg3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--color-secondary);
  transform: scaleX(0);
  transition: var(--transition);
}
.service-card:hover::before { transform: scaleX(1); }
.service-card:hover {
  border-color: rgba(255,215,0,0.2);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.service-icon {
  font-size: 2.2rem;
  margin-bottom: 18px;
  display: block;
}
.service-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-text);
}
.service-card p { font-size: 0.88rem; color: var(--color-text-muted); line-height: 1.7; }
.service-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.service-tag {
  font-size: 0.72rem;
  background: rgba(255,215,0,0.08);
  color: var(--color-secondary);
  border: 1px solid rgba(255,215,0,0.2);
  padding: 3px 10px;
  border-radius: 12px;
}

/* ---- Projects ---- */
#projects .projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.project-card {
  background: var(--color-bg3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.project-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
  border-color: rgba(255,215,0,0.25);
}
.project-img {
  aspect-ratio: 16/9;
  overflow: hidden;
}
.project-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.project-card:hover .project-img img { transform: scale(1.06); }
.project-body { padding: 20px; }
.project-tag {
  font-size: 0.72rem;
  color: var(--color-secondary);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.project-body h3 { font-size: 1rem; font-weight: 700; margin-bottom: 10px; }
.project-body p { font-size: 0.85rem; color: var(--color-text-muted); }

/* ---- Team ---- */
#team .team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
.team-card {
  text-align: center;
  background: var(--color-bg3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 36px 24px;
  transition: var(--transition);
}
.team-card:hover {
  border-color: rgba(255,215,0,0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.team-avatar {
  width: 100px; height: 100px;
  border-radius: 50%;
  overflow: hidden;
  margin: 0 auto 18px;
  border: 3px solid var(--color-secondary);
}
.team-avatar img { width: 100%; height: 100%; object-fit: cover; }
.team-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 6px; }
.team-card .team-title {
  font-size: 0.82rem;
  color: var(--color-secondary);
  font-weight: 600;
  margin-bottom: 12px;
}
.team-card p { font-size: 0.85rem; color: var(--color-text-muted); }

/* ---- Media ---- */
#media .media-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.media-card {
  background: var(--color-bg3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.media-card:hover {
  border-color: rgba(255,215,0,0.25);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.media-source {
  display: flex;
  align-items: center;
  gap: 10px;
}
.media-logo {
  width: 36px; height: 36px;
  background: var(--color-secondary);
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.7rem;
  font-weight: 900;
  color: #000;
  flex-shrink: 0;
}
.media-name { font-size: 0.82rem; font-weight: 600; color: var(--color-text-muted); }
.media-card h3 { font-size: 0.95rem; font-weight: 600; line-height: 1.5; }
.media-date { font-size: 0.78rem; color: #555; }

/* ---- Reviews ---- */
#reviews .reviews-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.review-card {
  background: var(--color-bg3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
}
.review-card:hover {
  border-color: rgba(255,215,0,0.2);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.review-stars { color: var(--color-secondary); font-size: 0.9rem; margin-bottom: 12px; letter-spacing: 2px; }
.review-card p { font-size: 0.88rem; color: var(--color-text-muted); line-height: 1.7; margin-bottom: 16px; font-style: italic; }
.review-user { display: flex; align-items: center; gap: 10px; }
.review-avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--color-secondary);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: #000;
  flex-shrink: 0;
}
.review-user-info .name { font-size: 0.85rem; font-weight: 600; }
.review-user-info .tag { font-size: 0.75rem; color: #555; }

/* ---- FAQ ---- */
#faq .faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.open { border-color: rgba(255,215,0,0.3); }
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 22px;
  cursor: pointer;
  background: var(--color-bg2);
  transition: var(--transition);
  gap: 16px;
}
.faq-question:hover { background: var(--color-bg3); }
.faq-question h3 { font-size: 0.95rem; font-weight: 600; line-height: 1.5; }
.faq-icon {
  width: 24px; height: 24px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  color: var(--color-secondary);
  flex-shrink: 0;
  transition: var(--transition);
}
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--color-secondary); color: #000; border-color: var(--color-secondary); }
.faq-answer {
  display: none;
  padding: 0 22px 18px;
  background: var(--color-bg2);
}
.faq-item.open .faq-answer { display: block; }
.faq-answer p { font-size: 0.88rem; color: var(--color-text-muted); line-height: 1.8; }

