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

@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  body, h1, h2, h3, p, ul, ol, figure { margin: 0; }
  ul, ol { padding: 0; list-style: none; }
  img, svg { display: block; max-inline-size: 100%; }
  button, input, select, textarea { font: inherit; color: inherit; }
  button { cursor: pointer; border: 0; background: none; }
  a { color: inherit; text-decoration: none; }
  fieldset { margin: 0; padding: 0; border: 0; min-inline-size: 0; }
  table { border-collapse: collapse; inline-size: 100%; }
  [hidden] { display: none !important; }
}

@layer base {
  :root {
    color-scheme: light dark;

    --c-bg-light: #f4f6f9;
    --c-bg-dark: #0f1419;
    --c-surface-light: #ffffff;
    --c-surface-dark: #171d25;
    --c-surface-2-light: #eef1f6;
    --c-surface-2-dark: #1f2733;
    --c-line-light: #dde3ec;
    --c-line-dark: #2b3542;
    --c-text-light: #121720;
    --c-text-dark: #e8edf4;
    --c-muted-light: #5d6b7f;
    --c-muted-dark: #94a3b8;
    --c-brand-light: #1a56db;
    --c-brand-dark: #6b9dff;
    --c-on-brand-light: #ffffff;
    --c-on-brand-dark: #0b1220;
    --c-ok-light: #1a7f45;
    --c-ok-dark: #4ade80;
    --c-bad-light: #c02626;
    --c-bad-dark: #f87171;
    --c-warn-light: #a35a00;
    --c-warn-dark: #fbbf24;

    --c-bg: var(--c-bg-light);
    --c-surface: var(--c-surface-light);
    --c-surface-2: var(--c-surface-2-light);
    --c-line: var(--c-line-light);
    --c-text: var(--c-text-light);
    --c-muted: var(--c-muted-light);
    --c-brand: var(--c-brand-light);
    --c-on-brand: var(--c-on-brand-light);
    --c-ok: var(--c-ok-light);
    --c-bad: var(--c-bad-light);
    --c-warn: var(--c-warn-light);

    @media (prefers-color-scheme: dark) {
      --c-bg: var(--c-bg-dark);
      --c-surface: var(--c-surface-dark);
      --c-surface-2: var(--c-surface-2-dark);
      --c-line: var(--c-line-dark);
      --c-text: var(--c-text-dark);
      --c-muted: var(--c-muted-dark);
      --c-brand: var(--c-brand-dark);
      --c-on-brand: var(--c-on-brand-dark);
      --c-ok: var(--c-ok-dark);
      --c-bad: var(--c-bad-dark);
      --c-warn: var(--c-warn-dark);
    }

    @supports (color: light-dark(#fff, #000)) {
      --c-bg: light-dark(var(--c-bg-light), var(--c-bg-dark));
      --c-surface: light-dark(var(--c-surface-light), var(--c-surface-dark));
      --c-surface-2: light-dark(var(--c-surface-2-light), var(--c-surface-2-dark));
      --c-line: light-dark(var(--c-line-light), var(--c-line-dark));
      --c-text: light-dark(var(--c-text-light), var(--c-text-dark));
      --c-muted: light-dark(var(--c-muted-light), var(--c-muted-dark));
      --c-brand: light-dark(var(--c-brand-light), var(--c-brand-dark));
      --c-on-brand: light-dark(var(--c-on-brand-light), var(--c-on-brand-dark));
      --c-ok: light-dark(var(--c-ok-light), var(--c-ok-dark));
      --c-bad: light-dark(var(--c-bad-light), var(--c-bad-dark));
      --c-warn: light-dark(var(--c-warn-light), var(--c-warn-dark));
    }

    --shell: 1280px;
    --gap: 16px;
    --radius: 8px;
    --radius-sm: 6px;
    accent-color: var(--c-brand);
    scrollbar-color: var(--c-muted) transparent;
  }

  :root.theme-light { color-scheme: light; }
  :root.theme-dark { color-scheme: dark; }

  body {
    background: var(--c-bg);
    color: var(--c-text);
    font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    font-size: 14px;
    line-height: 1.45;
    -webkit-text-size-adjust: 100%;
  }

  :where(a, button, input, select, textarea):focus-visible {
    outline: 2px solid var(--c-brand);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
  }
}

@layer layout {
  .shell {
    inline-size: min(100% - 2 * var(--gap), var(--shell));
    margin-inline: auto;
  }

  .page {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
    padding-block: 20px 48px;
  }

  .page--wide { grid-template-columns: minmax(0, 1fr); }

  @media (max-width: 1023px) {
    .page { grid-template-columns: minmax(0, 1fr); }
  }

