app/globals.css

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

/* ───────────────────────────────────────────────────────────────
   Twilight Atelier — base canvas
   ─────────────────────────────────────────────────────────────── */
@layer base {
  :root {
    color-scheme: dark;
  }

  html,
  body {
    background: #06070a;
    color: #f5f3ec;
    font-family: var(--font-manrope), system-ui, -apple-system, sans-serif;
    font-size: 15px;
    line-height: 1.6;
    font-weight: 400;
    font-feature-settings: "ss01", "cv11", "calt";
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
  }

  body {
    /* Layered: deep canvas + warm aurora + subtle grain */
    background:
      radial-gradient(1100px 700px at 78% -10%, rgba(255, 181, 69, 0.12), transparent 65%),
      radial-gradient(900px 800px at 8% 110%, rgba(98, 70, 255, 0.10), transparent 60%),
      radial-gradient(1400px 900px at 50% 50%, rgba(20, 24, 40, 0.6), transparent 70%),
      #06070a;
    background-attachment: fixed;
    min-height: 100vh;
    overflow-x: hidden;
  }

  /* Subtle grain overlay (doesn't capture pointer events) */
  body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background-image: url("data:image/svg+xml;utf8,<svg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1, 0 0 0 0 1, 0 0 0 0 1, 0 0 0 0.06 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
    opacity: 0.65;
    mix-blend-mode: overlay;
  }

  ::selection {
    background: rgba(255, 181, 69, 0.32);
    color: #fff8e7;
  }

  /* Custom scrollbar — barely there */
  ::-webkit-scrollbar {
    width: 10px;
    height: 10px;
  }
  ::-webkit-scrollbar-thumb {
    background-color: rgba(255, 255, 255, 0.08);
    border-radius: 9999px;
    border: 2px solid transparent;
    background-clip: content-box;
  }
  ::-webkit-scrollbar-thumb:hover {
    background-color: rgba(255, 255, 255, 0.16);
  }
  ::-webkit-scrollbar-track {
    background: transparent;
  }

  /* Focus ring — luminous amber */
  :focus-visible {
    outline: 2px solid rgba(255, 181, 69, 0.75);
    outline-offset: 2px;
    border-radius: 4px;
  }
  button:focus-visible,
  a:focus-visible,
  input:focus-visible,
  textarea:focus-visible {
    outline-offset: 3px;
  }

  /* Default kerning for headlines */
  h1,
  h2,
  h3,
  h4 {
    letter-spacing: -0.02em;
  }
}

/* ───────────────────────────────────────────────────────────────
   Component grammars
   ─────────────────────────────────────────────────────────────── */
@layer components {
  /* ── Glass surfaces ─────────────────────────────────────────── */
  .glass {
    background: rgba(255, 255, 255, 0.04);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05) inset,
      0 0 0 1px rgba(255, 255, 255, 0.08),
      0 16px 40px -16px rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(16px) saturate(140%);
    -webkit-backdrop-filter: blur(16px) saturate(140%);
  }

  .glass-strong {
    background: rgba(255, 255, 255, 0.06);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.08) inset,
      0 0 0 1px rgba(255, 255, 255, 0.14),
      0 28px 80px -24px rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(20px) saturate(160%);
    -webkit-backdrop-filter: blur(20px) saturate(160%);
  }

  .glass-elev {
    background: linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.06) 0%,
      rgba(255, 255, 255, 0.02) 100%
    );
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.08) inset,
      0 0 0 1px rgba(255, 255, 255, 0.10),
      0 32px 80px -24px rgba(0, 0, 0, 0.7);
  }

  /* ── Buttons ────────────────────────────────────────────────── */
  .btn-primary {
    @apply inline-flex items-center justify-center
           px-5 py-2.5 rounded-pill
           text-body-strong text-canvas
           bg-amber
           transition-all duration-200 ease-atelier
           active:scale-[0.97]
           disabled:opacity-40 disabled:cursor-not-allowed disabled:active:scale-100
           hover:bg-amber-soft hover:shadow-amber;
  }

  .btn-secondary {
    @apply inline-flex items-center justify-center
           px-5 py-2.5 rounded-pill
           text-body text-ink
           bg-glass
           transition-all duration-200 ease-atelier
           active:scale-[0.97]
           hover:bg-glass-stronger;
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.10);
  }

  .btn-ghost {
    @apply inline-flex items-center justify-center
           px-3 py-1.5 rounded-md
           text-caption text-ink-70
           transition-colors duration-200
           hover:text-ink hover:bg-glass;
  }

