/* Modern Dark Theme - Eunoria Landing Page */
:root {
  --bg-primary: #050505;
  --bg-secondary: #0a0a0a;
  --bg-tertiary: #111111;
  --bg-glass: rgba(20, 20, 20, 0.7);
  --bg-glass-light: rgba(255, 255, 255, 0.03);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-strong: rgba(255, 255, 255, 0.15);
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --text-tertiary: #71717a;
  --accent-primary: #f59e0b;
  --accent-secondary: #ea580c;
  --accent-gradient: linear-gradient(135deg, #f59e0b 0%, #ea580c 100%);
  --glow-primary: 0 0 80px rgba(245, 158, 11, 0.25);
  --glow-secondary: 0 0 60px rgba(234, 88, 12, 0.2);
  --shadow-soft: 0 10px 40px -10px rgba(0, 0, 0, 0.8);
  --shadow-strong: 0 25px 60px -15px rgba(0, 0, 0, 0.9);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-heading: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: "Rajdhani", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-body);
  background: radial-gradient(ellipse at top, #111111 0%, var(--bg-primary) 50%),
    var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

/* Selection */
::selection {
  background: rgba(245, 158, 11, 0.3);
  color: var(--text-primary);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(to bottom, var(--accent-primary), var(--accent-secondary));
  border-radius: 10px;
  border: 2px solid var(--bg-primary);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(to bottom, #fbbf24, #fb923c);
}

/* Utilities */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.text-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
}

.glass {
  background: var(--bg-glass);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(5, 5, 5, 0.7);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(5, 5, 5, 0.85);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo img {
  height: 42px;
  width: auto;
  transition: var(--transition);
  filter: brightness(1.1);
}

.nav-logo:hover img {
  transform: scale(1.05);
  filter: brightness(1.2);
}

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

.nav-link {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  letter-spacing: 0.02em;
  position: relative;
  transition: var(--transition);
  padding: 8px 0;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  transition: var(--transition);
  border-radius: 2px;
  box-shadow: var(--glow-primary);
}

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

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

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 8px 12px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
}

.nav-toggle:hover {
  background: var(--bg-glass-light);
  border-color: var(--accent-primary);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  margin: 4px 0;
  border-radius: 2px;
}

/* Hero Section */
.hero {
  position: relative;
  height: 100dvh;
  min-height: 100dvh;
  max-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 120% 80% at 50% 0%, rgba(245, 158, 11, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 20% 30%, rgba(234, 88, 12, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 80% 20%, rgba(245, 158, 11, 0.1) 0%, transparent 40%);
  z-index: 0;
  animation: pulse 20s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.8;
  }
  50% {
    opacity: 1;
  }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 0%, var(--bg-primary) 70%);
  z-index: 0;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 80px 80px;
  z-index: 0;
  mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
  opacity: 0.4;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100dvh;
  min-height: 100dvh;
  max-height: 100dvh;
  width: 100%;
  padding: 0;
}

.hero-content--center {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100dvh;
  min-height: 100dvh;
  max-height: 100dvh;
  padding-bottom: 0;
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg-glass);
  border: 1px solid var(--border-color-strong);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  width: fit-content;
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(245, 158, 11, 0.15);
}

.hero-badge i {
  color: var(--accent-primary);
  font-size: 16px;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(48px, 8vw, 92px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0;
}

.hero-subtitle {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--text-secondary);
  max-width: 600px;
  font-weight: 400;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  overflow: hidden;
  letter-spacing: 0.01em;
  z-index: 1;
}

.btn:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

.btn-shine {
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.6s ease;
  z-index: -1;
}

.btn:hover .btn-shine {
  left: 100%;
}

.btn-primary {
  background: var(--accent-gradient);
  color: var(--text-primary);
  box-shadow: 0 8px 30px rgba(234, 88, 12, 0.4), var(--glow-primary);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(234, 88, 12, 0.5), 0 0 100px rgba(245, 158, 11, 0.3);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-primary:disabled,
.btn-primary[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
  filter: grayscale(0.5);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color-strong);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: var(--bg-glass-light);
  border-color: var(--accent-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(245, 158, 11, 0.2);
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-top: 16px;
  padding: 20px 0;
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.02em;
  background: linear-gradient(to right, var(--text-primary), var(--text-secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat-label {
  font-size: 12px;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 600;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, transparent, var(--border-color-strong), transparent);
}

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

.logo-wrapper {
  position: relative;
  width: 100%;
  max-width: 420px;
  aspect-ratio: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 auto;
}

.hero-logo-img {
  width: 85%;
  height: 85%;
  object-fit: contain;
  filter: drop-shadow(0 20px 60px rgba(245, 158, 11, 0.3));
  z-index: 2;
  animation: float 8s ease-in-out infinite;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px) scale(1);
  }
  50% {
    transform: translateY(-20px) scale(1.02);
  }
}

.logo-glow {
  position: absolute;
  inset: 10%;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.25) 0%, transparent 70%);
  filter: blur(60px);
  z-index: 1;
  animation: glowPulse 6s ease-in-out infinite;
}

@keyframes glowPulse {
  0%,
  100% {
    opacity: 0.6;
    transform: scale(1);
  }
  50% {
    opacity: 0.9;
    transform: scale(1.1);
  }
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  z-index: 2;
  color: var(--text-tertiary);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-weight: 600;
  animation: bounce 2s ease-in-out infinite;
}

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

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, transparent, var(--accent-primary), transparent);
}

