@layer reset, tokens, base, layout, components, utilities, overrides;

@layer reset {
  *,
  *::before,
  *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    color-scheme: light dark;
  }

  img,
  picture,
  svg {
    display: block;
    max-inline-size: 100%;
  }

  button,
  input {
    font: inherit;
  }

  button {
    cursor: pointer;
  }

  ul,
  ol {
    list-style: none;
  }

  h1,
  h2,
  h3 {
    text-wrap: balance;
  }

  p {
    text-wrap: pretty;
  }
}

@layer tokens {
  :root {
    --font-family: system-ui, sans-serif;
    --font-size-xs: clamp(0.875rem, 0.857rem + 0.09vw, 0.9375rem);
    --font-size-sm: clamp(1rem, 0.964rem + 0.18vw, 1.125rem);
    --font-size-base: clamp(1.125rem, 1.089rem + 0.18vw, 1.25rem);
    --font-size-lg: clamp(1.375rem, 1.304rem + 0.36vw, 1.625rem);
    --font-size-xl: clamp(1.75rem, 1.607rem + 0.71vw, 2.25rem);
    --font-size-2xl: clamp(2.25rem, 2.036rem + 1.07vw, 3rem);
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.65;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --space-2xs: clamp(0.25rem, 0.214rem + 0.18vw, 0.375rem);
    --space-xs: clamp(0.5rem, 0.429rem + 0.36vw, 0.75rem);
    --space-sm: clamp(0.75rem, 0.679rem + 0.36vw, 1rem);
    --space-md: clamp(1rem, 0.857rem + 0.71vw, 1.5rem);
    --space-lg: clamp(1.5rem, 1.357rem + 0.71vw, 2rem);
    --space-xl: clamp(2rem, 1.714rem + 1.43vw, 3rem);
    --space-2xl: clamp(3rem, 2.714rem + 1.43vw, 4rem);
    --space-3xl: clamp(4rem, 3.429rem + 2.86vw, 6rem);
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;
    --duration-fast: 160ms;
    --duration-base: 240ms;
    --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
    --container-max: 80rem;
    --container-padding: var(--space-xl);
    --raw-blue-600: oklch(0.45 0.19 264);
    --raw-blue-400: oklch(0.72 0.14 250);
    --raw-blue-300: oklch(0.80 0.10 250);
    --raw-neutral-950: oklch(0.16 0.02 280);
    --raw-neutral-800: oklch(0.35 0.03 280);
    --raw-neutral-600: oklch(0.45 0.03 280);
    --raw-neutral-200: oklch(0.90 0.01 265);
    --raw-neutral-100: oklch(0.94 0.01 265);
    --raw-neutral-50: oklch(0.97 0.01 265);
  }

  [data-theme="light"] {
    --color-text: var(--raw-neutral-950);
    --color-text-secondary: var(--raw-neutral-800);
    --color-text-muted: var(--raw-neutral-600);
    --color-bg: var(--raw-neutral-50);
    --color-bg-elevated: oklch(1 0 0);
    --color-bg-hover: var(--raw-neutral-100);
    --color-bg-alt: oklch(0.95 0.02 265);
    --color-border: var(--raw-neutral-200);
    --color-border-hover: oklch(0.76 0.03 270);
    --color-primary: var(--raw-blue-600);
    --color-primary-hover: color-mix(in oklch, var(--raw-blue-600), black 15%);
    --color-primary-text: oklch(1 0 0);
    --color-focus: var(--raw-blue-400);
    --color-header-bg: oklch(1 0 0 / 0.92);
    --color-shadow: oklch(0 0 0 / 0.08);
    --color-shadow-lg: oklch(0 0 0 / 0.14);
    --shadow-sm: 0 1px 3px var(--color-shadow);
    --shadow-md: 0 4px 12px var(--color-shadow-lg), 0 2px 4px var(--color-shadow);
    --shadow-lg: 0 10px 30px var(--color-shadow-lg), 0 4px 8px var(--color-shadow);

    /* Twitch — violet clair */
    --color-platform: oklch(0.44 0.27 295);
    --color-platform-dark: color-mix(in oklch, oklch(0.44 0.27 295), black 18%);
    --color-platform-bg: color-mix(in oklch, oklch(0.44 0.27 295) 10%, oklch(1 0 0));
    --color-platform-text: oklch(1 0 0);
  }