  .auth {
    display: grid;
    place-items: center;
    min-block-size: 100svh;
    padding: 24px 16px;
  }
}

@layer components {
  .topbar {
    background: var(--c-surface);
    border-block-end: 1px solid var(--c-line);
  }
  .topbar__inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 20px;
    min-block-size: 40px;
    padding-block: 6px;
  }
  .topbar__side { margin-inline-start: auto; }

  .contact {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 6px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    white-space: nowrap;
    transition: color .15s, background-color .15s;
  }
  .contact:hover { color: var(--c-brand); background: var(--c-surface-2); }

  .theme-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 10px;
    border: 1px solid var(--c-line);
    border-radius: 999px;
    color: var(--c-muted);
    white-space: nowrap;
    transition: color .15s, border-color .15s;
  }
  .theme-toggle:hover { color: var(--c-brand); border-color: var(--c-brand); }
  .theme-toggle__icon { inline-size: 15px; block-size: 15px; flex: none; }
  .theme-toggle__icon--sun { display: none; }
  :root.theme-dark .theme-toggle__icon--moon { display: none; }
  :root.theme-dark .theme-toggle__icon--sun { display: block; }
  @media (prefers-color-scheme: dark) {
    :root:not(.theme-light) .theme-toggle__icon--moon { display: none; }
    :root:not(.theme-light) .theme-toggle__icon--sun { display: block; }
  }

  .masthead {
    position: sticky;
    inset-block-start: 0;
    z-index: 20;
    background: var(--c-surface);
    border-block-end: 1px solid var(--c-line);
  }
  .masthead__inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    padding-block: 12px;
  }
  .masthead__search { flex: 1 1 320px; min-inline-size: 0; }
  .masthead__side {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-inline-start: auto;
  }

  .logo {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 17px;
    font-weight: 700;
    flex: none;
  }
  .logo__mark {
    display: grid;
    place-items: center;
    inline-size: 30px;
    block-size: 30px;
    border-radius: var(--radius-sm);
    background: var(--c-brand);
    color: var(--c-on-brand);
    font-size: 15px;
    flex: none;
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-block-size: 40px;
    padding: 0 14px;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font-weight: 600;
    white-space: nowrap;
    transition: background-color .15s, color .15s, border-color .15s;
  }
  .btn__icon { inline-size: 16px; block-size: 16px; flex: none; }
  .btn--primary { background: var(--c-brand); color: var(--c-on-brand); }
  .btn--primary:hover { background: color-mix(in oklab, var(--c-brand), #000 12%); }
  .btn--ghost { border-color: var(--c-line); color: var(--c-text); }
  .btn--ghost:hover { border-color: var(--c-brand); color: var(--c-brand); }
  .btn--block { inline-size: 100%; }
  .btn--sm { min-block-size: 32px; padding: 0 10px; font-size: 13px; }

  .card {
    inline-size: min(100%, 380px);
    padding: 28px 24px;
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    background: var(--c-surface);
  }
  .card__title {
    margin-block-end: 20px;
    font-size: 20px;
    line-height: 1.2;
    text-align: center;
  }

  .form { display: grid; gap: 14px; }

  .field { display: grid; gap: 6px; min-inline-size: 0; }
  .field__label { font-size: 13px; font-weight: 600; color: var(--c-muted); }
  .field__hint { font-size: 12px; color: var(--c-muted); }

  .input,
  .select,
  .textarea {
    inline-size: 100%;
    min-inline-size: 0;
    min-block-size: 40px;
    padding: 0 12px;
    border: 1px solid var(--c-line);
    border-radius: var(--radius-sm);
    background: var(--c-surface);
    transition: border-color .15s;
  }
  .textarea { min-block-size: 96px; padding-block: 10px; }
  .input::placeholder { color: var(--c-muted); }
  .input:focus,
  .select:focus,
  .textarea:focus { border-color: var(--c-brand); }

