@tailwind base;
@tailwind components;
@tailwind utilities;

@layer base {
  html {
    @apply scroll-smooth;
  }

  body {
    @apply bg-surface-950 text-surface-200 antialiased font-body;
    background-image:
      radial-gradient(ellipse 80% 50% at 50% -20%, rgba(32, 168, 168, 0.07), transparent),
      url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.025'/%3E%3C/svg%3E");
  }

  ::selection {
    @apply bg-accent-500/30 text-white;
  }

  ::-webkit-scrollbar {
    @apply w-1.5;
  }

  ::-webkit-scrollbar-track {
    @apply bg-transparent;
  }

  ::-webkit-scrollbar-thumb {
    @apply rounded-full bg-surface-600 hover:bg-surface-500;
  }
}

@layer components {
  .section-divider {
    border: none;
    border-top: 1px dashed theme('colors.surface.700');
    @apply mx-auto max-w-5xl;
  }

  /* Stagger animation: items hidden by default, animate on scroll via IntersectionObserver */
  .stagger-children > * {
    @apply opacity-0;
  }
  .stagger-children.stagger-visible > * {
    @apply animate-fade-up;
  }
  .stagger-children.stagger-visible > *:nth-child(1) { animation-delay: 0ms; }
  .stagger-children.stagger-visible > *:nth-child(2) { animation-delay: 80ms; }
  .stagger-children.stagger-visible > *:nth-child(3) { animation-delay: 160ms; }
  .stagger-children.stagger-visible > *:nth-child(4) { animation-delay: 240ms; }
  .stagger-children.stagger-visible > *:nth-child(5) { animation-delay: 320ms; }
  .stagger-children.stagger-visible > *:nth-child(6) { animation-delay: 400ms; }
  .stagger-children.stagger-visible > *:nth-child(7) { animation-delay: 480ms; }
  .stagger-children.stagger-visible > *:nth-child(8) { animation-delay: 560ms; }
  .stagger-children.stagger-visible > *:nth-child(9) { animation-delay: 640ms; }
  .stagger-children.stagger-visible > *:nth-child(10) { animation-delay: 720ms; }
  .stagger-children.stagger-visible > *:nth-child(11) { animation-delay: 800ms; }
  .stagger-children.stagger-visible > *:nth-child(12) { animation-delay: 880ms; }

  .card-dotted {
    @apply border border-dashed border-surface-600/60 rounded-lg p-6 transition-all duration-300;
  }
  .card-dotted:hover {
    @apply border-accent-500/40 bg-accent-500/[0.03];
  }

  /* ── TV-effect download button ── */
  .btn-tv {
    position: relative;
    display: inline-flex;
    overflow: hidden;
    isolation: isolate;
    border: 1px solid rgba(32, 168, 168, 0.3);
    background: linear-gradient(135deg, rgba(32, 168, 168, 0.12) 0%, rgba(32, 168, 168, 0.06) 50%, rgba(32, 168, 168, 0.1) 100%);
    background-size: 180% 180%;
    background-position: 0% 50%;
    box-shadow:
      0 0 20px rgba(32, 168, 168, 0.15),
      0 0 40px rgba(32, 168, 168, 0.05),
      inset 0 1px 0 rgba(255, 255, 255, 0.06),
      inset 0 0 20px rgba(32, 168, 168, 0.03);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    animation: tvIdleGlow 2.1s ease-in-out infinite, tvSurfaceShift 2.8s linear infinite, tvButtonJitter 1.2s steps(2, end) infinite;
    will-change: transform, box-shadow, background-position;
  }

  .btn-tv::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 1;
    opacity: 0.34;
    background: repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(32, 168, 168, 0.03) 2px,
      rgba(32, 168, 168, 0.03) 4px
    );
    transition: opacity 0.3s ease;
    pointer-events: none;
    animation: tvHorizontalRoll 2.2s linear infinite;
  }

  .btn-tv::after {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 1;
    opacity: 0.22;
    pointer-events: none;
    mix-blend-mode: screen;
    background-image:
      linear-gradient(180deg, rgba(32, 168, 168, 0) 0%, rgba(32, 168, 168, 0.1) 48%, rgba(32, 168, 168, 0) 100%),
      repeating-linear-gradient(
        0deg,
        transparent 0px,
        transparent 5px,
        rgba(180, 255, 255, 0.045) 6px,
        transparent 7px
      );
    background-size: 100% 100%, 100% 12px;
    background-position: 0 0, 0 0;
    animation: tvInterferenceShift 0.45s steps(14) infinite, tvNoSignalBurst 3.6s steps(1, end) infinite;
  }