  [data-theme="dark"] {
    --color-text: oklch(0.93 0.02 280);
    --color-text-secondary: oklch(0.73 0.04 275);
    --color-text-muted: oklch(0.61 0.04 275);
    --color-bg: oklch(0.15 0.02 270);
    --color-bg-elevated: oklch(0.20 0.03 275);
    --color-bg-hover: oklch(0.25 0.04 270);
    --color-bg-alt: oklch(0.22 0.04 270);
    --color-border: oklch(0.30 0.04 270);
    --color-border-hover: oklch(0.40 0.05 270);
    --color-primary: var(--raw-blue-400);
    --color-primary-hover: var(--raw-blue-300);
    --color-primary-text: oklch(0.15 0.02 270);
    --color-focus: oklch(0.80 0.10 250);
    --color-header-bg: oklch(0.15 0.02 270 / 0.92);
    --color-shadow: oklch(0 0 0 / 0.30);
    --color-shadow-lg: oklch(0 0 0 / 0.50);
    --shadow-sm: 0 1px 3px var(--color-shadow);
    --shadow-md: 0 4px 12px var(--color-shadow-lg), 0 2px 4px var(--color-shadow);
    --shadow-lg: 0 10px 30px var(--color-shadow-lg), 0 4px 8px var(--color-shadow);

    /* Twitch — violet sombre */
    --color-platform: oklch(0.72 0.20 295);
    --color-platform-dark: color-mix(in oklch, oklch(0.72 0.20 295), white 15%);
    --color-platform-bg: color-mix(in oklch, oklch(0.72 0.20 295) 12%, oklch(0.15 0.02 270));
    --color-platform-text: oklch(0.10 0.02 270);
  }
}

@layer base {
  html {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    background: var(--color-bg);
    color: var(--color-text);
  }

  body {
    min-block-size: 100dvh;
    display: flex;
    flex-direction: column;
  }

  a {
    color: var(--color-primary);
    text-underline-offset: 3px;
    text-decoration-thickness: 1px;
    transition: color var(--duration-fast) var(--ease-default);
  }

  a:hover {
    color: var(--color-primary-hover);
    text-decoration-thickness: 2px;
  }

  :focus-visible {
    outline: 3px solid var(--color-focus);
    outline-offset: 3px;
    border-radius: var(--radius-sm);
  }
}

@layer layout {
  .container {
    inline-size: 100%;
    max-inline-size: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-padding);
  }
}

@layer components {
  .skip-link {
    position: absolute;
    inset-block-start: -100%;
    inset-inline-start: var(--space-md);
    z-index: 9999;
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-primary);
    color: var(--color-primary-text);
    font-weight: var(--font-weight-bold);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: inset-block-start var(--duration-fast);
  }

  .skip-link:focus {
    inset-block-start: var(--space-md);
  }

  .header {
    position: sticky;
    inset-block-start: 0;
    z-index: 100;
    background: var(--color-header-bg);
    border-block-end: 1px solid var(--color-border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
  }

  .header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    padding-block: var(--space-sm);
  }

  .header__brand {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    text-decoration: none;
    color: var(--color-text);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
  }

  .header__brand:hover {
    color: var(--color-primary);
    text-decoration: none;
  }

  .header__logo {
    color: var(--color-primary);
    flex-shrink: 0;
  }

  .header__right {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
  }

  .header__platform {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-platform);
    background: var(--color-platform-bg);
    padding-block: 0.3rem;
    padding-inline: 0.75rem;
    border-radius: var(--radius-full);
    border: 1px solid color-mix(in oklch, var(--color-platform) 30%, transparent);
  }

  .header__platform img {
    inline-size: 1rem;
    block-size: 1rem;
    object-fit: contain;
    flex-shrink: 0;
  }

  .theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    inline-size: 2.75rem;
    block-size: 2.75rem;
    padding: 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    background: var(--color-bg-elevated);
    color: var(--color-text-secondary);
    flex-shrink: 0;
    transition:
      background var(--duration-fast) var(--ease-default),
      border-color var(--duration-fast) var(--ease-default),
      transform var(--duration-fast) var(--ease-default);
  }

  .theme-toggle:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-border-hover);
    transform: scale(1.05);
  }

