@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Noto+Sans+JP:wght@300;400;500;700&display=swap');

/* --- CSS Variables & Theme Definitions --- */
:root {
  /* Light Theme Colors */
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-dark: #212529;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-white: #ffffff;

  --accent-primary: #6366f1;
  /* Indigo */
  --accent-secondary: #ec4899;
  /* Pink */
  --accent-glow: rgba(99, 102, 241, 0.15);

  --border-color: #e2e8f0;
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(226, 232, 240, 0.8);

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-glow: 0 0 15px rgba(99, 102, 241, 0.2);

  --font-sans: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --transition-speed: 0.3s;

  --giga-opacity: 0.12;
  --giga-filter: none;
}

[data-theme="dark"] {
  /* Dark Theme Colors */
  --bg-primary: #0b0f19;
  --bg-secondary: #131a2e;
  --bg-tertiary: #1b2541;
  --bg-dark: #212529;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-white: #ffffff;

  --accent-primary: #818cf8;
  /* Violet-ish Indigo */
  --accent-secondary: #f472b6;
  /* Soft Pink */
  --accent-glow: rgba(129, 140, 248, 0.25);

  --border-color: #223056;
  --glass-bg: rgba(19, 26, 46, 0.75);
  --glass-border: rgba(34, 48, 86, 0.8);

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 15px 25px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 20px rgba(129, 140, 248, 0.3);

  --giga-opacity: 0.18;
  --giga-filter: invert(1) brightness(1.5) contrast(1.1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--transition-speed), color var(--transition-speed);
}

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

button,
input,
select {
  font-family: inherit;
  font-size: inherit;
}

ul {
  list-style: none;
}

/* --- Layout Utilities --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 6rem 0;
}

.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 9999px;
  text-transform: uppercase;
}

.badge-primary {
  background-color: var(--accent-glow);
  color: var(--accent-primary);
  border: 1px solid var(--accent-primary);
}

.badge-secondary {
  background-color: rgba(236, 72, 153, 0.1);
  color: var(--accent-secondary);
  border: 1px solid var(--accent-secondary);
}

/* --- Header & Navigation --- */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
}

.logo-icon {
  width: 2rem;
  height: 2rem;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.1rem;
}

.logo-text span {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-menu {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-link {
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 0.25rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  transition: width var(--transition-speed);
}

.nav-link:hover {
  color: var(--text-primary);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Theme Toggle Button */
.theme-toggle-btn {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-speed);
  position: relative;
  overflow: hidden;
}

.theme-toggle-btn:hover {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow);
}

.theme-toggle-btn svg {
  width: 1.25rem;
  height: 1.25rem;
  transition: transform 0.5s ease;
}

[data-theme="dark"] .theme-toggle-btn .sun-icon {
  display: block;
}

[data-theme="dark"] .theme-toggle-btn .moon-icon {
  display: none;
}

.theme-toggle-btn .sun-icon {
  display: none;
}

.theme-toggle-btn .moon-icon {
  display: block;
}

/* Primary Action Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-speed);
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow), var(--shadow-lg);
  opacity: 0.95;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.btn-outline:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--text-secondary);
}

.btn-sm {
    margin: 0.25rem .125rem;
    padding: 0.25rem .5rem;
    font-size: 0.875rem;
}

.btn-dark {
  background-color: var(--bg-dark);
  border: 1px solid var(--border-color);
  color: var(--text-white);
}

.btn-dark:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow), var(--shadow-lg);
  opacity: 0.95;
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: radial-gradient(circle at 10% 20%, var(--accent-glow) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(236, 72, 153, 0.08) 0%, transparent 45%);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
}

.hero-content {
  max-width: 650px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.hero-tag-pulse {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background-color: #10b981;
  box-shadow: 0 0 8px #10b981;
  animation: pulse 2s infinite;
}

.hero-title {
  font-size: 3.3rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.hero-title span {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  margin-bottom: 3rem;
}

/* Statistics Counters */
.hero-stats {
  display: flex;
  gap: 2.5rem;
  padding-top: 3rem;
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.stat-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
  opacity: 0.8;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-giga-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('https://nf1.jpnkn.com/assets/splash-30a.svg');
  background-repeat: no-repeat;
  background-position: left 8% bottom 12%;
  background-size: 70%;
  opacity: var(--giga-opacity);
  filter: var(--giga-filter);
  pointer-events: none;
  z-index: 0;
  transition: opacity var(--transition-speed), filter var(--transition-speed);
}

@media (max-width: 1024px) {
  .hero-giga-bg {
    background-position: left 5% bottom 12%;
    background-size: 70%;
  }
}

