@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Orbitron:wght@400;500;600;700;800;900&display=swap');

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-deep: #040406;
  --bg-surface: #0a0a0e;
  --bg-card: #0e0e14;
  --bg-elevated: #13131a;
  --border-dim: #1c1c28;
  --border-light: #262636;
  --text-primary: #fafafa;
  --text-secondary: #b8b8cc;
  --text-muted: #6a6a7a;
  --accent: #00ffc8;
  --accent-glow: rgba(0, 255, 200, 0.4);
  --accent-soft: rgba(0, 255, 200, 0.08);
  --accent-dim: rgba(0, 255, 200, 0.15);
  --electric: #00b4ff;
  --electric-glow: rgba(0, 180, 255, 0.4);
  --violet: #a855f7;
  --violet-glow: rgba(168, 85, 247, 0.4);
  --amber: #ffb300;
  --amber-glow: rgba(255, 179, 0, 0.4);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 40px rgba(0, 255, 200, 0.08), 0 0 80px rgba(0, 255, 200, 0.04);
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --transition-fast: 120ms ease;
  --transition-normal: 200ms ease;
  --transition-smooth: 300ms cubic-bezier(0.23, 1, 0.32, 1);
}

html {
  font-size: 16px;
}

body {
  min-height: 100vh;
  background: var(--bg-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text-primary);
  padding: 1rem;
  overflow-x: hidden;
  position: relative;
}

/* ===== OPTIMIZED BACKGROUND (GPU-only transforms) ===== */

.bg-gradient {
  position: fixed;
  inset: -40%;
  background: 
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0, 255, 200, 0.035) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 100% 100%, rgba(0, 180, 255, 0.025) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 0% 100%, rgba(168, 85, 247, 0.02) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
  will-change: transform, opacity;
  animation: ambientShift 24s ease-in-out infinite alternate;
}

@keyframes ambientShift {
  0% { transform: translate(0, 0) scale(1); opacity: 0.7; }
  50% { transform: translate(1.5%, 1%) scale(1.02); opacity: 1; }
  100% { transform: translate(-1%, 0.5%) scale(1.01); opacity: 0.8; }
}

.bg-grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

.bg-vignette {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  background: radial-gradient(ellipse at center, transparent 50%, rgba(0,0,0,0.25) 100%);
  opacity: 0.5;
}

.container {
  position: relative;
  z-index: 10;
  background: linear-gradient(145deg, var(--bg-card) 0%, var(--bg-elevated) 100%);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  max-width: 480px;
  width: 100%;
  text-align: center;
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.02) inset,
    var(--shadow-lg),
    var(--shadow-glow);
  overflow: hidden;
  animation: containerEntrance 0.5s cubic-bezier(0.23, 1, 0.32, 1) forwards;
  opacity: 0;
  transform: translateY(16px) scale(0.99);
  will-change: transform, opacity;
}

@keyframes containerEntrance {
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--accent) 50%, transparent 100%);
  opacity: 0;
  animation: topLineReveal 0.6s cubic-bezier(0.23, 1, 0.32, 1) 0.1s forwards;
  will-change: transform, opacity;
}

@keyframes topLineReveal {
  0% { opacity: 0; transform: scaleX(0); transform-origin: center; }
  100% { opacity: 1; transform: scaleX(1); }
}

.container::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
  pointer-events: none;
}

.badge {
  position: relative;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: 'Orbitron', monospace;
  font-size: 0.5625rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.4rem 0.875rem;
  border-radius: 100px;
  margin-bottom: 1rem;
  border: 1px solid var(--accent-dim);
  box-shadow:
    0 0 16px var(--accent-glow),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  animation: badgeEntrance 0.4s cubic-bezier(0.23, 1, 0.32, 1) 0.08s forwards;
  opacity: 0;
  transform: translateY(6px) scale(0.95);
  will-change: transform, opacity;
}

@keyframes badgeEntrance {
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.badge::before {
  content: '';
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent), 0 0 16px var(--accent);
  animation: indicatorBlink 2s ease-in-out infinite;
  will-change: opacity, transform;
}

@keyframes indicatorBlink {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.9); }
}

h1 {
  position: relative;
  z-index: 2;
  font-family: 'Orbitron', monospace;
  font-size: clamp(1.625rem, 4vw, 2.125rem);
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.1;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  animation: titleEntrance 0.5s cubic-bezier(0.23, 1, 0.32, 1) 0.15s forwards;
  opacity: 0;
  transform: translateY(12px);
  filter: blur(8px);
  will-change: transform, opacity, filter;
}

@keyframes titleEntrance {
  to { opacity: 1; transform: translateY(0); filter: blur(0); }
}

.subtitle {
  position: relative;
  z-index: 2;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  font-weight: 400;
  margin-bottom: 1.75rem;
  max-width: 340px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.5;
  animation: fadeUp 0.4s cubic-bezier(0.23, 1, 0.32, 1) 0.2s forwards;
  opacity: 0;
  transform: translateY(10px);
  will-change: transform, opacity;
}

