/* ========================================
   每日大赛官网 - 主样式文件
   www.km923605.cn
   Modern Minimal High-end Style
   ======================================== */

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

:root {
  --primary: #1a1a2e;
  --accent: #e63946;
  --accent-light: #ff6b6b;
  --gold: #c9a84c;
  --text-dark: #1a1a2e;
  --text-mid: #4a4a6a;
  --text-light: #8888aa;
  --bg-white: #ffffff;
  --bg-light: #f8f8fc;
  --bg-subtle: #f2f2f8;
  --border: #e8e8f0;
  --shadow-sm: 0 2px 8px rgba(26,26,46,0.06);
  --shadow-md: 0 8px 32px rgba(26,26,46,0.10);
  --shadow-lg: 0 20px 60px rgba(26,26,46,0.14);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --font-main: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'WenQuanYi Micro Hei', sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-main);
  color: var(--text-dark);
  background: var(--bg-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-dark);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.8rem); }
h4 { font-size: 1.2rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.9rem; }

p {
  color: var(--text-mid);
  line-height: 1.8;
}

/* ========================================
   LAYOUT UTILITIES
   ======================================== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section-sm {
  padding: 48px 0;
}

.section-lg {
  padding: 120px 0;
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.gap-3 { gap: 24px; }
.gap-4 { gap: 32px; }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* ========================================
   SECTION HEADERS
   ======================================== */

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header .label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.section-header h2 {
  margin-bottom: 16px;
  color: var(--text-dark);
}

.section-header p {
  max-width: 560px;
  margin: 0 auto;
  color: var(--text-light);
  font-size: 1.05rem;
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  outline: none;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 20px rgba(230,57,70,0.3);
}

.btn-primary:hover {
  background: #c0303c;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(230,57,70,0.4);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--text-dark);
  border: 1.5px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn-ghost {
  background: rgba(255,255,255,0.15);
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.4);
  backdrop-filter: blur(8px);
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.25);
  color: #fff;
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 20px;
  font-size: 0.85rem;
}

/* ========================================
   HEADER / NAVIGATION
   ======================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 32px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 900;
  font-size: 1.1rem;
  letter-spacing: -1px;
}

.logo-text {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}

.logo-text span {
  color: var(--accent);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav a {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-mid);
  transition: var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--accent);
  background: rgba(230,57,70,0.06);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  border: none;
  background: none;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: var(--transition);
}

/* ========================================
   SEARCH BAR
   ======================================== */

.search-bar-wrapper {
  background: var(--bg-light);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}

.search-bar {
  display: flex;
  align-items: center;
  max-width: 640px;
  margin: 0 auto;
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: 50px;
  overflow: hidden;
  transition: var(--transition);
}

.search-bar:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(230,57,70,0.1);
}

.search-bar input {
  flex: 1;
  border: none;
  outline: none;
  padding: 10px 20px;
  font-size: 0.9rem;
  font-family: var(--font-main);
  color: var(--text-dark);
  background: transparent;
}

.search-bar input::placeholder {
  color: var(--text-light);
}

.search-bar button {
  background: var(--accent);
  border: none;
  color: #fff;
  padding: 10px 20px;
  cursor: pointer;
  font-size: 0.9rem;
  font-family: var(--font-main);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}

.search-bar button:hover {
  background: #c0303c;
}

/* ========================================
   HERO BANNER
   ======================================== */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, #0f0f23 0%, #1a1a3e 50%, #2d1b69 100%);
  padding-top: 130px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/banner-hero.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.15;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,15,35,0.9) 0%, rgba(26,26,62,0.85) 60%, rgba(45,27,105,0.8) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(230,57,70,0.2);
  border: 1px solid rgba(230,57,70,0.4);
  color: #ff9999;
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 24px;
}

.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--accent-light);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero h1 {
  color: #fff;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.hero h1 em {
  font-style: normal;
  color: var(--accent-light);
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: rgba(255,255,255,0.75);
  margin-bottom: 40px;
  max-width: 560px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  position: relative;
  z-index: 2;
  display: flex;
  gap: 48px;
  margin-top: 80px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.hero-stat-item {
  text-align: center;
}

.hero-stat-item .num {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  display: block;
}

.hero-stat-item .label {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.05em;
}

/* ========================================
   VIDEO CARDS
   ======================================== */

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.video-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
}

.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--bg-subtle);
}

.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.video-card:hover .video-thumb img {
  transform: scale(1.05);
}

.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0);
  transition: var(--transition);
  opacity: 0;
}

.video-card:hover .video-play-btn {
  opacity: 1;
  background: rgba(0,0,0,0.35);
}

.play-icon {
  width: 56px;
  height: 56px;
  background: rgba(255,255,255,0.95);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(0.8);
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.video-card:hover .play-icon {
  transform: scale(1);
}