@media (max-width: 768px) {
  .hero-giga-bg {
    background-position: center 25%;
    background-size: 140%;
  }
}

@media (max-width: 480px) {
  .hero-giga-bg {
    background-position: center 20%;
    background-size: 160%;
  }
}


.hero-card-stack {
  position: relative;
  width: 100%;
  max-width: 400px;
  height: 700px;
  z-index: 2;
  transform: translateY(-60px);
}

.hero-card {
  position: absolute;
  width: 100%;
  padding: 1.5rem;
  border-radius: 1rem;
  background-color: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-lg);
  transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1),
    opacity 0.6s ease,
    box-shadow 0.6s ease;
  will-change: transform, opacity, box-shadow;
}

.card-1 {
  top: 90px;
  right: -20px;
  z-index: 4;
  transform: rotate(-1deg);
}

.card-2 {
  top: 300px;
  right: -15px;
  z-index: 3;
  transform: rotate(3deg);
  opacity: 0.95;
}

.card-3 {
  top: 400px;
  right: -30px;
  z-index: 2;
  transform: rotate(-2deg);
  opacity: 0.9;
}

.card-4 {
  top: 530px;
  right: -45px;
  z-index: 1;
  transform: rotate(1deg);
  opacity: 0.85;
}

.hero-card-stack:hover .card-1 {
  transform: translate(-30px, -40px) rotate(-4deg) scale(1.02);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25), var(--shadow-glow);
}

.hero-card-stack:hover .card-2 {
  transform: translate(10px, -15px) rotate(3.5deg) scale(1.01);
  opacity: 1;
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.2);
}

.hero-card-stack:hover .card-3 {
  transform: translate(5px, 20px) rotate(-3deg);
  opacity: 1;
  box-shadow: 0 15px 30px -8px rgba(0, 0, 0, 0.15);
}

.hero-card-stack:hover .card-4 {
  transform: translate(0px, 60px) rotate(2.5deg);
  opacity: 1;
  box-shadow: 0 10px 20px -5px rgba(0, 0, 0, 0.12);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.75rem;
}

.card-author {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.author-avatar {
  width: 2rem;
  height: 2rem;
  background-color: var(--border-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.author-info {
  display: flex;
  flex-direction: column;
}

.author-name {
  font-size: 0.875rem;
  font-weight: 600;
}

.card-time {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.card-body {
  font-size: 0.95rem;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.card-footer {
  display: flex;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.card-meta-item {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* --- Interactive Boards Explorer --- */
.explorer-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 3rem auto;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.section-subtitle {
  color: var(--text-secondary);
}

.search-filter-wrapper {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 1.5rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-md);
}

.search-box {
  position: relative;
  margin-bottom: 1.5rem;
}

.search-icon {
  position: absolute;
  left: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  width: 1.25rem;
  height: 1.25rem;
}

.search-input {
  width: 100%;
  padding: 1rem 1rem 1rem 3rem;
  border-radius: 0.5rem;
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  outline: none;
  transition: all var(--transition-speed);
}

.search-input:focus {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow);
}

.filter-categories {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.filter-btn {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.5rem 1.25rem;
  border-radius: 9999px;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--transition-speed);
}

.filter-btn:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.filter-btn.active {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white;
  border-color: transparent;
  box-shadow: var(--shadow-sm);
}

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

.board-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 1.5rem;
  cursor: pointer;
  transition: all var(--transition-speed);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
}

.board-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

.board-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.board-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.board-category {
  font-size: 0.75rem;
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

.board-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.board-stats {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
  padding-top: 0.75rem;
}

.board-stat-item {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.board-stat-pulse {
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background-color: #10b981;
  display: inline-block;
}

/* --- Live Feed Simulator --- */
.live-feed-section {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.live-feed-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 4rem;
  align-items: center;
}

.live-feed-desc {
  max-width: 500px;
}

.live-feed-container {
  height: 400px;
  overflow-y: hidden;
  position: relative;
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.05);
}

/* Fade layers on scroll limits */
.live-feed-container::before,
.live-feed-container::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 3rem;
  pointer-events: none;
  z-index: 2;
}

.live-feed-container::before {
  top: 0;
  background: linear-gradient(to bottom, var(--bg-primary), transparent);
}

.live-feed-container::after {
  bottom: 0;
  background: linear-gradient(to top, var(--bg-primary), transparent);
}

.live-feed-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.live-item {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  padding: 1rem;
  box-shadow: var(--shadow-sm);
  animation: slideUpNew 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  position: relative;
}

.live-item.new-post-glow {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow);
}

.live-item-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  font-size: 0.8rem;
}