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

/* ===== LINKS / BUTTONS - OPTIMIZED ===== */
.links {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.link-btn {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 0.9375rem 1.125rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.005em;
  color: var(--text-primary);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
  text-align: left;
  overflow: hidden;
  animation: btnEntrance 0.35s cubic-bezier(0.23, 1, 0.32, 1) forwards;
  opacity: 0;
  transform: translateY(10px);
  will-change: transform, opacity, box-shadow;
}

.link-btn:nth-child(1) { animation-delay: 0.3s; }
.link-btn:nth-child(2) { animation-delay: 0.36s; }
.link-btn:nth-child(3) { animation-delay: 0.42s; }
.link-btn:nth-child(4) { animation-delay: 0.48s; }

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

.link-btn .btn-bg {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-md);
  background: var(--btn-bg, var(--bg-elevated));
  z-index: 0;
  transition: box-shadow var(--transition-normal);
  will-change: box-shadow;
}

.link-btn .btn-border {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--btn-border, var(--border-dim));
  z-index: 1;
  pointer-events: none;
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
  will-change: border-color, box-shadow;
}

.link-btn .btn-glow-ring {
  position: absolute;
  inset: -3px;
  border-radius: calc(var(--radius-md) + 3px);
  background: var(--btn-glow, transparent);
  opacity: 0;
  filter: blur(20px);
  transition: opacity var(--transition-normal);
  z-index: -1;
  pointer-events: none;
  will-change: opacity;
}

.link-btn:hover .btn-glow-ring,
.link-btn:focus .btn-glow-ring {
  opacity: 0.5;
}

.link-btn:hover {
  transform: translateY(-2px) translateX(3px);
  box-shadow: 
    0 0 0 1px var(--btn-border-hover, var(--accent)) inset,
    0 12px 40px rgba(0, 0, 0, 0.5),
    0 3px 12px var(--btn-arrow-glow, var(--accent-glow));
}

.link-btn:active {
  transform: translateY(0) translateX(2px) scale(0.99);
  transition-duration: 50ms;
}

.link-btn:focus-visible {
  outline: none;
}

.link-btn:focus-visible .btn-border {
  box-shadow:
    0 0 0 2px var(--accent),
    0 0 0 4px var(--bg-deep),
    0 12px 40px rgba(0, 0, 0, 0.5);
}

.link-btn .icon {
  position: relative;
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  font-size: 1.25rem;
  border-radius: var(--radius-sm);
  background: var(--icon-bg, var(--bg-surface));
  border: 1px solid var(--icon-border, var(--border-dim));
  flex-shrink: 0;
  transition: transform var(--transition-smooth);
  will-change: transform;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.link-btn:hover .icon {
  transform: scale(1.05) rotate(1deg);
}

.link-btn:active .icon {
  transform: scale(1);
}

.link-btn .label {
  position: relative;
  z-index: 4;
  flex: 1;
  text-align: left;
  min-width: 0;
}

.link-btn .label-main {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.25;
  color: var(--text-primary);
}

.link-btn .label-sub {
  display: block;
  font-size: 0.625rem;
  font-weight: 400;
  color: transparent;
  margin-top: 0.125rem;
  opacity: 0;
  transform: translateX(-5px);
  transition: opacity var(--transition-smooth), transform var(--transition-smooth), color var(--transition-fast);
  white-space: nowrap;
  will-change: opacity, transform, color;
}

.link-btn:hover .label-sub {
  opacity: 1;
  transform: translateX(0);
}

.link-btn.website.primary:hover .label-sub { color: var(--accent); }
.link-btn.bot:hover .label-sub { color: #00b4ff; }
.link-btn.backup:hover .label-sub { color: #a855f7; }
.link-btn.support:hover .label-sub { color: #ffb300; }

.link-btn.primary .label-main::after {
  content: '';
  display: block;
  width: 0;
  height: 2px;
  margin-top: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
  border-radius: 1px;
  transition: width var(--transition-smooth);
  will-change: width;
}

.link-btn.primary:hover .label-main::after {
  width: 45%;
}

.link-btn .arrow {
  position: relative;
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  color: var(--text-muted);
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  transition: transform var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
  flex-shrink: 0;
  will-change: transform, background, box-shadow;
}

.link-btn:hover .arrow {
  background: var(--btn-arrow-hover, var(--accent));
  color: var(--bg-deep);
  border-color: var(--btn-arrow-hover, var(--accent));
  transform: translateX(5px) rotate(-3deg);
  box-shadow: 0 0 20px var(--btn-arrow-glow, var(--accent-glow));
}