  /* TV scanline sweep overlay */
  .btn-tv .tv-scanline {
    position: absolute;
    inset: 0;
    z-index: 2;
    opacity: 0.75;
    overflow: hidden;
    pointer-events: none;
    transition: opacity 0.3s ease;
  }

  .btn-tv .tv-scanline::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    height: 40%;
    background: linear-gradient(
      180deg,
      transparent,
      rgba(32, 168, 168, 0.08) 40%,
      rgba(32, 168, 168, 0.12) 50%,
      rgba(32, 168, 168, 0.08) 60%,
      transparent
    );
    animation: tvScan 1.1s linear infinite;
  }

  /* Static noise overlay */
  .btn-tv .tv-noise {
    position: absolute;
    inset: -50%;
    z-index: 3;
    opacity: 0.08;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.4'/%3E%3C/svg%3E");
    background-size: 128px 128px;
    background-position: 0 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    mix-blend-mode: overlay;
    animation: tvNoiseDrift 0.55s steps(24) infinite;
  }

  .btn-tv .tv-noise::after {
    content: '';
    position: absolute;
    top: 48%;
    left: -38%;
    width: 34%;
    height: 1px;
    border-radius: 9999px;
    background: linear-gradient(
      90deg,
      transparent 0%,
      rgba(32, 168, 168, 0.5) 40%,
      rgba(155, 255, 255, 0.8) 50%,
      rgba(32, 168, 168, 0.5) 60%,
      transparent 100%
    );
    box-shadow: 0 0 10px rgba(32, 168, 168, 0.35);
    opacity: 0.95;
    height: 2px;
    animation: tvNoiseLineX 1.15s linear infinite;
  }

  /* CRT vignette corners */
  .btn-tv .tv-vignette {
    position: absolute;
    inset: 0;
    z-index: 4;
    opacity: 0;
    border-radius: inherit;
    box-shadow: inset 0 0 60px rgba(0, 0, 0, 0.3);
    pointer-events: none;
    transition: opacity 0.4s ease;
  }

  /* Hover state: TV turns on */
  .btn-tv:hover {
    border-color: rgba(32, 168, 168, 0.5);
    background: linear-gradient(135deg, rgba(32, 168, 168, 0.18) 0%, rgba(32, 168, 168, 0.08) 50%, rgba(32, 168, 168, 0.15) 100%);
    box-shadow:
      0 0 44px rgba(32, 168, 168, 0.45),
      0 0 100px rgba(32, 168, 168, 0.22),
      0 0 130px rgba(32, 168, 168, 0.12),
      inset 0 1px 0 rgba(255, 255, 255, 0.08),
      inset 0 0 30px rgba(32, 168, 168, 0.06);
    transform: translateY(-2px) scale(1.055);
  }

  .btn-tv:hover::before {
    opacity: 0.75;
  }

  .btn-tv:hover::after {
    opacity: 0.45;
  }

  .btn-tv:hover .tv-scanline {
    opacity: 1;
  }

  .btn-tv:hover .tv-noise {
    opacity: 0.16;
    animation: tvNoiseDrift 0.35s steps(30) infinite, tvFlicker 0.08s infinite;
  }

  .btn-tv:hover .tv-noise::after {
    opacity: 1;
    animation-duration: 0.65s;
  }

  .btn-tv:hover .tv-vignette {
    opacity: 1;
  }

  /* Glitch text on hover */
  .btn-tv:hover .btn-tv-text {
    text-shadow:
      2px 0 rgba(32, 168, 168, 0.3),
      -2px 0 rgba(255, 100, 100, 0.15);
    animation: tvTextGlitch 4s infinite;
  }

  .btn-tv .btn-tv-text {
    animation: tvSubpixelDrift 8s ease-in-out infinite;
  }

  @keyframes tvTextGlitch {
    0%, 93%, 100% {
      text-shadow:
        0 0 rgba(32, 168, 168, 0),
        0 0 rgba(255, 100, 100, 0);
    }
    94% {
      text-shadow:
        2px 0 rgba(32, 168, 168, 0.4),
        -2px 0 rgba(255, 100, 100, 0.2);
    }
    95% {
      text-shadow:
        -1px 0 rgba(32, 168, 168, 0.3),
        1px 0 rgba(255, 100, 100, 0.15);
    }
    96% {
      text-shadow:
        3px 0 rgba(32, 168, 168, 0.5),
        -3px 0 rgba(255, 100, 100, 0.25);
    }
    97% {
      text-shadow:
        0 0 rgba(32, 168, 168, 0),
        0 0 rgba(255, 100, 100, 0);
    }
  }

