/* Design tokens — from design/mockups (task 029-r1). Light is default. Blue accent. */
:root,
html[data-theme="light"] {
  --color-ink: #0f172a;
  --color-text: #334155;
  --color-muted: #5b6472; /* ≥4.5:1 on white */
  --color-line: #e5e7eb;
  --color-line-soft: #eef0f3;
  --color-surface: #f5f7f8;
  --color-bg: #ffffff;
  --color-accent: #1d4ed8;
  --color-accent-hover: #1e40af;
  --color-accent-pressed: #1e40af;
  --color-accent-soft: #e8efff;
  --color-accent-soft-2: #dbe6fe;
  --color-accent-ink: #1e3a8a;
  --color-selected-bg: #eef3ff;
  --color-on-accent-muted: #c7d7fe;
  --color-dark-band: #0f172a;
  --color-mint: #7dd3fc; /* dark-band highlight */
  --color-hero-top: #f1f5ff;
  --color-fail: #b91c1c;
  --color-fail-soft: #fef2f2;

  --radius-10: 10px;
  --radius-12: 12px;
  --radius-14: 14px;
  --radius-16: 16px;
  --radius-20: 20px;
  --radius-24: 24px;
  --radius-pill: 999px;

  --shadow-chip: 0 4px 12px rgba(0, 0, 0, 0.12);
  --shadow-handle: 0 4px 14px rgba(0, 0, 0, 0.25);
  --shadow-cta: 0 8px 20px rgba(29, 78, 216, 0.28);
  --shadow-card: 0 18px 44px rgba(15, 23, 42, 0.12);
  --shadow-hero: 0 30px 70px rgba(15, 23, 42, 0.16);
  --shadow-soft: 0 12px 30px rgba(15, 23, 42, 0.08);
  --shadow-menu: 0 8px 24px rgba(15, 23, 42, 0.12);

  --font-sans: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --text-body: 16px;
  --text-h1: 58px;
  --text-h2: 40px;
  --leading-body: 1.55;
  --leading-tight: 1.08;

  --header-height: 64px;
  --page-max: 1200px;

  /* App-page aliases (editor / history / billing JS) */
  --app-bg: var(--color-bg);
  --app-surface: var(--color-surface);
  --app-text: var(--color-ink);
  --app-muted: var(--color-muted);
  --app-accent: var(--color-accent);
  --app-accent-hover: var(--color-accent-hover);
  --app-border: var(--color-line);
  --app-fail: var(--color-fail);
  --checker-a: #e3e3e3;
  --checker-b: #ffffff;
}

html[data-theme="dark"] {
  --color-ink: #f1f5f9;
  --color-text: #cbd5e1;
  --color-muted: #94a3b8;
  --color-line: #2a3542;
  --color-line-soft: #1e293b;
  --color-surface: #1a222c;
  --color-bg: #0f1419;
  /* Lighter blues for ≥4.5:1 on dark surfaces */
  --color-accent: #60a5fa;
  --color-accent-hover: #93c5fd;
  --color-accent-pressed: #93c5fd;
  --color-accent-soft: #1e3a8a;
  --color-accent-soft-2: #1e40af;
  --color-accent-ink: #bfdbfe;
  --color-selected-bg: #172554;
  --color-on-accent-muted: #1e3a8a;
  --color-dark-band: #020617;
  --color-mint: #7dd3fc;
  --color-hero-top: #0f1524;
  --color-fail: #f87171;
  --color-fail-soft: #3f1d1d;

  --shadow-chip: 0 4px 12px rgba(0, 0, 0, 0.35);
  --shadow-handle: 0 4px 14px rgba(0, 0, 0, 0.45);
  --shadow-cta: 0 8px 20px rgba(96, 165, 250, 0.22);
  --shadow-card: 0 18px 44px rgba(0, 0, 0, 0.4);
  --shadow-hero: 0 30px 70px rgba(0, 0, 0, 0.45);
  --shadow-soft: 0 12px 30px rgba(0, 0, 0, 0.3);
  --shadow-menu: 0 8px 24px rgba(0, 0, 0, 0.4);

  --app-bg: var(--color-bg);
  --app-surface: var(--color-surface);
  --app-text: var(--color-ink);
  --app-muted: var(--color-muted);
  --app-accent: var(--color-accent);
  --app-accent-hover: var(--color-accent-hover);
  --app-border: var(--color-line);
  --app-fail: var(--color-fail);
  --checker-a: #2a3542;
  --checker-b: #1a222c;
}

@media (max-width: 767.98px) {
  :root,
  html[data-theme="light"],
  html[data-theme="dark"] {
    --text-h1: 40px;
    --text-h2: 28px;
  }
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--color-ink);
  background: var(--color-bg);
}

img,
svg {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}
a:hover {
  color: var(--color-accent-hover);
}

h1,
.h1 {
  font-size: var(--text-h1);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: var(--leading-tight);
  margin: 0 0 0.5rem;
  color: var(--color-ink);
}
h2,
.h2 {
  font-size: var(--text-h2);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin: 0 0 0.5rem;
  color: var(--color-ink);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}