/* ═══════════════════════════════════════════════════════════════════
   AnimeRank v9 — FOUNDATION
   Reset · Tokens · Base · Typography · Critical utilities
   Load order: 1 of 5  (critical, blocking)
═══════════════════════════════════════════════════════════════════ */

@layer reset, tokens, base, typography, a11y, utilities-critical;

/* ──────────────────────────────────────────────────────────────────
   RESET — modern, opinionated minimal reset
────────────────────────────────────────────────────────────────── */
@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; tab-size: 4; }
  body, h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; }
  ul, ol { padding: 0; margin: 0; }
  ul[role="list"], ol[role="list"] { list-style: none; }
  html:focus-within { scroll-behavior: smooth; }
  body { min-height: 100dvh; line-height: 1.5; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
  h1, h2, h3, h4, button, input, label { line-height: 1.15; }
  h1, h2, h3, h4 { text-wrap: balance; }
  p, li { text-wrap: pretty; }
  a:not([class]) { text-decoration-skip-ink: auto; color: currentColor; }
  img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
  input, button, textarea, select { font: inherit; color: inherit; }
  button { background: none; border: 0; padding: 0; cursor: pointer; }
  textarea:not([rows]) { min-height: 10em; }
  :target { scroll-margin-block: 5ex; }
  details > summary { cursor: pointer; }
  hr { border: 0; border-top: 1px solid var(--border-subtle); margin: var(--space-md) 0; }
}

/* ──────────────────────────────────────────────────────────────────
   TOKENS — single source of truth
────────────────────────────────────────────────────────────────── */
@layer tokens {
  :root {
    color-scheme: dark;

    /* ═════ Brand crimson scale — Netflix red, 12-step + alpha ═════ */
    --c-crimson-1:  #0d0203;
    --c-crimson-2:  #170406;
    --c-crimson-3:  #220609;
    --c-crimson-4:  #2e070b;
    --c-crimson-5:  #3d090e;
    --c-crimson-6:  #500b12;
    --c-crimson-7:  #6c0d17;
    --c-crimson-8:  #93101e;
    --c-crimson-9:  #e50914;
    --c-crimson-10: #f6121d;
    --c-crimson-11: #ff5a63;
    --c-crimson-12: #ffc8cc;

    --c-crimson-a1:  rgba(229, 9, 20, 0.04);
    --c-crimson-a2:  rgba(229, 9, 20, 0.07);
    --c-crimson-a3:  rgba(229, 9, 20, 0.10);
    --c-crimson-a4:  rgba(229, 9, 20, 0.14);
    --c-crimson-a5:  rgba(229, 9, 20, 0.20);
    --c-crimson-a6:  rgba(229, 9, 20, 0.28);
    --c-crimson-a7:  rgba(229, 9, 20, 0.38);
    --c-crimson-a8:  rgba(229, 9, 20, 0.52);
    --c-crimson-a9:  rgba(229, 9, 20, 0.68);
    --c-crimson-a10: rgba(229, 9, 20, 0.80);
    --c-crimson-a11: rgba(255, 90, 99, 0.88);
    --c-crimson-a12: rgba(255, 200, 204, 0.95);

    /* ═════ Neutral ink scale ═════ */
    --c-ink-1:  #0a0a0c;
    --c-ink-2:  #111114;
    --c-ink-3:  #18181b;
    --c-ink-4:  #1e1e22;
    --c-ink-5:  #25252a;
    --c-ink-6:  #2d2d33;
    --c-ink-7:  #3a3a42;
    --c-ink-8:  #525259;
    --c-ink-9:  #6e6e76;
    --c-ink-10: #7e7e88;
    --c-ink-11: #b0b0b8;
    --c-ink-12: #ededee;

    --c-ink-a1:  rgba(255, 255, 255, 0.02);
    --c-ink-a2:  rgba(255, 255, 255, 0.04);
    --c-ink-a3:  rgba(255, 255, 255, 0.07);
    --c-ink-a4:  rgba(255, 255, 255, 0.10);
    --c-ink-a5:  rgba(255, 255, 255, 0.13);
    --c-ink-a6:  rgba(255, 255, 255, 0.17);
    --c-ink-a7:  rgba(255, 255, 255, 0.22);
    --c-ink-a8:  rgba(255, 255, 255, 0.32);
    --c-ink-a9:  rgba(255, 255, 255, 0.42);
    --c-ink-a10: rgba(255, 255, 255, 0.50);
    --c-ink-a11: rgba(255, 255, 255, 0.70);
    --c-ink-a12: rgba(255, 255, 255, 0.93);