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

.section:nth-child(even) {
  background: radial-gradient(ellipse at top, rgba(245, 158, 11, 0.08) 0%, transparent 60%),
    var(--bg-secondary);
}

.section-header {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 60px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--bg-glass);
  border: 1px solid var(--border-color-strong);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-primary);
  width: fit-content;
  margin: 0 auto;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: clamp(16px, 2vw, 18px);
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto;
}

/* About Section */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.about-card {
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.about-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top, rgba(245, 158, 11, 0.1) 0%, transparent 60%);
  z-index: 0;
}

.about-card > * {
  position: relative;
  z-index: 1;
}

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

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--text-primary);
  box-shadow: 0 8px 30px rgba(234, 88, 12, 0.4);
}

.about-card h3 {
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.3;
}

.about-card p {
  color: var(--text-secondary);
  font-size: 15px;
}

/* Features Section */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 24px;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.feature-item:hover {
  border-color: var(--accent-primary);
  background: var(--bg-glass-light);
  transform: translateX(4px);
  box-shadow: 0 8px 30px rgba(245, 158, 11, 0.15);
}

.feature-item i {
  font-size: 28px;
  color: var(--accent-primary);
  flex-shrink: 0;
  width: 40px;
  text-align: center;
}

.feature-item h3 {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
  line-height: 1.3;
}

.feature-item p {
  color: var(--text-secondary);
  font-size: 14px;
}

/* Download Section */
.download-card {
  padding: 60px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.download-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top, rgba(245, 158, 11, 0.15) 0%, transparent 60%);
  z-index: 0;
}

.download-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.download-box {
  margin: 32px auto 0;
  padding: 32px 40px;
  background: var(--bg-glass-light);
  border: 1px solid var(--border-color-strong);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  max-width: 680px;
  width: 100%;
}

.download-info {
  display: flex;
  align-items: center;
  gap: 16px;
  text-align: left;
  flex: 1;
  min-width: 260px;
}

.download-icon {
  font-size: 36px;
  color: var(--accent-primary);
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  background: var(--bg-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color-strong);
  flex-shrink: 0;
}

.download-info h3 {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 4px;
}

.download-status {
  color: var(--text-secondary);
  font-size: 14px;
}

.btn-download {
  white-space: nowrap;
  min-width: 200px;
  justify-content: center;
}

.download-note {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 20px;
  background: var(--bg-glass-light);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  margin-top: 8px;
  text-align: left;
}

.download-note i {
  color: var(--accent-primary);
  font-size: 18px;
  flex-shrink: 0;
  margin-top: 2px;
}

.download-note p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

/* Community Section */
.community-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.community-card {
  padding: 32px 24px;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
  transition: var(--transition);
  position: relative;
}

.community-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top, rgba(245, 158, 11, 0.08) 0%, transparent 60%);
  z-index: 0;
}

.community-card > * {
  position: relative;
  z-index: 1;
}

.community-card i {
  font-size: 36px;
  color: var(--accent-primary);
  transition: var(--transition);
}

.community-card h3 {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 600;
}

.community-card p {
  color: var(--text-tertiary);
  font-size: 13px;
}

.community-card:hover:not(.disabled) {
  transform: translateY(-6px);
  border-color: var(--accent-primary);
  box-shadow: var(--glow-primary), var(--shadow-soft);
}

.community-card:hover:not(.disabled) i {
  transform: scale(1.1);
}

.community-card.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
  filter: grayscale(0.3);
}

/* Footer */
.footer {
  padding: 20px 0;
  background: transparent;
  border-top: none;
}

.footer--overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 2;
  background: rgba(5, 5, 5, 0.25);
  backdrop-filter: blur(4px) saturate(120%);
  -webkit-backdrop-filter: blur(4px) saturate(120%);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: 12px 0;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 320px;
}

.footer-brand img {
  height: 38px;
  width: fit-content;
  filter: brightness(1.1);
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 14px;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
}

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

.footer-divider {
  height: 1px;
  background: linear-gradient(to right, transparent, var(--border-color), transparent);
  margin-bottom: 24px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--text-tertiary);
  font-size: 13px;
}

.footer-note {
  color: var(--text-tertiary);
}

/* Responsive */
@media (max-width: 1080px) {
  .hero-content {
    flex-direction: column;
    justify-content: center;
    text-align: center;
  }

  .hero-text {
    align-items: center;
  }

  .hero-subtitle {
    margin: 0 auto;
  }

  .hero-stats {
    justify-content: center;
  }

  .download-box {
    flex-direction: column;
    text-align: center;
    padding: 28px 24px;
  }

  .download-info {
    text-align: center;
    flex-direction: column;
    min-width: unset;
  }
}

@media (max-width: 768px) {
  html {
    scroll-padding-top: 70px;
  }

  .nav-links {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(5, 5, 5, 0.98);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 0;
    display: none;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.6);
  }

  .nav-links.active {
    display: flex;
  }

  .nav-link {
    display: block;
    width: 100%;
    padding: 14px 24px;
    font-size: 15px;
  }

  .nav-link::after {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .hero {
    padding: 100px 0 70px;
  }

  .section {
    padding: 70px 0;
  }

  .download-card {
    padding: 40px 24px;
  }

  .footer-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 28px;
  }

  .footer-links {
    gap: 16px 24px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .hero-stats {
    flex-direction: column;
    gap: 16px;
  }

  .stat-divider {
    display: none;
  }

  .features-grid,
  .about-grid,
  .community-links {
    grid-template-columns: 1fr;
  }
}