/* ============================================
   OldWeb terminal theme ("amber phosphor")
   Load AFTER a11y.css. Pages that link this file opt into the
   themed navigation injected by navigationv2.js.

   Theme selection:
     - default follows the OS (prefers-color-scheme)
     - <html data-theme="dark|light"> overrides it (set by the nav toggle)

   Button vs. text rule: anything clickable that acts is boxed with a
   2px border and a hard offset shadow; text links are always underlined;
   plain text is never boxed or underlined.
   ============================================ */

@font-face {
  font-family: 'VT323';
  src: url('fonts/vt323-latin-400-normal.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Mono';
  src: url('fonts/ibm-plex-mono-latin-400-normal.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Mono';
  src: url('fonts/ibm-plex-mono-latin-600-normal.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

/* ---------- Tokens: light (printed manual) ---------- */
:root {
  color-scheme: light;
  --bg: #fbf6ec;
  --panel: #fffdf8;
  --head: #f3e6cc;
  --fg: #2d1f0d;
  --hi: #8f4a00;       /* accent: headings, values, button borders */
  --dim: #6a5234;      /* secondary text, 6.7:1 on --bg */
  --line: #d4bf98;     /* borders of non-interactive boxes */
  --inv: #fffdf8;      /* text on --hi fills */
  --field: #ffffff;
  --btn: #fbeed3;      /* raised button face */
  --shadow: #8f4a00;   /* hard button shadow */
  --alt: #1f6a62;      /* second accent (host bits, secondary data) */
  --err: #b3261e;
  --err-bg: #fbe4e1;
  --ok: #3f6b12;        /* success / positive values (distinct from --alt) */
  --warn: #8f4a00;      /* warnings: same as accent, pair with a text label */
  --glow: none;
  /* pixel-art mascots (inline SVG) */
  --art-hat: #8f4a00;
  --art-robe: #5b3591;
  --art-shroud: #4a3418;
  --art-skin: #e0a868;
  --art-beard: #a89a86;
  --art-eye: #2d1f0d;
  --art-staff: #8a5a24;
  --scan: repeating-linear-gradient(180deg, #fbf6ec 0 44px, #f6eddb 44px 88px);

  --font-body: 'IBM Plex Mono', Consolas, 'Liberation Mono', Menlo, monospace;
  --font-display: 'VT323', 'IBM Plex Mono', Consolas, monospace;
}

/* ---------- Tokens: dark (amber CRT) ---------- */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0e0903;
    --panel: #150e05;
    --head: #22170a;
    --fg: #f0c890;
    --hi: #ffb000;
    --dim: #b8894f;
    --line: #5a3d1c;
    --inv: #120b03;
    --field: #0a0602;
    --btn: #2a1c0b;
    --shadow: #7a5220;
    --alt: #8fd3c7;
    --err: #ff7a66;
    --err-bg: #2a0f0a;
    --ok: #b5e36b;
    --warn: #ffb000;
    --glow: 0 0 10px rgba(255, 176, 0, 0.30);
  --art-hat: #ffb000;
  --art-robe: #7b4bc4;
  --art-shroud: #5a3d1c;
  --art-skin: #f0c890;
  --art-beard: #fbeed3;
  --art-eye: #0e0903;
  --art-staff: #b8894f;
    --scan: repeating-linear-gradient(0deg, rgba(0, 0, 0, 0.22) 0 1px, transparent 1px 3px);
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0e0903;
  --panel: #150e05;
  --head: #22170a;
  --fg: #f0c890;
  --hi: #ffb000;
  --dim: #b8894f;
  --line: #5a3d1c;
  --inv: #120b03;
  --field: #0a0602;
  --btn: #2a1c0b;
  --shadow: #7a5220;
  --alt: #8fd3c7;
  --err: #ff7a66;
  --err-bg: #2a0f0a;
  --ok: #b5e36b;
  --warn: #ffb000;
  --glow: 0 0 10px rgba(255, 176, 0, 0.30);
  --art-hat: #ffb000;
  --art-robe: #7b4bc4;
  --art-shroud: #5a3d1c;
  --art-skin: #f0c890;
  --art-beard: #fbeed3;
  --art-eye: #0e0903;
  --art-staff: #b8894f;
  --scan: repeating-linear-gradient(0deg, rgba(0, 0, 0, 0.22) 0 1px, transparent 1px 3px);
}

/* ---------- Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  overflow-x: hidden;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg);
  background-image: var(--scan);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  overflow-x: hidden;
}

main {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 40px 40px;
  flex: 1 0 auto;
}

h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.05;
  color: var(--hi);
  text-shadow: var(--glow);
}
h1 { font-size: 3.6rem; }
h2 { font-size: 1.7rem; }
h3 { font-size: 1.4rem; }
h4 { font-size: 1.2rem; }

p { margin: 0; }

a {
  color: var(--fg);
  text-decoration: underline;
  text-decoration-color: var(--dim);
  text-underline-offset: 4px;
}
a:hover {
  color: var(--hi);
  text-decoration-color: var(--hi);
}

code, kbd, pre, samp {
  font-family: var(--font-body);
}

kbd {
  padding: 0 6px;
  border: 1px solid var(--line);
  color: var(--fg);
  font-size: 0.85em;
}