    /* ═════ Semantic surfaces ═════ */
    --surface-canvas:      var(--c-ink-1);
    --surface-base:        var(--c-ink-2);
    --surface-elevated:    var(--c-ink-3);
    --surface-overlay:     color-mix(in srgb, var(--c-ink-4) 92%, transparent);
    --surface-interactive: var(--c-ink-3);
    --surface-interactive-hover: var(--c-ink-4);
    --surface-interactive-active: var(--c-ink-5);
    --surface-glass:       color-mix(in srgb, var(--c-ink-1) 38%, transparent);
    --surface-glass-strong:color-mix(in srgb, var(--c-ink-1) 55%, transparent);

    /* ═════ Borders ═════ */
    --border-subtle:  var(--c-ink-a4);
    --border-default: var(--c-ink-a6);
    --border-strong:  var(--c-ink-a8);
    --border-focus:   var(--c-crimson-8);

    /* ═════ Text ═════ */
    --text-primary:   var(--c-ink-12);
    --text-secondary: var(--c-ink-11);
    --text-tertiary:  var(--c-ink-10);
    --text-disabled:  var(--c-ink-8);
    --text-on-brand:  #ffffff;
    --text-link:      var(--c-crimson-11);

    /* ═════ Brand ═════ */
    --brand:        var(--c-crimson-9);
    --brand-hover:  var(--c-crimson-10);
    --brand-active: var(--c-crimson-8);
    --brand-subtle: var(--c-crimson-a3);
    --brand-border: var(--c-crimson-a7);
    --brand-text:   var(--c-crimson-11);

    /* ═════ Status colors ═════ */
    --status-watching:  #2ed573;
    --status-completed: #5352ed;
    --status-on-hold:   #ffa502;
    --status-dropped:   #e50914;
    --status-planning:  #747d8c;
    --status-success:   #2ed573;
    --status-info:      #5352ed;
    --status-warning:   #ffa502;
    --status-danger:    #e50914;

    /* ═════ Typography ═════ */
    --font-sans: 'Outfit', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, Consolas, 'Liberation Mono', monospace;

    --text-xs:    clamp(0.6875rem, 0.66rem + 0.14vw, 0.75rem);
    --text-sm:    clamp(0.8125rem, 0.79rem + 0.14vw, 0.875rem);
    --text-base:  clamp(0.9375rem, 0.91rem + 0.14vw, 1rem);
    --text-md:    clamp(1.0625rem, 1.02rem + 0.21vw, 1.125rem);
    --text-lg:    clamp(1.25rem, 1.18rem + 0.36vw, 1.375rem);
    --text-xl:    clamp(1.5rem, 1.36rem + 0.71vw, 1.75rem);
    --text-2xl:   clamp(1.875rem, 1.66rem + 1.07vw, 2.25rem);
    --text-3xl:   clamp(2.375rem, 1.6rem + 3.87vw, 3.5rem);

    --w-light:    300;
    --w-regular:  400;
    --w-medium:   500;
    --w-semibold: 600;
    --w-bold:     700;
    --w-black:    800;

    --leading-tight:   1.15;
    --leading-snug:    1.3;
    --leading-normal:  1.5;
    --leading-relaxed: 1.65;

    --tracking-tighter: -0.04em;
    --tracking-tight:   -0.02em;
    --tracking-normal:  0;
    --tracking-wide:    0.02em;
    --tracking-widest:  0.08em;

    /* ═════ Spacing (8pt grid) ═════ */
    --space-3xs: 2px;
    --space-2xs: 4px;
    --space-xs:  8px;
    --space-sm:  12px;
    --space-md:  16px;
    --space-lg:  24px;
    --space-xl:  32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    --space-4xl: 96px;

    /* ═════ Fluid gutters ═════ */
    --gutter-page:    clamp(1rem, 0.5rem + 2.5vw, 2rem);
    --gutter-section: clamp(2rem, 1rem + 5vw, 4rem);
    --gutter-hero:    clamp(3rem, 1.5rem + 7.5vw, 6rem);

