/* ============ tokens ============ */
:root {
  /* dark by default — sensible for a personal launcher used mostly on phone */
  --bg-0: #0a0e1a;
  --bg-1: #101627;
  --bg-2: #172038;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text-1: #f4f6fb;
  --text-2: #b0b8cc;
  --text-3: #6b7590;
  --accent: #7ab8ff;
  --accent-glow: rgba(122, 184, 255, 0.28);

  --radius-sm: 10px;
  --radius: 18px;
  --radius-lg: 24px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;

  --font-body: "Inter", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: "Instrument Serif", Georgia, serif;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="light"] {
  --bg-0: #fafaf7;
  --bg-1: #ffffff;
  --bg-2: #f0f0ea;
  --border: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.14);
  --text-1: #12141c;
  --text-2: #4a5164;
  --text-3: #8b93a8;
  --accent: #2263c4;
  --accent-glow: rgba(34, 99, 196, 0.18);
}

/* ============ reset ============ */
* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  min-height: 100vh;
  min-height: 100dvh;
}

body {
  font-family: var(--font-body);
  background: var(--bg-0);
  color: var(--text-1);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }

/* ============ ambient background ============ */
.ambient {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 20% 0%, var(--accent-glow), transparent 45%),
    radial-gradient(circle at 85% 100%, rgba(180, 122, 255, 0.15), transparent 50%);
  opacity: 0.9;
}

[data-theme="light"] .ambient {
  opacity: 0.6;
}

/* ============ shell ============ */
.shell {
  position: relative;
  z-index: 1;
  max-width: 960px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-5) var(--space-7);
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* ============ header ============ */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-7);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.brand-mark {
  width: 40px;
  height: 40px;
  color: var(--accent);
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-title {
  font-family: var(--font-display);
  font-size: 28px;
  line-height: 1;
  color: var(--text-1);
  letter-spacing: -0.01em;
}

.brand-sub {
  font-size: 13px;
  color: var(--text-3);
  letter-spacing: 0.02em;
}

.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  color: var(--text-2);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.theme-toggle:hover, .theme-toggle:focus-visible {
  color: var(--text-1);
  border-color: var(--border-strong);
  background: var(--bg-1);
  outline: none;
}

.theme-toggle:active { transform: scale(0.96); }

/* ============ grid ============ */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-4);
  flex: 1;
  align-content: start;
}

@media (max-width: 480px) {
  .grid {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }
}

/* ============ tile ============ */
.tile {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5);
  min-height: 148px;
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: inherit;
  text-decoration: none;
  transition: transform 0.35s var(--ease-out), border-color 0.25s var(--ease), background 0.25s var(--ease);
  overflow: hidden;
  isolation: isolate;
}

.tile::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--tile-glow-x, 50%) var(--tile-glow-y, 0%), var(--accent-glow), transparent 60%);
  opacity: 0;
  transition: opacity 0.35s var(--ease);
  pointer-events: none;
  z-index: -1;
}

.tile:hover, .tile:focus-visible {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  outline: none;
}

.tile:hover::before, .tile:focus-visible::before {
  opacity: 1;
}

.tile:active { transform: translateY(0); }

.tile.pending {
  opacity: 0.55;
  cursor: default;
  pointer-events: none;
}

.tile-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--bg-2);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.tile-icon svg {
  width: 22px;
  height: 22px;
}

.tile-body {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: auto;
}

.tile-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-1);
  letter-spacing: -0.005em;
}

.tile-desc {
  font-size: 13px;
  color: var(--text-3);
  line-height: 1.45;
}

.tile-badge {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  font-size: 10px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-3);
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-2);
}

/* ============ footer ============ */
.footer {
  margin-top: var(--space-7);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: center;
}

.footer-text {
  font-size: 12px;
  color: var(--text-3);
  letter-spacing: 0.04em;
}

/* ============ motion preferences ============ */
@media (prefers-reduced-motion: reduce) {
  * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}