.live-item-title {
  font-weight: 600;
  color: var(--accent-primary);
}

.live-item-meta {
  color: var(--text-muted);
}

.live-item-body {
  font-size: 0.875rem;
  color: var(--text-primary);
}

/* --- Features Section --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.feature-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 2.5rem 2rem;
  border-radius: 1rem;
  text-align: center;
  transition: all var(--transition-speed);
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-secondary);
  box-shadow: 0 10px 30px -10px rgba(236, 72, 153, 0.15);
}

.feature-icon-wrapper {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 0.75rem;
  background-color: var(--accent-glow);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem auto;
}

.feature-card:nth-child(2) .feature-icon-wrapper {
  background-color: rgba(236, 72, 153, 0.1);
  color: var(--accent-secondary);
}

.feature-card:nth-child(3) .feature-icon-wrapper {
  background-color: rgba(16, 185, 129, 0.1);
  color: #10b981;
}

.feature-icon-wrapper svg {
  width: 1.75rem;
  height: 1.75rem;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.feature-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* --- FAQ & Rules Section --- */
.faq-rules-grid {
  display: grid;
  grid-template-columns: 1fr;
  max-width: 800px;
  margin: 0 auto;
  gap: 1.5rem;
}

.faq-item {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  overflow: hidden;
  transition: all var(--transition-speed);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
}

.faq-question:hover {
  background-color: var(--bg-tertiary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  padding: 0 1.5rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
  transition: all var(--transition-speed) ease-out;
  border-top: 0px solid transparent;
}

.faq-item.active {
  border-color: var(--accent-primary);
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border-color);
}

.faq-icon {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--text-secondary);
  transition: transform var(--transition-speed);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  color: var(--accent-primary);
}

/* --- Footer --- */
footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem 0;
  color: var(--text-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-logo {
  margin-bottom: 1rem;
}

.footer-about-text {
  font-size: 0.9rem;
  max-width: 300px;
  margin-bottom: 1rem;
}

.footer-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-link {
  font-size: 0.9rem;
}

.footer-link:hover {
  color: var(--accent-primary);
}

/* Footer bottom and provider links styling */
.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-copyright {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  align-items: flex-start;
}

.footer-provider-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.8rem;
  transition: color var(--transition-speed);
}

.footer-provider-link:hover {
  color: var(--accent-primary) !important;
}

.footer-provider-link svg {
  width: 1.1rem;
  height: 1.1rem;
  fill: currentColor;
  transition: fill var(--transition-speed);
}

/* --- Animations --- */
@keyframes pulse {

  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }

  50% {
    transform: scale(1.2);
    opacity: 0.6;
  }
}

@keyframes slideUpNew {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- Responsive Styles --- */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 3rem;
  }

  .hero-grid {
    gap: 2rem;
  }

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

@media (max-width: 768px) {
  .section {
    padding: 4rem 0;
  }

  .hero {
    min-height: auto;
    padding-top: 8rem;
    padding-bottom: 4rem;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .hero-visual {
    order: 1;
    width: 100%;
    overflow: hidden;
  }

  .hero-card-stack {
    max-width: 100%;
    width: 100%;
    height: auto;
    display: flex;
    flex-direction: row;
    gap: 1rem;
    overflow-x: auto;
    padding: 1.5rem 0.5rem;
    transform: none;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .hero-card-stack::-webkit-scrollbar {
    display: none;
  }

  .hero-card {
    position: relative;
    top: auto !important;
    right: auto !important;
    left: auto !important;
    transform: none !important;
    opacity: 1 !important;
    width: 85vw !important;
    max-width: 320px;
    flex-shrink: 0;
    scroll-snap-align: center;
    box-shadow: var(--shadow-md);
  }

  .hero-card-stack:hover .hero-card {
    transform: none !important;
  }

  .live-feed-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .nav-menu {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 4.5rem;
    left: 0;
    width: 100%;
    height: 0;
    overflow: hidden;
    background-color: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 0px solid var(--glass-border);
    transition: height 0.4s cubic-bezier(0.16, 1, 0.3, 1),
                border-bottom 0.4s ease,
                padding 0.4s ease;
    padding: 0 2rem;
    gap: 1.5rem;
    align-items: center;
    justify-content: flex-start;
    z-index: 999;
  }

  .nav-menu.active {
    height: calc(100vh - 4.5rem);
    border-bottom: 1px solid var(--glass-border);
    padding: 3rem 2rem;
    overflow-y: auto;
  }

  .nav-menu .nav-link {
    font-size: 1.25rem;
    width: 100%;
    text-align: center;
    padding: 0.75rem 0;
    opacity: 0;
    transform: translateY(-20px);
    transition: opacity 0.3s ease, transform 0.3s ease;
  }