    /* ═════ Radius ═════ */
    --radius-xs:   4px;
    --radius-sm:   8px;
    --radius-md:   12px;
    --radius-lg:   16px;
    --radius-xl:   24px;
    --radius-full: 9999px;

    /* ═════ Elevation ═════ */
    --elevation-0: none;
    --elevation-1: 0 1px 2px rgba(0,0,0,0.30), 0 1px 3px rgba(0,0,0,0.18);
    --elevation-2: 0 4px 8px rgba(0,0,0,0.35), 0 2px 4px rgba(0,0,0,0.25);
    --elevation-3: 0 24px 48px rgba(0,0,0,0.55), 0 12px 24px rgba(0,0,0,0.40), 0 4px 8px rgba(0,0,0,0.30);
    --elevation-crimson: 0 8px 24px rgba(229,9,20,0.50), 0 4px 12px rgba(229,9,20,0.32);

    /* ═════ Animation ═════ */
    --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
    --ease-out-expo:  cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring:    cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-in-out:    cubic-bezier(0.65, 0, 0.35, 1);

    --dur-instant: 100ms;
    --dur-fast:    200ms;
    --dur-base:    300ms;
    --dur-slow:    500ms;
    --dur-slower:  800ms;

    /* ═════ Layout primitives ═════ */
    /* Akışkan (fluid) tavan: sabit px yerine vw-tabanlı clamp — küçük ekranda
       eskisiyle aynı davranır, geniş ekranda (27"+/2K/ultra-wide) içerik
       viewport'a orantılı büyür, sabit-genişlik + boş yan-boşluk sorunu biter. */
    --container-max:      clamp(320px, 90vw, 2200px);
    --container-narrow:   860px;
    --container-wide:     clamp(320px, 94vw, 2400px);
    --header-height:      64px;
    --footer-min-height:  320px;
    --z-dropdown:   1000;
    --z-sticky:     1010;
    --z-fixed:      1020;
    --z-modal-bg:   1030;
    --z-modal:      1040;
    --z-popover:    1050;
    --z-tooltip:    1060;
    --z-toast:      1070;
  }

  /* ═════ Light theme ═════ */
  [data-theme="light"] {
    color-scheme: light;

    --c-ink-1:  #fafafb;
    --c-ink-2:  #f3f3f5;
    --c-ink-3:  #ebebee;
    --c-ink-4:  #e1e1e6;
    --c-ink-5:  #d4d4da;
    --c-ink-6:  #c2c2c9;
    --c-ink-7:  #a8a8b2;
    --c-ink-8:  #84848e;
    --c-ink-9:  #6c6c75;
    --c-ink-10: #525259;
    --c-ink-11: #2e2e33;
    --c-ink-12: #0a0a0c;

    --c-ink-a1:  rgba(0, 0, 0, 0.025);
    --c-ink-a2:  rgba(0, 0, 0, 0.05);
    --c-ink-a3:  rgba(0, 0, 0, 0.075);
    --c-ink-a4:  rgba(0, 0, 0, 0.10);
    --c-ink-a5:  rgba(0, 0, 0, 0.13);
    --c-ink-a6:  rgba(0, 0, 0, 0.17);
    --c-ink-a7:  rgba(0, 0, 0, 0.22);
    --c-ink-a8:  rgba(0, 0, 0, 0.30);
    --c-ink-a9:  rgba(0, 0, 0, 0.42);
    --c-ink-a10: rgba(0, 0, 0, 0.55);
    --c-ink-a11: rgba(0, 0, 0, 0.72);
    --c-ink-a12: rgba(0, 0, 0, 0.92);

    --c-crimson-9:  #d50812;
    --c-crimson-10: #b40610;
    --c-crimson-11: #8a040c;
    --c-crimson-12: #5a0207;

    --surface-glass: color-mix(in srgb, #ffffff 75%, transparent);

    --elevation-1: 0 1px 2px rgba(20,20,30,0.08), 0 1px 3px rgba(20,20,30,0.05);
    --elevation-2: 0 4px 8px rgba(20,20,30,0.10), 0 2px 4px rgba(20,20,30,0.06);
    --elevation-3: 0 24px 48px rgba(20,20,30,0.18), 0 12px 24px rgba(20,20,30,0.12), 0 4px 8px rgba(20,20,30,0.08);
  }

