:root {
  --bg-0: #050814;
  --bg-1: #0a1230;
  --bg-2: #121a3a;
  --glass-bg: rgba(255, 255, 255, 0.07);
  --glass-bg-strong: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.18);
  --glass-blur: 18px;
  --text: #f4f7ff;
  --text-muted: rgba(244, 247, 255, 0.62);
  --accent: #3cf0ff;
  --accent-dim: rgba(60, 240, 255, 0.35);
  --accent-2: #5b8cff;
  --danger: #f87171;
  --font-ui: "Outfit", system-ui, sans-serif;
  --shadow: 0 10px 32px rgba(0, 0, 0, 0.4);

  /* Fluid scale — tracks viewport without hard jumps */
  --page-pad: clamp(0.4rem, 2.4vw, 0.85rem);
  --space-xs: clamp(0.22rem, 0.7vw, 0.4rem);
  --space-sm: clamp(0.35rem, 1.1vw, 0.65rem);
  --space-md: clamp(0.5rem, 1.5vw, 0.9rem);
  --space-lg: clamp(0.7rem, 2vw, 1.25rem);
  --radius: clamp(10px, 1.6vw, 14px);
  --header-h: clamp(2.7rem, 7vw, 3.35rem);
  --touch: clamp(36px, 8vw, 44px);
  --font-body: clamp(0.9rem, 0.82rem + 0.35vw, 1rem);
  --font-brand: clamp(0.92rem, 0.78rem + 0.7vw, 1.2rem);
  --font-title: clamp(1.05rem, 0.95rem + 0.55vw, 1.3rem);
  --font-cue: clamp(0.62rem, 0.55rem + 0.25vw, 0.72rem);
  --card-min: clamp(15.5rem, 42vw, 20rem);
  --card-min-compact: clamp(11.5rem, 34vw, 15rem);
  --main-max: 1280px;
  --calc-max: 40rem;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
}

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

html {
  width: 100%;
  overflow-x: clip;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg-0);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: var(--font-body);
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100dvh;
  width: 100%;
  overflow-x: clip;
  padding-bottom: var(--safe-bottom);
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
  max-width: 100%;
}

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

a {
  color: var(--accent);
}

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

#app {
  position: relative;
  z-index: 1;
  min-height: 100dvh;
  min-height: 100svh;
  width: 100%;
  max-width: 100%;
  display: flex;
  flex-direction: column;
  overflow-x: clip;
}

/* —— OLED: pure black —— */
html[data-theme="oled"] {
  --bg-0: #000000;
  --bg-1: #000000;
  --bg-2: #0a0a0a;
  --glass-bg: #0a0a0a;
  --glass-bg-strong: #111111;
  --glass-border: rgba(255, 255, 255, 0.14);
  --glass-blur: 0px;
  --text: #f2f2f2;
  --text-muted: rgba(242, 242, 242, 0.58);
  --accent: #3cf0ff;
  --accent-dim: rgba(60, 240, 255, 0.28);
  --accent-2: #5b8cff;
  --shadow: none;
}

html[data-theme="oled"] .atmosphere {
  background: #000000;
}

html[data-theme="oled"] .orb {
  display: none;
}

html[data-theme="oled"] .glass {
  background: var(--glass-bg);
  background-image: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  box-shadow: none;
  border: 1px solid var(--glass-border);
}

html[data-theme="oled"] .event-card.is-full-colour {
  background: color-mix(in srgb, var(--event-color, var(--accent)) 22%, #000);
}

/* —— Light: white / soft —— */
html[data-theme="light"] {
  --bg-0: #f4f6fb;
  --bg-1: #e9eef8;
  --bg-2: #dde6f5;
  --glass-bg: rgba(255, 255, 255, 0.86);
  --glass-bg-strong: rgba(255, 255, 255, 0.94);
  --glass-border: rgba(15, 23, 42, 0.12);
  --glass-blur: 14px;
  --text: #0f172a;
  --text-muted: rgba(15, 23, 42, 0.58);
  --accent: #0284c7;
  --accent-dim: rgba(2, 132, 199, 0.25);
  --accent-2: #2563eb;
  --danger: #dc2626;
  --shadow: 0 10px 28px rgba(15, 23, 42, 0.08);
}

html[data-theme="light"] .atmosphere {
  background:
    radial-gradient(1000px 700px at 12% -8%, rgba(56, 189, 248, 0.18), transparent 55%),
    radial-gradient(800px 600px at 92% 8%, rgba(99, 102, 241, 0.12), transparent 50%),
    linear-gradient(165deg, #f7f9fd, #eef2fa 48%, #e6ecf7 100%);
}

html[data-theme="light"] .orb {
  opacity: 0.28;
  filter: blur(70px);
}

html[data-theme="light"] .glass {
  background: var(--glass-bg);
  background-image:
    linear-gradient(var(--glass-bg), var(--glass-bg)),
    linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(226, 232, 240, 0.5) 45%, rgba(2, 132, 199, 0.12));
  box-shadow: var(--shadow);
}

html[data-theme="light"] .event-card {
  background: #ffffff;
}

html[data-theme="light"] .event-card.is-full-colour {
  background: color-mix(in srgb, var(--event-color, var(--accent)) 24%, #ffffff);
}

html[data-theme="light"] .btn {
  background: linear-gradient(135deg, rgba(2, 132, 199, 0.14), rgba(37, 99, 235, 0.1));
}

html[data-theme="light"] .btn-ghost {
  background: rgba(15, 23, 42, 0.03);
}

html[data-theme="light"] .chip,
html[data-theme="light"] .search-input,
html[data-theme="light"] .calc-input,
html[data-theme="light"] .unit-pill,
html[data-theme="light"] .filter-family,
html[data-theme="light"] .calc-endpoint,
html[data-theme="light"] .calc-offset-grid,
html[data-theme="light"] .calc-offset-cell {
  background: rgba(15, 23, 42, 0.04);
}

html[data-theme="light"] .chip-group--exclusive,
html[data-theme="light"] .calc-tool-tabs,
html[data-theme="light"] .calc-op-toggle {
  background: rgba(15, 23, 42, 0.06);
}

html[data-theme="light"] .calc-op-btn.is-active {
  color: #ffffff;
}

html[data-theme="light"] .home-escape {
  background: rgba(255, 255, 255, 0.75);
}

html[data-theme="light"] .toast {
  background: rgba(255, 255, 255, 0.96);
  color: var(--text);
}