  :root { --select-arrow: url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%2210%22%20height%3D%226%22%20viewBox%3D%220%200%2010%206%22%3E%3Cpath%20d%3D%22M1%201l4%204%204-4%22%20fill%3D%22none%22%20stroke%3D%22%235d6b7f%22%20stroke-width%3D%221.5%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%2F%3E%3C%2Fsvg%3E"); }
  @media (prefers-color-scheme: dark) {
    :root { --select-arrow: url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%2210%22%20height%3D%226%22%20viewBox%3D%220%200%2010%206%22%3E%3Cpath%20d%3D%22M1%201l4%204%204-4%22%20fill%3D%22none%22%20stroke%3D%22%2394a3b8%22%20stroke-width%3D%221.5%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%2F%3E%3C%2Fsvg%3E"); }
  }
  :root.theme-light { --select-arrow: url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%2210%22%20height%3D%226%22%20viewBox%3D%220%200%2010%206%22%3E%3Cpath%20d%3D%22M1%201l4%204%204-4%22%20fill%3D%22none%22%20stroke%3D%22%235d6b7f%22%20stroke-width%3D%221.5%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%2F%3E%3C%2Fsvg%3E"); }
  :root.theme-dark { --select-arrow: url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%2210%22%20height%3D%226%22%20viewBox%3D%220%200%2010%206%22%3E%3Cpath%20d%3D%22M1%201l4%204%204-4%22%20fill%3D%22none%22%20stroke%3D%22%2394a3b8%22%20stroke-width%3D%221.5%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%2F%3E%3C%2Fsvg%3E"); }

  .select {
    appearance: none;
    background-image: var(--select-arrow);
    background-repeat: no-repeat;
    background-position: right 10px center;
    background-size: 10px 6px;
    padding-inline-end: 30px;
    cursor: pointer;
  }

  .check {
    display: flex;
    align-items: center;
    gap: 8px;
    min-inline-size: 0;
    cursor: pointer;
  }
  .check__box { inline-size: 16px; block-size: 16px; flex: none; margin: 0; }

  .divider {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 10px;
    margin-block: 20px;
    color: var(--c-muted);
    font-size: 12px;
  }
  .divider::before,
  .divider::after { content: ""; block-size: 1px; background: var(--c-line); }

  .modal {
    inline-size: min(100% - 24px, 440px);
    max-block-size: calc(100svh - 24px);
    padding: 0;
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    background: var(--c-surface);
    color: var(--c-text);
    overflow: auto;
    overscroll-behavior: contain;
  }
  .modal::backdrop { background: rgb(0 0 0 / .5); }
  .modal__inner { padding: 24px; }
  .modal__head { display: flex; align-items: start; gap: 12px; margin-block-end: 4px; }
  .modal__title { font-size: 18px; line-height: 1.25; }
  .modal__close {
    flex: none;
    display: grid;
    place-items: center;
    inline-size: 32px;
    block-size: 32px;
    margin-inline-start: auto;
    border-radius: var(--radius-sm);
    color: var(--c-muted);
    transition: color .15s, background-color .15s;
  }
  .modal__close:hover { color: var(--c-text); background: var(--c-surface-2); }
  .modal__close svg { inline-size: 16px; block-size: 16px; }
  .modal__lead { margin-block-end: 18px; color: var(--c-muted); font-size: 13px; }
  .modal__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-block-start: 4px;
  }
  .modal__actions .btn { flex: 1 1 140px; }

  .alert {
    padding: 10px 12px;
    border: 1px solid var(--c-line);
    border-radius: var(--radius-sm);
    background: var(--c-surface-2);
    font-size: 13px;
  }
  .alert--error { border-color: var(--c-bad); color: var(--c-bad); }

  .widget {
    padding: 16px;
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    background: var(--c-surface);
  }
  .widget + .widget { margin-block-start: 16px; }
  .widget__title { margin-block-end: 12px; font-size: 15px; }

  .aside { min-inline-size: 0; }
  @media (min-width: 1024px) {
    .aside { position: sticky; inset-block-start: 76px; }
  }

  .content { min-inline-size: 0; }
  .content__title { margin-block-end: 16px; font-size: 22px; line-height: 1.2; }
  .content__meta { margin-block-end: 20px; color: var(--c-muted); }

  .entry + .entry { margin-block-start: 24px; }
  .entry__title { font-size: 17px; }
  .entry__title a:hover { color: var(--c-brand); }

  .footer {
    margin-block-start: auto;
    padding-block: 24px;
    border-block-start: 1px solid var(--c-line);
    background: var(--c-surface);
    color: var(--c-muted);
  }
  .footer__inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px 24px;
    font-size: 13px;
  }
  .footer__nav { display: flex; flex-wrap: wrap; gap: 8px 16px; }
  .footer__nav a:hover { color: var(--c-brand); }

  .site { display: flex; flex-direction: column; min-block-size: 100svh; }
}

@layer utilities {
  .visually-hidden {
    position: absolute;
    inline-size: 1px;
    block-size: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
  }
  .skip-link {
    position: absolute;
    inset-block-start: -100px;
    inset-inline-start: 8px;
    z-index: 100;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    background: var(--c-brand);
    color: var(--c-on-brand);
  }
  .skip-link:focus { inset-block-start: 8px; }
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
  }
}