  @media (prefers-color-scheme: light) {
    :root:not([data-theme="dark"]) {
      color-scheme: light;
      --c-ink-1:  #fafafb; --c-ink-2:  #f3f3f5; --c-ink-3:  #ebebee;
      --c-ink-4:  #e1e1e6; --c-ink-5:  #d4d4da; --c-ink-6:  #c2c2c9;
      --c-ink-7:  #a8a8b2; --c-ink-8:  #84848e; --c-ink-9:  #6c6c75;
      --c-ink-10: #525259; --c-ink-11: #2e2e33; --c-ink-12: #0a0a0c;
      --c-ink-a1:  rgba(0,0,0,0.025); --c-ink-a2:  rgba(0,0,0,0.05);
      --c-ink-a3:  rgba(0,0,0,0.075); --c-ink-a4:  rgba(0,0,0,0.10);
      --c-ink-a5:  rgba(0,0,0,0.13);  --c-ink-a6:  rgba(0,0,0,0.17);
      --c-ink-a7:  rgba(0,0,0,0.22);  --c-ink-a8:  rgba(0,0,0,0.30);
      --c-ink-a9:  rgba(0,0,0,0.42);  --c-ink-a10: rgba(0,0,0,0.55);
      --c-ink-a11: rgba(0,0,0,0.72);  --c-ink-a12: rgba(0,0,0,0.92);
      --c-crimson-9:  #d50812; --c-crimson-10: #b40610;
      --c-crimson-11: #8a040c; --c-crimson-12: #5a0207;
      --surface-glass: color-mix(in srgb, #ffffff 75%, transparent);
    }
  }
}

/* ──────────────────────────────────────────────────────────────────
   BASE — body, root containers, scrollbar
────────────────────────────────────────────────────────────────── */
@layer base {
  html, body { background: var(--surface-canvas); color: var(--text-primary); }
  body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    font-weight: var(--w-regular);
    line-height: var(--leading-normal);
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
  }

  /* Page container */
  .page {
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
  }
  .page__main { flex: 1; }

  /* Scrollbar (WebKit / Blink) */
  ::-webkit-scrollbar { width: 12px; height: 12px; }
  ::-webkit-scrollbar-track { background: transparent; }
  ::-webkit-scrollbar-thumb {
    background: var(--c-ink-a5);
    border: 3px solid transparent;
    background-clip: padding-box;
    border-radius: var(--radius-full);
  }
  ::-webkit-scrollbar-thumb:hover { background-color: var(--c-ink-a8); background-clip: padding-box; }
  ::-webkit-scrollbar-corner { background: transparent; }
  * { scrollbar-width: thin; scrollbar-color: var(--c-ink-a5) transparent; }

  /* Selection */
  ::selection { background: var(--c-crimson-a6); color: var(--text-primary); }

  /* Image defaults */
  img { color: transparent; font-style: italic; }

  /* Links (unclassed) */
  a:not([class]) { color: var(--text-link); text-underline-offset: 0.18em; }
  a:not([class]):hover { color: var(--c-crimson-12); }
}

/* ──────────────────────────────────────────────────────────────────
   TYPOGRAPHY — heading scale, prose
────────────────────────────────────────────────────────────────── */
@layer typography {
  h1, .h1 { font-size: var(--text-3xl); font-weight: var(--w-bold); line-height: var(--leading-tight); letter-spacing: var(--tracking-tighter); }
  h2, .h2 { font-size: var(--text-2xl); font-weight: var(--w-bold); line-height: var(--leading-tight); letter-spacing: var(--tracking-tight); }
  h3, .h3 { font-size: var(--text-xl); font-weight: var(--w-semibold); line-height: var(--leading-snug); letter-spacing: var(--tracking-tight); }
  h4, .h4 { font-size: var(--text-lg); font-weight: var(--w-semibold); line-height: var(--leading-snug); }
  h5, .h5 { font-size: var(--text-md); font-weight: var(--w-semibold); line-height: var(--leading-snug); }
  h6, .h6 { font-size: var(--text-base); font-weight: var(--w-semibold); line-height: var(--leading-snug); text-transform: uppercase; letter-spacing: var(--tracking-widest); }