  .theme-toggle:active {
    transform: scale(0.95);
  }

  [data-theme="light"] .theme-toggle__icon--sun { display: none; }
  [data-theme="light"] .theme-toggle__icon--moon { display: block; }
  [data-theme="dark"]  .theme-toggle__icon--sun  { display: block; }
  [data-theme="dark"]  .theme-toggle__icon--moon { display: none; }

  .hero {
    padding-block: var(--space-3xl) var(--space-2xl);
    background: var(--color-bg-alt);
    border-block-end: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
  }

  .hero::before {
    content: "";
    position: absolute;
    inset-block-start: 0;
    inset-inline: 0;
    block-size: 4px;
    background: var(--color-platform);
  }

  .hero__inner {
    display: flex;
    align-items: flex-start;
    gap: var(--space-xl);
    flex-wrap: wrap;
  }

  .hero__icon-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    inline-size: 5rem;
    block-size: 5rem;
    border-radius: var(--radius-xl);
    background: var(--color-platform-bg);
    flex-shrink: 0;
    border: 2px solid color-mix(in oklch, var(--color-platform) 25%, transparent);
    box-shadow: 0 0 0 8px color-mix(in oklch, var(--color-platform) 8%, transparent);
    overflow: hidden;
    padding: 0.75rem;
  }

  .hero__icon-wrap img {
    inline-size: 100%;
    block-size: 100%;
    object-fit: contain;
  }

  .hero__text {
    flex: 1;
    min-inline-size: 18rem;
  }

  .hero__eyebrow {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-platform);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-block-end: var(--space-xs);
  }

  .hero__title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    margin-block-end: var(--space-sm);
  }

  .hero__desc {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    max-inline-size: 56ch;
    margin-block-end: var(--space-md);
  }

  .hero__meta {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
    flex-wrap: wrap;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
  }

  .hero__meta-sep {
    opacity: 0.4;
  }

  .section {
    padding-block: var(--space-3xl);
  }

  .section__header {
    margin-block-end: var(--space-2xl);
  }

  .section__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    margin-block-end: var(--space-sm);
  }

  .section__desc {
    color: var(--color-text-secondary);
    max-inline-size: 60ch;
    line-height: var(--line-height-relaxed);
  }

  .channels-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 22rem), 1fr));
    gap: var(--space-lg);
  }

  .channel-wrapper {
    container-type: inline-size;
    container-name: channel;
  }

  .channel-card {
    display: flex;
    flex-direction: column;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    block-size: 100%;
    transition:
      box-shadow var(--duration-base) var(--ease-default),
      transform var(--duration-base) var(--ease-default),
      border-color var(--duration-base) var(--ease-default);
  }

  .channel-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: var(--color-border-hover);
  }

  .channel-card::before {
    content: "";
    display: block;
    block-size: 3px;
    background: var(--color-platform);
    flex-shrink: 0;
  }

  .channel-card--featured::before {
    block-size: 5px;
  }

  .channel-card__body {
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    flex: 1;
  }

  .channel-card__top {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
  }

  .channel-card__avatar {
    inline-size: 3.5rem;
    block-size: 3.5rem;
    border-radius: var(--radius-full);
    background: var(--color-platform-bg);
    color: var(--color-platform);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    flex-shrink: 0;
    border: 2px solid color-mix(in oklch, var(--color-platform) 30%, transparent);
    overflow: hidden;
  }

  .channel-card__avatar img {
    inline-size: 100%;
    block-size: 100%;
    object-fit: cover;
  }

  .channel-card__identity {
    flex: 1;
    min-inline-size: 0;
  }

  .channel-card__name {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    color: var(--color-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .channel-card__handle {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    display: block;
    margin-block-start: 0.2rem;
  }

  .channel-card__desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .channel-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2xs);
  }

  .channel-card__footer {
    padding: var(--space-md) var(--space-lg);
    border-block-start: 1px solid var(--color-border);
  }

  @container channel (min-inline-size: 360px) {
    .channel-card__desc {
      -webkit-line-clamp: 4;
    }
  }

  .badge {
    display: inline-flex;
    align-items: center;
    padding-block: 0.2rem;
    padding-inline: 0.6rem;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    white-space: nowrap;
    flex-shrink: 0;
  }

  .badge--official {
    background: var(--color-platform-bg);
    color: var(--color-platform);
    border: 1px solid color-mix(in oklch, var(--color-platform) 25%, transparent);
  }