  @keyframes tvIdleGlow {
    0%, 100% {
      box-shadow:
        0 0 18px rgba(32, 168, 168, 0.14),
        0 0 36px rgba(32, 168, 168, 0.04),
        inset 0 1px 0 rgba(255, 255, 255, 0.05),
        inset 0 0 18px rgba(32, 168, 168, 0.02);
    }
    50% {
      box-shadow:
        0 0 24px rgba(32, 168, 168, 0.2),
        0 0 48px rgba(32, 168, 168, 0.07),
        inset 0 1px 0 rgba(255, 255, 255, 0.07),
        inset 0 0 24px rgba(32, 168, 168, 0.04);
    }
  }

  @keyframes tvSurfaceShift {
    0% {
      background-position: 0% 50%;
    }
    50% {
      background-position: 100% 50%;
    }
    100% {
      background-position: 0% 50%;
    }
  }

  @keyframes tvButtonJitter {
    0%, 100% {
      transform: translate3d(0, 0, 0);
    }
    20% {
      transform: translate3d(0.4px, -0.3px, 0);
    }
    40% {
      transform: translate3d(-0.5px, 0.2px, 0);
    }
    60% {
      transform: translate3d(0.3px, 0.1px, 0);
    }
    80% {
      transform: translate3d(-0.2px, -0.2px, 0);
    }
  }

  @keyframes tvNoiseDrift {
    0% {
      transform: translate3d(-1%, -0.5%, 0) scale(1);
      background-position: 0 0;
    }
    50% {
      transform: translate3d(1%, 0.8%, 0) scale(1.015);
      background-position: 22px -18px;
    }
    100% {
      transform: translate3d(-0.5%, -0.2%, 0) scale(1);
      background-position: 44px -8px;
    }
  }

  @keyframes tvNoiseLineX {
    0% {
      transform: translateX(0);
    }
    100% {
      transform: translateX(420%);
    }
  }

  @keyframes tvHorizontalRoll {
    0% {
      transform: translateY(0);
    }
    100% {
      transform: translateY(20px);
    }
  }

  @keyframes tvInterferenceShift {
    0% {
      transform: translate3d(0, 0, 0);
      background-position: 0 0, 0 0;
    }
    100% {
      transform: translate3d(0, 0, 0);
      background-position: 0 0, 0 12px;
    }
  }

  @keyframes tvNoSignalBurst {
    0%, 60%, 100% {
      filter: contrast(1) brightness(1);
      transform: translate3d(0, 0, 0);
    }
    61% {
      filter: contrast(2.1) brightness(1.35) saturate(1.15);
      transform: translate3d(1.3%, -0.5%, 0);
    }
    62% {
      filter: contrast(0.72) brightness(0.8) saturate(0.9);
      transform: translate3d(-1.4%, 0.4%, 0);
    }
    63% {
      filter: contrast(1.6) brightness(1.2) saturate(1.1);
      transform: translate3d(0.6%, -0.2%, 0);
    }
  }

  @keyframes tvSubpixelDrift {
    0%, 100% {
      transform: translate3d(0, 0, 0);
      text-shadow:
        0 0 rgba(32, 168, 168, 0),
        0 0 rgba(255, 110, 110, 0);
    }
    45% {
      transform: translate3d(0.1px, 0, 0);
      text-shadow:
        0.5px 0 rgba(32, 168, 168, 0.2),
        -0.5px 0 rgba(255, 110, 110, 0.08);
    }
    55% {
      transform: translate3d(-0.1px, 0, 0);
      text-shadow:
        0.4px 0 rgba(32, 168, 168, 0.16),
        -0.4px 0 rgba(255, 110, 110, 0.06);
    }
  }

  /* ── Carousel infinite marquee ── */
  .carousel-track {
    animation: marquee 40s linear infinite;
  }

  .carousel-track:hover {
    animation-play-state: paused;
  }

  @keyframes marquee {
    0%   { transform: translateX(0); }
    100% { transform: translateX(-50%); }
  }

  @media (prefers-reduced-motion: reduce) {
    .carousel-track {
      animation: none;
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
    }

    .btn-tv,
    .btn-tv::before,
    .btn-tv::after,
    .btn-tv .tv-noise,
    .btn-tv .tv-noise::after,
    .btn-tv .tv-scanline::after,
    .btn-tv .btn-tv-text,
    .btn-tv:hover .btn-tv-text {
      animation-duration: 16s !important;
    }
  }
}