  .btn-danger {
    @apply inline-flex items-center justify-center
           px-5 py-2.5 rounded-pill
           text-body-strong text-status-err
           transition-colors duration-200
           hover:bg-status-err-glow;
    box-shadow: 0 0 0 1px rgba(255, 122, 122, 0.4);
  }

  /* ── Inputs ─────────────────────────────────────────────────── */
  .input-glass {
    @apply w-full bg-glass text-ink
           rounded-md px-4 py-3
           text-body
           outline-none
           transition-all duration-200;
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.10);
  }
  .input-glass:focus {
    background: rgba(255, 255, 255, 0.07);
    box-shadow: 0 0 0 1px rgba(255, 181, 69, 0.55),
      0 0 24px -6px rgba(255, 181, 69, 0.35);
  }
  .input-glass::placeholder {
    color: rgba(245, 243, 236, 0.36);
  }

  /* ── Cards ──────────────────────────────────────────────────── */
  .card {
    @apply rounded-lg p-6 glass;
  }

  /* ── Editorial italic moments ───────────────────────────────── */
  .serif-italic {
    font-family: var(--font-instrument), ui-serif, Georgia, serif;
    font-style: italic;
    font-weight: 400;
    letter-spacing: -0.01em;
  }

  /* ── Containers ─────────────────────────────────────────────── */
  .container-app {
    @apply max-w-[1480px] mx-auto px-6 md:px-10;
  }
  .container-narrow {
    @apply max-w-[920px] mx-auto px-6 md:px-10;
  }
  .container-prose {
    @apply max-w-[760px] mx-auto px-6 md:px-10;
  }

  /* ── Chat-specific helpers ──────────────────────────────────── */
  .chat-bubble-user {
    @apply rounded-2xl rounded-tr-sm px-5 py-3 text-body text-ink;
    background: linear-gradient(
      135deg,
      rgba(255, 181, 69, 0.16) 0%,
      rgba(255, 181, 69, 0.08) 100%
    );
    box-shadow: 0 0 0 1px rgba(255, 181, 69, 0.22),
      0 8px 24px -8px rgba(255, 181, 69, 0.18);
  }

  .chat-bubble-assistant {
    @apply rounded-2xl rounded-tl-sm px-5 py-4 text-body text-ink;
    background: linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.05) 0%,
      rgba(255, 255, 255, 0.025) 100%
    );
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.10),
      0 16px 48px -16px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
  }

  /* Hairline divider — for sectioning inside cards */
  .hairline {
    height: 1px;
    background: linear-gradient(
      90deg,
      transparent,
      rgba(255, 255, 255, 0.12),
      transparent
    );
  }
  .hairline-vert {
    width: 1px;
    background: linear-gradient(
      180deg,
      transparent,
      rgba(255, 255, 255, 0.10),
      transparent
    );
  }
}

/* ───────────────────────────────────────────────────────────────
   Utilities
   ─────────────────────────────────────────────────────────────── */
@layer utilities {
  .text-shimmer {
    background: linear-gradient(
      110deg,
      rgba(245, 243, 236, 0.4) 30%,
      rgba(245, 243, 236, 1) 50%,
      rgba(245, 243, 236, 0.4) 70%
    );
    background-size: 200% 100%;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: shimmerBg 2.4s linear infinite;
  }

  @keyframes shimmerBg {
    0% {
      background-position: 200% 0;
    }
    100% {
      background-position: -200% 0;
    }
  }

  /* Aurora gradient orbs (used decoratively behind hero) */
  .aurora-amber {
    position: absolute;
    border-radius: 9999px;
    background: radial-gradient(
      circle,
      rgba(255, 181, 69, 0.32) 0%,
      rgba(255, 181, 69, 0) 65%
    );
    filter: blur(80px);
    pointer-events: none;
  }
  .aurora-violet {
    position: absolute;
    border-radius: 9999px;
    background: radial-gradient(
      circle,
      rgba(120, 90, 240, 0.22) 0%,
      rgba(120, 90, 240, 0) 65%
    );
    filter: blur(90px);
    pointer-events: none;
  }
  .aurora-teal {
    position: absolute;
    border-radius: 9999px;
    background: radial-gradient(
      circle,
      rgba(80, 200, 200, 0.18) 0%,
      rgba(80, 200, 200, 0) 65%
    );
    filter: blur(80px);
    pointer-events: none;
  }

  /* No-scrollbar utility */
  .scrollbar-none {
    scrollbar-width: none;
  }
  .scrollbar-none::-webkit-scrollbar {
    display: none;
  }

  .text-balance {
    text-wrap: balance;
  }
}