  .nav-menu.active .nav-link {
    opacity: 1;
    transform: translateY(0);
  }

  /* Fade-in animation delays for links */
  .nav-menu.active .nav-link:nth-child(1) { transition-delay: 0.05s; }
  .nav-menu.active .nav-link:nth-child(2) { transition-delay: 0.1s; }
  .nav-menu.active .nav-link:nth-child(3) { transition-delay: 0.15s; }
  .nav-menu.active .nav-link:nth-child(4) { transition-delay: 0.2s; }

  .mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
  }

  .mobile-menu-btn:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
  }

  .mobile-menu-btn svg.burger-icon {
    display: block;
    width: 1.25rem;
    height: 1.25rem;
  }

  .mobile-menu-btn svg.close-icon {
    display: none;
    width: 1.25rem;
    height: 1.25rem;
  }

  .mobile-menu-btn.active svg.burger-icon {
    display: none;
  }

  .mobile-menu-btn.active svg.close-icon {
    display: block;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

  .hero-title {
    font-size: 2.25rem;
  }

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

  .hero-stats {
    flex-direction: column;
    gap: 1rem;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .footer-copyright {
    align-items: center;
  }
}

/* Sponsor Section Layout Optimization (90% width on Desktop / 5% margin) */
#sponsor .container {
  max-width: 100%;
  width: 100%;
}

@media (min-width: 1024px) {
  #sponsor .container {
    max-width: 90%;
    width: 90%;
  }
}



/* --- Supporter (Sponsor) List Styles --- */
.supporters-container {
  margin-top: 4rem;
  padding-top: 3rem;
  border-top: 1px dashed var(--border-color);
  text-align: center;
}

.supporters-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 2rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.supporters-title::before,
.supporters-title::after {
  content: '';
  display: block;
  width: 3rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-color));
}

.supporters-title::after {
  background: linear-gradient(90deg, var(--border-color), transparent);
}

/* Platinum Sponsors */
.sponsors-platinum {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 1rem;
  margin-bottom: 3.5rem;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

.sponsor-card-platinum {
  width: 100%;
  background-color: var(--glass-bg);
  border: 1px solid rgba(236, 72, 153, 0.3);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 1.25rem;
  border-radius: 1rem;
  box-shadow: var(--shadow-lg), 0 0 15px rgba(236, 72, 153, 0.05);
  transition: transform var(--transition-speed), box-shadow var(--transition-speed), border-color var(--transition-speed);
}

.sponsor-card-platinum:hover {
  transform: translateY(-5px) scale(1.01);
  border-color: var(--accent-secondary);
  box-shadow: var(--shadow-lg), 0 0 25px rgba(236, 72, 153, 0.2);
}

.sponsor-platinum-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0;
}

.sponsor-platinum-avatar {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-secondary), #f43f5e);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 4px 10px rgba(236, 72, 153, 0.3);
}

.sponsor-platinum-info {
  text-align: left;
}

.sponsor-platinum-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.sponsor-platinum-badge {
  display: inline-block;
  font-size: 0.6rem;
  font-weight: 600;
  padding: 0.12rem 0.4rem;
  background-color: rgba(236, 72, 153, 0.12);
  color: var(--accent-secondary);
  border: 1px solid rgba(236, 72, 153, 0.3);
  border-radius: 9999px;
  margin-top: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.sponsor-platinum-comment {
  text-align: left;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
  padding: 0.75rem 1rem;
  background-color: var(--bg-tertiary);
  border-radius: 0.75rem;
  border-left: 3px solid var(--accent-secondary);
}

/* Gold Sponsors */
.sponsors-gold {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 3.5rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.sponsor-card-gold {
  background-color: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 1rem 1.25rem;
  border-radius: 0.875rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: 0.85rem;
  transition: transform var(--transition-speed), border-color var(--transition-speed), box-shadow var(--transition-speed);
}

.sponsor-card-gold:hover {
  transform: translateY(-3px);
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

.sponsor-gold-avatar {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-primary), #818cf8);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: 0.9rem;
}

.sponsor-gold-info {
  text-align: left;
}

.sponsor-gold-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.sponsor-gold-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Silver Sponsors */
.sponsors-silver {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.65rem;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

.sponsor-tag-silver {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 9999px;
  font-size: 0.775rem;
  color: var(--text-secondary);
  transition: all var(--transition-speed);
}

.sponsor-tag-silver:hover {
  border-color: var(--accent-primary);
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
  transform: translateY(-1px);
}

.sponsor-silver-avatar {
  width: 1.15rem;
  height: 1.15rem;
  border-radius: 50%;
  background-color: var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  color: var(--text-secondary);
  font-weight: 600;
}

/* End of Sponsors Styles */