/* ---- Cooperation ---- */
#cooperation {
  background: url('../images/cooperation-bg.jpg') center/cover no-repeat;
  position: relative;
}
#cooperation::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.82);
}
#cooperation .container { position: relative; z-index: 1; text-align: center; }
#cooperation h2 { font-size: clamp(1.8rem, 3vw, 2.8rem); font-weight: 800; margin-bottom: 16px; }
#cooperation p { color: var(--color-text-muted); max-width: 600px; margin: 0 auto 36px; }
.partners-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 40px;
}
.partner-badge {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 6px;
  padding: 12px 24px;
  font-size: 0.9rem;
  font-weight: 600;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}
.partner-badge:hover { border-color: var(--color-secondary); color: var(--color-secondary); }

/* ---- Contact ---- */
#contact .contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 50px;
  align-items: start;
}
.contact-info h2 { font-size: 1.8rem; font-weight: 800; margin-bottom: 20px; }
.contact-info p { color: var(--color-text-muted); font-size: 0.9rem; margin-bottom: 30px; }
.contact-items { display: flex; flex-direction: column; gap: 18px; }
.contact-item { display: flex; align-items: flex-start; gap: 14px; }
.contact-item-icon {
  width: 44px; height: 44px;
  background: rgba(255,215,0,0.1);
  border: 1px solid rgba(255,215,0,0.3);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.contact-item-text h4 { font-size: 0.85rem; font-weight: 600; margin-bottom: 4px; }
.contact-item-text p { font-size: 0.88rem; color: var(--color-text-muted); margin: 0; }
.contact-form { background: var(--color-bg2); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 36px; }
.contact-form h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.form-group label { font-size: 0.82rem; font-weight: 600; color: var(--color-text-muted); }
.form-group input, .form-group textarea, .form-group select {
  background: var(--color-bg3);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 10px 14px;
  color: var(--color-text);
  font-size: 0.9rem;
  font-family: var(--font-main);
  outline: none;
  transition: var(--transition);
  width: 100%;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { border-color: var(--color-secondary); }
.form-group textarea { resize: vertical; min-height: 100px; }
.form-group select option { background: var(--color-bg3); }

/* ---- Footer ---- */
#footer {
  background: var(--color-primary);
  border-top: 1px solid var(--color-border);
  padding: 60px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { font-size: 0.85rem; color: var(--color-text-muted); line-height: 1.8; margin-bottom: 20px; }
.footer-social { display: flex; gap: 10px; }
.social-btn {
  width: 36px; height: 36px;
  background: var(--color-bg2);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-text-muted);
  transition: var(--transition);
  cursor: pointer;
}
.social-btn:hover { background: var(--color-secondary); color: #000; border-color: var(--color-secondary); }
.footer-col h4 { font-size: 0.9rem; font-weight: 700; margin-bottom: 18px; color: var(--color-text); }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a { font-size: 0.85rem; color: var(--color-text-muted); transition: var(--transition); }
.footer-col ul li a:hover { color: var(--color-secondary); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p { font-size: 0.8rem; color: #555; }
.footer-bottom a { color: #555; }
.footer-bottom a:hover { color: var(--color-secondary); }
.footer-links { display: flex; gap: 20px; }

/* ---- Back to Top ---- */
#back-top {
  position: fixed;
  bottom: 30px; right: 30px;
  width: 44px; height: 44px;
  background: var(--color-secondary);
  color: #000;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1.1rem;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 999;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(255,215,0,0.3);
}
#back-top.show { display: flex; }
#back-top:hover { background: #e6c200; transform: translateY(-3px); }

/* ---- Mobile Menu ---- */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(10,10,10,0.98);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text-muted);
  transition: var(--transition);
}
.mobile-menu a:hover { color: var(--color-secondary); }
.mobile-menu-close {
  position: absolute;
  top: 20px; right: 20px;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 1.8rem;
  cursor: pointer;
}

/* ---- Animations ---- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }
.fade-up:nth-child(2) { transition-delay: 0.1s; }
.fade-up:nth-child(3) { transition-delay: 0.2s; }
.fade-up:nth-child(4) { transition-delay: 0.3s; }

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .video-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  nav.main-nav, .header-cta { display: none; }
  .hamburger { display: flex; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  #about .about-grid { grid-template-columns: 1fr; }
  .about-features { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  #services .services-grid { grid-template-columns: 1fr; }
  #projects .projects-grid { grid-template-columns: 1fr; }
  #team .team-grid { grid-template-columns: 1fr 1fr; }
  #media .media-grid { grid-template-columns: 1fr; }
  #reviews .reviews-grid { grid-template-columns: 1fr 1fr; }
  #contact .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr; }
  #team .team-grid { grid-template-columns: 1fr; }
  #reviews .reviews-grid { grid-template-columns: 1fr; }
  .hero-content h1 { font-size: 2rem; }
}