.link-btn:active .arrow {
  transform: translateX(2px) rotate(0);
}

/* ===== BUTTON VARIANTS ===== */

.link-btn.website.primary {
  --btn-bg: linear-gradient(135deg, rgba(0, 255, 200, 0.12) 0%, rgba(0, 255, 200, 0.04) 50%, rgba(0, 255, 200, 0.02) 100%);
  --btn-border: var(--accent-dim);
  --btn-border-hover: var(--accent);
  --btn-glow: var(--accent);
  --btn-arrow-hover: var(--accent);
  --btn-arrow-glow: var(--accent-glow);
  --icon-bg: linear-gradient(135deg, var(--accent-soft) 0%, rgba(0, 255, 200, 0.04) 100%);
  --icon-border: var(--accent-dim);
  --icon-glow: var(--accent);
}

.link-btn.website.primary .icon {
  color: var(--accent);
}

.link-btn.website.primary:hover {
  transform: translateY(-3px) translateX(5px);
  box-shadow: 
    0 0 0 1px var(--accent) inset,
    0 16px 48px var(--accent-glow),
    0 4px 16px rgba(0, 0, 0, 0.4);
}

.link-btn.bot {
  --btn-bg: linear-gradient(135deg, rgba(0, 180, 255, 0.1) 0%, rgba(0, 180, 255, 0.03) 50%, rgba(0, 180, 255, 0.015) 100%);
  --btn-border: rgba(0, 180, 255, 0.2);
  --btn-border-hover: #00b4ff;
  --btn-glow: #00b4ff;
  --btn-arrow-hover: #00b4ff;
  --btn-arrow-glow: rgba(0, 180, 255, 0.4);
  --icon-bg: linear-gradient(135deg, rgba(0, 180, 255, 0.1) 0%, rgba(0, 180, 255, 0.03) 100%);
  --icon-border: rgba(0, 180, 255, 0.25);
  --icon-glow: #00b4ff;
}

.link-btn.bot .icon {
  color: #00b4ff;
}

.link-btn.backup {
  --btn-bg: linear-gradient(135deg, rgba(168, 85, 247, 0.1) 0%, rgba(168, 85, 247, 0.03) 50%, rgba(168, 85, 247, 0.015) 100%);
  --btn-border: rgba(168, 85, 247, 0.2);
  --btn-border-hover: #a855f7;
  --btn-glow: #a855f7;
  --btn-arrow-hover: #a855f7;
  --btn-arrow-glow: rgba(168, 85, 247, 0.4);
  --icon-bg: linear-gradient(135deg, rgba(168, 85, 247, 0.1) 0%, rgba(168, 85, 247, 0.03) 100%);
  --icon-border: rgba(168, 85, 247, 0.25);
  --icon-glow: #a855f7;
}

.link-btn.backup .icon {
  color: #a855f7;
}

.link-btn.support {
  --btn-bg: linear-gradient(135deg, rgba(255, 179, 0, 0.1) 0%, rgba(255, 179, 0, 0.03) 50%, rgba(255, 179, 0, 0.015) 100%);
  --btn-border: rgba(255, 179, 0, 0.2);
  --btn-border-hover: #ffb300;
  --btn-glow: #ffb300;
  --btn-arrow-hover: #ffb300;
  --btn-arrow-glow: rgba(255, 179, 0, 0.4);
  --icon-bg: linear-gradient(135deg, rgba(255, 179, 0, 0.1) 0%, rgba(255, 179, 0, 0.03) 100%);
  --icon-border: rgba(255, 179, 0, 0.25);
  --icon-glow: #ffb300;
}

.link-btn.support .icon {
  color: #ffb300;
}

.footer {
  position: relative;
  z-index: 2;
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-dim);
  font-family: 'Orbitron', monospace;
  font-size: 0.5625rem;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  animation: fadeUp 0.4s cubic-bezier(0.23, 1, 0.32, 1) 0.5s forwards;
  opacity: 0;
  transform: translateY(10px);
  will-change: transform, opacity;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .bg-gradient { animation: none; }
}

/* Mobile */
@media (max-width: 480px) {
  .container {
    padding: 1.5rem 1.25rem;
    border-radius: var(--radius-md);
  }
  
  h1 {
    font-size: 1.5rem;
  }
  
  .subtitle {
    font-size: 0.75rem;
    margin-bottom: 1.5rem;
  }
  
  .link-btn {
    padding: 0.875rem 1rem;
    font-size: 0.8125rem;
  }
  
  .link-btn .icon {
    width: 40px;
    height: 40px;
    font-size: 1.125rem;
  }
  
  .link-btn .arrow {
    width: 32px;
    height: 32px;
    font-size: 0.9375rem;
  }
  
  .link-btn:hover {
    transform: none;
  }
  
  .link-btn:active {
    transform: scale(0.98);
  }
  
  .link-btn:hover .label-sub {
    opacity: 1;
    transform: translateX(0);
  }
  
  .link-btn.primary:hover .label-main::after {
    width: 0;
  }
}