.play-icon svg {
  width: 22px;
  height: 22px;
  fill: var(--accent);
  margin-left: 3px;
}

.video-duration {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 0.75rem;
  padding: 3px 8px;
  border-radius: 4px;
  font-weight: 500;
}

.video-category-tag {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--accent);
  color: #fff;
  font-size: 0.7rem;
  padding: 3px 10px;
  border-radius: 50px;
  font-weight: 600;
}

.video-info {
  padding: 16px 20px 20px;
}

.video-info h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-dark);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.78rem;
  color: var(--text-light);
}

.video-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ========================================
   TOPIC CARDS
   ======================================== */

.topic-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
}

.topic-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: #fff;
  transition: var(--transition);
  cursor: pointer;
}

.topic-item:hover {
  background: var(--bg-light);
}

.topic-rank {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
}

.topic-rank.rank-1 { background: var(--accent); color: #fff; }
.topic-rank.rank-2 { background: var(--gold); color: #fff; }
.topic-rank.rank-3 { background: #8b8b9a; color: #fff; }
.topic-rank.rank-other { background: var(--bg-subtle); color: var(--text-light); }

.topic-content {
  flex: 1;
  min-width: 0;
}

.topic-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topic-title:hover {
  color: var(--accent);
}

.topic-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.tag {
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 50px;
  background: var(--bg-subtle);
  color: var(--text-light);
  font-weight: 500;
}

.tag-hot {
  background: rgba(230,57,70,0.1);
  color: var(--accent);
}

.tag-new {
  background: rgba(52,199,89,0.1);
  color: #34c759;
}

.tag-video {
  background: rgba(0,122,255,0.1);
  color: #007aff;
}

.topic-stats {
  display: flex;
  gap: 16px;
  flex-shrink: 0;
  font-size: 0.78rem;
  color: var(--text-light);
}

.topic-stats span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ========================================
   CATEGORY CARDS
   ======================================== */

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.category-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent, rgba(230,57,70,0.04));
  opacity: 0;
  transition: var(--transition);
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(230,57,70,0.2);
}

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

.category-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.6rem;
  transition: var(--transition);
}

.category-card:hover .category-icon {
  transform: scale(1.1);
}

.category-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-dark);
}

.category-card p {
  font-size: 0.78rem;
  color: var(--text-light);
  line-height: 1.5;
}

.category-count {
  display: inline-block;
  margin-top: 10px;
  font-size: 0.72rem;
  color: var(--accent);
  font-weight: 600;
}

/* ========================================
   STATS SECTION
   ======================================== */

.stats-section {
  background: linear-gradient(135deg, var(--primary) 0%, #2d1b69 100%);
  color: #fff;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  text-align: center;
}

.stat-item .num {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  color: #fff;
  display: block;
  line-height: 1;
  margin-bottom: 8px;
}

.stat-item .num span {
  color: var(--accent-light);
}

.stat-item .label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.05em;
}

/* ========================================
   TESTIMONIALS
   ======================================== */

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.testimonial-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition);
  position: relative;
}

.testimonial-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 16px;
  right: 24px;
  font-size: 5rem;
  color: var(--bg-subtle);
  font-family: Georgia, serif;
  line-height: 1;
}

.testimonial-stars {
  display: flex;
  gap: 3px;
  margin-bottom: 14px;
  color: var(--gold);
  font-size: 0.9rem;
}

.testimonial-text {
  font-size: 0.92rem;
  color: var(--text-mid);
  line-height: 1.8;
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
}

.author-info .name {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-dark);
}

.author-info .role {
  font-size: 0.78rem;
  color: var(--text-light);
}

/* ========================================
   FAQ SECTION
   ======================================== */

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.open {
  border-color: rgba(230,57,70,0.2);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-dark);
  gap: 16px;
  user-select: none;
}

.faq-question:hover {
  color: var(--accent);
}

.faq-toggle {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition);
  font-size: 1.2rem;
  color: var(--text-light);
}

.faq-item.open .faq-toggle {
  background: var(--accent);
  color: #fff;
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 0.9rem;
  color: var(--text-mid);
  line-height: 1.8;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.faq-item.open .faq-answer {
  max-height: 500px;
}

/* ========================================
   JOIN / CTA SECTION
   ======================================== */

.cta-section {
  background: linear-gradient(135deg, #1a1a2e 0%, #2d1b69 100%);
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at center, rgba(230,57,70,0.1) 0%, transparent 60%);
}

.cta-content {
  position: relative;
  z-index: 1;
}

.cta-section h2 {
  color: #fff;
  margin-bottom: 16px;
}

.cta-section p {
  color: rgba(255,255,255,0.7);
  max-width: 480px;
  margin: 0 auto 36px;
  font-size: 1.05rem;
}