  .lead { font-size: var(--text-md); color: var(--text-secondary); line-height: var(--leading-relaxed); max-width: 65ch; }
  .muted { color: var(--text-tertiary); }
  .display { font-size: clamp(3rem, 1rem + 8vw, 5.5rem); font-weight: var(--w-black); line-height: 1; letter-spacing: var(--tracking-tighter); }

  small, .text-sm { font-size: var(--text-sm); }
  .text-xs { font-size: var(--text-xs); }

  kbd {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.4em;
    padding: 0 var(--space-2xs);
    font-family: var(--font-mono);
    font-size: 0.75em;
    line-height: 1.4;
    background: var(--c-ink-a3);
    border: 1px solid var(--border-subtle);
    border-bottom-width: 2px;
    border-radius: var(--radius-xs);
    color: var(--text-secondary);
  }

  code:not(pre > code) {
    font-family: var(--font-mono);
    font-size: 0.9em;
    padding: 2px 6px;
    background: var(--c-ink-a3);
    border-radius: var(--radius-xs);
  }

  blockquote {
    border-inline-start: 3px solid var(--brand);
    padding-inline-start: var(--space-md);
    color: var(--text-secondary);
    font-style: italic;
  }
}

/* ──────────────────────────────────────────────────────────────────
   ACCESSIBILITY — focus, sr-only, reduced motion
────────────────────────────────────────────────────────────────── */
@layer a11y {
  /* Suppress mouse-only focus, keep keyboard */
  :focus { outline: none; }
  :focus-visible {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
    border-radius: inherit;
  }
  /* Inputs get inset focus, not outset */
  .input:focus-visible, .select:focus-visible, .textarea:focus-visible {
    outline: 0;
    border-color: var(--brand);
    box-shadow: 0 0 0 3px var(--c-crimson-a4);
  }

  /* Skip link */
  .skip-link {
    position: absolute;
    top: -40px;
    inset-inline-start: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    background: var(--brand);
    color: var(--text-on-brand);
    border-radius: var(--radius-sm);
    z-index: var(--z-toast);
    transition: top var(--dur-fast) var(--ease-out-quart);
  }
  .skip-link:focus-visible { top: var(--space-md); }

  /* Visually-hidden but available to AT */
  .sr-only {
    position: absolute !important;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0, 0, 0, 0);
    white-space: nowrap; border: 0;
  }
  .sr-only-focusable:focus { position: static !important; width: auto; height: auto; clip: auto; white-space: normal; }

  /* Reduced motion — preserve crucial feedback at 1ms */
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
      animation-duration: 1ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 1ms !important;
      scroll-behavior: auto !important;
    }
  }

  /* High-contrast (Windows) */
  @media (forced-colors: active) {
    .btn { border: 1px solid CanvasText; }
    :focus-visible { outline-color: Highlight; }
  }

  /* Touch target floor */
  button, a.btn, [role="button"] { min-height: 44px; min-width: 44px; }
  /* Inline link buttons exempt (text-flow) */
  a:not([class]), .btn-inline { min-height: 0; min-width: 0; }
}

/* ──────────────────────────────────────────────────────────────────
   CRITICAL UTILITIES — layout primitives needed above the fold
────────────────────────────────────────────────────────────────── */
@layer utilities-critical {
  .container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--gutter-page);
  }
  .container--narrow { max-width: var(--container-narrow); }
  .container--wide   { max-width: var(--container-wide); }

  .stack > * + * { margin-block-start: var(--space-md); }
  .stack--xs > * + * { margin-block-start: var(--space-xs); }
  .stack--sm > * + * { margin-block-start: var(--space-sm); }
  .stack--lg > * + * { margin-block-start: var(--space-lg); }
  .stack--xl > * + * { margin-block-start: var(--space-xl); }

  .flex { display: flex; }
  .inline-flex { display: inline-flex; }
  .grid { display: grid; }
  .block { display: block; }
  .hidden { display: none !important; }

  .items-center { align-items: center; }
  .items-start  { align-items: flex-start; }
  .items-end    { align-items: flex-end; }
  .justify-center  { justify-content: center; }
  .justify-between { justify-content: space-between; }
  .justify-end     { justify-content: flex-end; }

  .gap-xs { gap: var(--space-xs); }
  .gap-sm { gap: var(--space-sm); }
  .gap-md { gap: var(--space-md); }
  .gap-lg { gap: var(--space-lg); }

  /* No-FOUC pre-paint helper for theme switching */
  .no-fouc { visibility: hidden; }
  .no-fouc.is-ready { visibility: visible; }
}