  .badge--recommended {
    background: oklch(0.97 0.03 155);
    color: oklch(0.36 0.10 155);
    border: 1px solid oklch(0.88 0.07 155);
  }

  [data-theme="dark"] .badge--recommended {
    background: oklch(0.18 0.05 155);
    color: oklch(0.85 0.15 155);
    border-color: oklch(0.28 0.08 155);
  }

  .tag {
    display: inline-block;
    padding-block: 0.2rem;
    padding-inline: 0.6rem;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    background: var(--color-bg-hover);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding-block: 0.625rem;
    padding-inline: 1.25rem;
    min-block-size: 2.75rem;
    font-family: inherit;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    text-decoration: none;
    white-space: nowrap;
    transition:
      background var(--duration-fast) var(--ease-default),
      color var(--duration-fast) var(--ease-default),
      border-color var(--duration-fast) var(--ease-default),
      transform var(--duration-fast) var(--ease-default),
      box-shadow var(--duration-fast) var(--ease-default);
  }

  .btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
    text-decoration: none;
  }

  .btn:active {
    transform: scale(0.97);
  }

  .btn--platform {
    background: var(--color-platform);
    color: var(--color-platform-text);
    border-color: var(--color-platform);
  }

  .btn--platform:hover {
    background: var(--color-platform-dark);
    border-color: var(--color-platform-dark);
    color: var(--color-platform-text);
  }

  .btn--outline {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
  }

  .btn--outline:hover {
    background: var(--color-primary);
    color: var(--color-primary-text);
  }

  .btn--sm {
    padding-block: 0.4rem;
    padding-inline: 0.875rem;
    min-block-size: 2rem;
    font-size: var(--font-size-xs);
  }

  .btn--full {
    inline-size: 100%;
  }

  .disclaimer {
    background: var(--color-bg-alt);
    border-block-start: 1px solid var(--color-border);
    padding-block: var(--space-xl);
  }

  .disclaimer__inner {
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
  }

  .disclaimer__icon {
    color: var(--color-text-muted);
    flex-shrink: 0;
    margin-block-start: 2px;
  }

  .disclaimer__text {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
  }

  .disclaimer__text strong {
    color: var(--color-text);
  }

  .footer {
    margin-block-start: auto;
    background: var(--color-bg-elevated);
    border-block-start: 1px solid var(--color-border);
    padding-block: var(--space-xl);
  }

  .footer__inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
  }

  .footer__brand {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
  }

  .footer__brand:hover {
    color: var(--color-primary);
    text-decoration: none;
  }

  .footer__right {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    align-items: center;
  }

  .footer__link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
  }

  .footer__link:hover {
    color: var(--color-primary);
  }

  .footer__copy {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
  }
}

@layer utilities {
  .sr-only {
    position: absolute;
    inline-size: 1px;
    block-size: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
  }
}

@layer overrides {
  @media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
      animation-duration: 0.01ms !important;
      transition-duration: 0.01ms !important;
      scroll-behavior: auto !important;
    }
  }

  @media (pointer: coarse) {
    .btn { min-block-size: 3rem; }
    .theme-toggle { inline-size: 3rem; block-size: 3rem; }
  }

  @media (prefers-contrast: more) {
    :root {
      --color-border: oklch(0.5 0.03 270);
      --color-text-muted: oklch(0.35 0.03 280);
    }
  }

  @media (forced-colors: active) {
    .channel-card { border: 2px solid ButtonText; }
    .btn { border: 2px solid ButtonText; }
    :focus-visible { outline-color: Highlight; }
  }

  @media (max-width: 40em) {
    :root { --container-padding: var(--space-md); }
    .hero__inner { flex-direction: column; }
    .hero__icon-wrap { inline-size: 3.5rem; block-size: 3.5rem; }
    .channels-grid { grid-template-columns: 1fr; }
  }

  @media print {
    .header,
    .footer,
    .theme-toggle,
    .skip-link,
    .disclaimer { display: none !important; }

    .channel-card {
      box-shadow: none;
      border: 1px solid #ccc;
      break-inside: avoid;
    }

    a[href^="http"]::after {
      content: " (" attr(href) ")";
      font-size: 0.8em;
      color: #555;
    }
  }
}