.join-form {
  display: flex;
  gap: 12px;
  max-width: 480px;
  margin: 0 auto;
  flex-wrap: wrap;
  justify-content: center;
}

.join-form input {
  flex: 1;
  min-width: 200px;
  padding: 14px 20px;
  border-radius: 50px;
  border: 1.5px solid rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.1);
  color: #fff;
  font-size: 0.9rem;
  font-family: var(--font-main);
  outline: none;
  transition: var(--transition);
  backdrop-filter: blur(8px);
}

.join-form input::placeholder {
  color: rgba(255,255,255,0.5);
}

.join-form input:focus {
  border-color: rgba(255,255,255,0.5);
  background: rgba(255,255,255,0.15);
}

/* ========================================
   FOOTER
   ======================================== */

.site-footer {
  background: var(--primary);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand .logo-text {
  color: #fff;
  font-size: 1.3rem;
  margin-bottom: 12px;
  display: block;
}

.footer-brand p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.8;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.social-btn {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
  text-decoration: none;
}

.social-btn:hover {
  background: var(--accent);
  color: #fff;
}

.footer-col h5 {
  color: #fff;
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul li a {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: #fff;
}

.footer-bottom {
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.35);
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom a {
  color: rgba(255,255,255,0.35);
}

.footer-bottom a:hover {
  color: rgba(255,255,255,0.7);
}

/* ========================================
   BREADCRUMB
   ======================================== */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text-light);
  padding: 12px 0;
}

.breadcrumb a {
  color: var(--text-light);
  transition: var(--transition);
}

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

.breadcrumb .sep {
  color: var(--border);
}

.breadcrumb .current {
  color: var(--text-dark);
  font-weight: 500;
}

/* ========================================
   PAGE HEADER (inner pages)
   ======================================== */

.page-header {
  background: linear-gradient(135deg, var(--primary) 0%, #2d1b69 100%);
  padding: 100px 0 60px;
  color: #fff;
}

.page-header h1 {
  color: #fff;
  margin-bottom: 12px;
}

.page-header p {
  color: rgba(255,255,255,0.7);
  font-size: 1.05rem;
}

/* ========================================
   SIDEBAR
   ======================================== */

.content-with-sidebar {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.sidebar-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text-dark);
}

/* ========================================
   PAGINATION
   ======================================== */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 48px;
}

.page-btn {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 500;
  border: 1.5px solid var(--border);
  color: var(--text-mid);
  transition: var(--transition);
  cursor: pointer;
  background: #fff;
  text-decoration: none;
}

.page-btn:hover,
.page-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ========================================
   NOTICE / ALERT
   ======================================== */

.notice-bar {
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  color: #fff;
  padding: 10px 0;
  font-size: 0.85rem;
  text-align: center;
}

/* ========================================
   MOBILE MENU
   ======================================== */

.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.5);
  z-index: 999;
  backdrop-filter: blur(4px);
}

.mobile-menu.open {
  display: block;
}

.mobile-menu-inner {
  position: absolute;
  top: 0;
  right: 0;
  width: 280px;
  height: 100%;
  background: #fff;
  padding: 80px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow-y: auto;
}

.mobile-menu-inner a {
  padding: 14px 16px;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-mid);
  transition: var(--transition);
  display: block;
}

.mobile-menu-inner a:hover {
  color: var(--accent);
  background: rgba(230,57,70,0.06);
}

/* ========================================
   SCROLL TO TOP
   ======================================== */

.scroll-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  opacity: 0;
  pointer-events: none;
  z-index: 100;
  font-size: 1.2rem;
}

.scroll-top.visible {
  opacity: 1;
  pointer-events: all;
}

.scroll-top:hover {
  background: #c0303c;
  transform: translateY(-3px);
}

/* ========================================
   ANIMATIONS
   ======================================== */

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

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.animate-fade-up {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-fade {
  animation: fadeIn 0.6s ease forwards;
}

/* ========================================
   RESPONSIVE - TABLET
   ======================================== */

@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  .content-with-sidebar {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .section-lg { padding: 80px 0; }

  .main-nav { display: none; }
  .header-actions .btn { display: none; }
  .menu-toggle { display: flex; }

  .hero {
    min-height: auto;
    padding: 140px 0 80px;
  }

  .hero-stats {
    gap: 24px;
    flex-wrap: wrap;
    margin-top: 48px;
  }

  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

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

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

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

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

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

  .join-form {
    flex-direction: column;
  }

  .join-form input {
    min-width: unset;
    width: 100%;
  }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero h1 { font-size: 2rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mt-5 { margin-top: 48px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.mb-5 { margin-bottom: 48px; }

.hidden { display: none !important; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* Lazy load images */
img[loading="lazy"] {
  opacity: 0;
  transition: opacity 0.4s ease;
}

img[loading="lazy"].loaded {
  opacity: 1;
}