::selection {
  background: var(--hi);
  color: var(--inv);
}

/* ---------- Focus + skip link (overrides a11y.css colors) ---------- */
*:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
a:focus-visible,
.nav-category-btn:focus-visible,
.nav-dropdown a:focus-visible {
  outline: 3px solid var(--hi);
  outline-offset: 3px;
  box-shadow: none;
}

.skip-link {
  background: var(--hi);
  color: var(--inv);
  border-radius: 0;
  box-shadow: 4px 4px 0 var(--shadow);
  font-family: var(--font-body);
}
.skip-link:hover {
  background: var(--hi);
  color: var(--inv);
}
.skip-link:focus {
  outline-color: var(--fg);
}

main:focus::before,
[role="main"]:focus::before {
  border-color: var(--hi);
  border-radius: 0;
}

/* ---------- Page heading block ---------- */
.page-head {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 28px;
}
.page-head .lede {
  color: var(--dim);
}

/* ---------- Boxes (non-interactive panels) ---------- */
.box {
  background: var(--panel);
  border: 1px solid var(--line);
}
.box-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 8px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--head);
}
.box-head h2,
.box-head h3 {
  font-size: 1.65rem;
}
.box-body {
  padding: 18px 16px;
}
.box-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  padding: 0 3px 3px 0; /* room for button shadows */
}

/* ---------- Buttons: boxed + hard shadow ---------- */
button,
.btn,
.btn-link {
  font-family: var(--font-body);
}

.btn,
.btn-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 8px 16px;
  background: var(--btn);
  color: var(--hi);
  border: 2px solid var(--hi);
  border-radius: 0;
  box-shadow: 3px 3px 0 var(--shadow);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
  line-height: 1.2;
  cursor: pointer;
}
.btn:hover,
.btn-link:hover {
  background: var(--head);
  color: var(--hi);
}
.btn:active,
.btn-link:active {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 var(--shadow);
}

.btn.primary {
  background: var(--hi);
  color: var(--inv);
}
.btn.primary:hover {
  background: var(--hi);
  color: var(--inv);
  filter: brightness(1.08);
}

.btn.small,
.btn-link.small {
  min-height: 32px;
  padding: 3px 12px;
  font-size: 0.78rem;
  box-shadow: 2px 2px 0 var(--shadow);
}

/* Toggle-style button (selected state, e.g. presets) */
.btn[aria-pressed="true"] {
  background: var(--hi);
  color: var(--inv);
}

/* Flash after a successful copy */
.btn.copy-flash {
  background: var(--hi);
  color: var(--inv);
}

button:disabled,
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

/* Whole-card link (category index pages): the entire box is clickable,
   so it gets the button treatment: 2px accent border + hard shadow. */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
  padding: 0 4px 4px 0;
}
.card-link {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 18px 18px;
  background: var(--btn);
  border: 2px solid var(--hi);
  box-shadow: 4px 4px 0 var(--shadow);
  color: var(--fg);
  text-decoration: none;
}
.card-link:hover {
  background: var(--head);
  color: var(--fg);
}
.card-link:active {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--shadow);
}
.card-link h2,
.card-link h3 {
  font-size: 1.7rem;
}
.card-link p {
  color: var(--dim);
  font-size: 0.9rem;
}
.card-link .card-cta {
  margin-top: auto;
  color: var(--hi);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.card-link .card-cta::after {
  content: ' →';
}

/* ---------- Form fields ---------- */
label {
  color: var(--dim);
  font-size: 0.9rem;
}

input[type="text"],
input[type="number"],
input[type="search"],
input[type="email"],
input[type="url"],
input[type="password"],
input[type="date"],
input[type="time"],
input[type="month"],
input[type="week"],
input[type="datetime-local"],
input:not([type]),
select,
textarea {
  width: 100%;
  min-height: 44px;
  padding: 8px 12px;
  background: var(--field);
  color: var(--fg);
  border: 1px solid var(--line);
  border-radius: 0;
  font-family: var(--font-body);
  font-size: 1rem;
}
input:focus,
select:focus,
textarea:focus {
  border-color: var(--hi);
  color: var(--hi);
}
input::placeholder,
textarea::placeholder {
  color: var(--dim);
  opacity: 0.8;
}
/* Custom arrow: the native one renders black on the dark field on mobile */
select {
  -webkit-appearance: none;
  appearance: none;
  padding-right: 36px;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--fg) 50%),
    linear-gradient(135deg, var(--fg) 50%, transparent 50%);
  background-position: calc(100% - 20px) 50%, calc(100% - 14px) 50%;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
}
select:focus {
  background-image:
    linear-gradient(45deg, transparent 50%, var(--hi) 50%),
    linear-gradient(135deg, var(--hi) 50%, transparent 50%);
}
select option {
  background: var(--field);
  color: var(--fg);
}
input[type="range"] {
  accent-color: var(--hi);
}
input[type="checkbox"],
input[type="radio"] {
  accent-color: var(--hi);
  width: 18px;
  height: 18px;
}

