/* james.css: starting point for James's apps. Bold, big, full contrast, square, no decoration.
   Rules baked in: text >= 16px, AAA contrast, no dimmed text, no hairline rules, no rounded corners,
   no horizontal scroll, roomy inputs, loud failures. Override tokens, not components. */

:root {
  /* colour tokens (light) */
  --bg: #FFFFFF;
  --fg: #0E1520;
  --panel: #EDF1F6;
  --panel-strong: #DCE6F2;
  --accent: #0A4E8C;
  --on-accent: #FFFFFF;
  --good: #0B5D2A;
  --warn: #6B4200;
  --bad: #961010;
  --field: #FFFFFF;
  --edge: #0E1520;
  /* type */
  --font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --text: 1.125rem;      /* 18px body; never go below 0.875rem anywhere */
  --small: 0.9375rem;
  --h1: clamp(2rem, 7vw, 2.75rem);
  --h2: clamp(1.5rem, 5vw, 1.9rem);
  --h3: 1.25rem;
  /* space */
  --gap: 16px;
  --gap-lg: 32px;
  --tap: 48px;           /* minimum control height */
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0E1520; --fg: #F4F7FA; --panel: #18232F; --panel-strong: #243548;
    --accent: #9CCBFF; --on-accent: #0E1520; --good: #7EE0A0; --warn: #FFD27A; --bad: #FF9C9C;
    --field: #0A1018; --edge: #F4F7FA; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0E1520; --fg: #F4F7FA; --panel: #18232F; --panel-strong: #243548;
  --accent: #9CCBFF; --on-accent: #0E1520; --good: #7EE0A0; --warn: #FFD27A; --bad: #FF9C9C;
  --field: #0A1018; --edge: #F4F7FA; color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; border-radius: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: var(--text)/1.6 var(--font);
  padding-block: var(--gap-lg);
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
  overflow-x: hidden;
}
img, video, canvas, svg { max-width: 100%; height: auto; }

/* layout */
.wrap { max-width: 60rem; margin: 0 auto; display: flex; flex-direction: column; gap: var(--gap-lg); min-width: 0; }
.stack { display: flex; flex-direction: column; gap: var(--gap); min-width: 0; }
.row { display: flex; flex-wrap: wrap; gap: var(--gap); align-items: center; }
.grid { display: grid; gap: var(--gap); grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr)); }
.grid > *, .row > * { min-width: 0; }
.scroll-x { overflow-x: auto; }     /* only for wide tables and code */

/* type: hierarchy from size and weight at full contrast, never from dimming */
h1, h2, h3 { margin: 0; line-height: 1.2; text-wrap: balance; font-weight: 800; font-family: var(--font-head, var(--font)); }
h1 { font-size: var(--h1); } h2 { font-size: var(--h2); } h3 { font-size: var(--h3); }
p { margin: 0; max-width: 42rem; }
a { color: var(--accent); text-underline-offset: 3px; font-weight: 600; }
code, pre, kbd { font-family: var(--mono); font-size: var(--small); }
code { background: var(--panel); padding: 2px 6px; }
pre { background: var(--panel); padding: var(--gap); overflow-x: auto; margin: 0; }
.label { font-size: var(--small); font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.small { font-size: var(--small); }
.num { font-variant-numeric: tabular-nums; }

/* surfaces: separation by background shift and space, no rules or shadows */
.panel { background: var(--panel); padding: 20px; display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.panel.strong { background: var(--panel-strong); }

/* controls */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--accent); outline-offset: 2px;
}
button, .btn {
  min-height: var(--tap); padding: 10px 22px; font: 700 var(--text)/1.2 var(--font);
  background: var(--accent); color: var(--on-accent); border: 2px solid var(--accent); cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; text-decoration: none;
}
button:hover, .btn:hover { background: var(--fg); border-color: var(--fg); color: var(--bg); }
button.secondary, .btn.secondary { background: transparent; color: var(--fg); border-color: var(--fg); }
button.secondary:hover, .btn.secondary:hover { background: var(--fg); color: var(--bg); }
button.danger, .btn.danger { background: var(--bad); border-color: var(--bad); color: var(--bg); }
button:disabled { opacity: 1; background: var(--panel-strong); border-color: var(--panel-strong); color: var(--fg); cursor: not-allowed; text-decoration: line-through; }
label { font-weight: 700; display: block; margin-bottom: 6px; }
input, select, textarea {
  width: 100%; min-height: var(--tap); padding: 10px 14px; font: var(--text)/1.4 var(--font);
  background: var(--field); color: var(--fg); border: 2px solid var(--edge);
}
/* Safari ignores min-height/padding on native selects, so draw them like the inputs */
select {
  appearance: none; -webkit-appearance: none; height: var(--tap); padding-right: 44px;
  background-image: linear-gradient(45deg, transparent 50%, var(--fg) 50%), linear-gradient(135deg, var(--fg) 50%, transparent 50%);
  background-position: calc(100% - 22px) 50%, calc(100% - 16px) 50%; background-size: 6px 6px, 6px 6px; background-repeat: no-repeat;
}
textarea { min-height: 8rem; resize: vertical; }
/* progress bar: square, bordered, accent fill */
progress { appearance: none; -webkit-appearance: none; width: 100%; height: 28px; border: 2px solid var(--edge); background: var(--field); }
progress::-webkit-progress-bar { background: var(--field); }
progress::-webkit-progress-value { background: var(--accent); }
progress::-moz-progress-bar { background: var(--accent); }
/* a count or tag that must not look like a stray bit of text */
.badge-box { display: inline-flex; align-items: center; min-height: var(--tap); padding: 0 16px; background: var(--panel-strong); border: 2px solid var(--edge); font-weight: 700; }
input::placeholder, textarea::placeholder { color: var(--fg); opacity: .75; }
input[type="checkbox"], input[type="radio"] { width: 24px; min-height: 24px; accent-color: var(--accent); }
.field { display: flex; flex-direction: column; }
.hint { font-size: var(--small); }

/* status: loud, never colour alone (always carries a word or symbol) */
.status { padding: 12px 16px; font-weight: 700; border-left: 8px solid currentColor; background: var(--panel); }
.status.good { color: var(--good); } .status.warn { color: var(--warn); } .status.bad { color: var(--bad); }
.status.bad::before { content: "Error: "; } .status.warn::before { content: "Warning: "; } .status.good::before { content: "OK: "; }

/* tables: full-contrast header on a filled band, row separation by banding */
table { border-collapse: collapse; width: 100%; font-variant-numeric: tabular-nums; }
th { text-align: left; background: var(--fg); color: var(--bg); padding: 12px; }
td { padding: 12px; }
tbody tr:nth-child(even) { background: var(--panel); }
[hidden] { display: none !important; } /* component display rules must not defeat the hidden attribute */