/* Error states (CLAUDE.md pattern: #error / .error-container + input.error) */
input.error,
select.error,
textarea.error {
  border-color: var(--err) !important;
  background-color: var(--err-bg);
  box-shadow: none;
}
.error-alert,
.error-container {
  display: none;
  margin-top: 16px;
  padding: 10px 14px;
  background: var(--err-bg);
  border: 1px solid var(--err);
  border-left: 6px solid var(--err);
  color: var(--err);
}
.error-message {
  color: var(--err);
  background: var(--err-bg);
  border-left-color: var(--err);
  border-radius: 0;
}
[aria-required="true"]::after,
.required::after,
label:has(+ [aria-required="true"])::after,
label.required::after {
  color: var(--err);
}
.error-alert.show,
.error-container.show {
  display: block;
}
.error-alert::before,
.error-container::before {
  content: 'error: ';
  font-weight: 600;
}

/* ---------- Data tables ---------- */
.data-table {
  width: 100%;
  border-collapse: collapse;
}
.data-table th {
  padding: 8px 16px;
  text-align: left;
  font-weight: 400;
  color: var(--dim);
  border-bottom: 1px dashed var(--line);
  background: var(--panel);
  white-space: nowrap;
}
.data-table td {
  padding: 6px 16px;
  white-space: nowrap;
}
.data-table tbody tr:hover {
  background: var(--head);
}

/* Key/value list with dotted leaders */
.kv {
  width: 100%;
  border-collapse: collapse;
}
.kv td {
  padding: 4px 0;
  vertical-align: baseline;
}
.kv td:first-child {
  padding-right: 16px;
  white-space: nowrap;
  width: 1%;
}
.kv td:last-child {
  color: var(--hi);
  font-weight: 600;
  text-shadow: var(--glow);
  word-break: break-all;
}
.kv tr + tr td {
  border-top: 1px dotted var(--line);
}

/* ---------- Status bar (page footer) ---------- */
.statusbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 6px 40px;
  background: var(--hi);
  color: var(--inv);
  font-size: 0.85rem;
}
.statusbar a {
  color: var(--inv);
  text-decoration-color: var(--inv);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  main {
    padding: 20px 16px 32px;
  }
  h1 { font-size: 2.6rem; }
  .statusbar {
    padding: 6px 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}

@media print {
  /* Black on white, no scanlines or glow, whatever theme is active */
  :root,
  :root[data-theme] {
    --bg: #ffffff;
    --panel: #ffffff;
    --head: #eeeeee;
    --fg: #000000;
    --hi: #000000;
    --dim: #333333;
    --line: #999999;
    --inv: #ffffff;
    --field: #ffffff;
    --btn: #ffffff;
    --shadow: transparent;
    --alt: #000000;
    --ok: #000000;
    --warn: #000000;
    --err: #000000;
    --err-bg: #ffffff;
    --glow: none;
    --scan: none;
    --art-hat: #000000;
    --art-robe: #555555;
    --art-shroud: #555555;
    --art-skin: #cccccc;
    --art-beard: #999999;
    --art-eye: #000000;
    --art-staff: #333333;
  }
  body {
    background: #fff;
    color: #000;
  }
  .statusbar,
  .owt-topbar {
    display: none;
  }
}

/* ---------- Pixel-art mascots ----------
   Inline SVG drawn on a 1-unit grid; colors come from the --art-* tokens
   so the art follows light, dark and print like everything else. */
.pixel-art {
  display: block;
  shape-rendering: crispEdges;
}
.pixel-art .px-hat { fill: var(--art-hat); }
.pixel-art .px-robe { fill: var(--art-robe); }
.pixel-art .px-skin { fill: var(--art-skin); }
.pixel-art .px-beard { fill: var(--art-beard); }
.pixel-art .px-eye { fill: var(--art-eye); }
.pixel-art .px-staff { fill: var(--art-staff); }
.pixel-art .px-shroud { fill: var(--art-shroud); }
.pixel-art .px-curse { fill: var(--err); }
/* A mascot can link somewhere (e.g. the text adventure) */
.mascot-link {
  display: block;
  flex: none;
  line-height: 0;
  transition: transform 0.15s;
}
.mascot-link:hover,
.mascot-link:focus-visible {
  transform: translateY(-3px);
}