gacha-event-tracker/src/client/styles.css

@import "tailwindcss";

/*
 * Two orthogonal colour systems.
 *
 *   hue  → WHICH GAME  (identity; lives in games.ts, applied inline)
 *   heat → HOW URGENT  (state; the ramp below)
 *
 * Keeping them separate is what lets one glance answer "whose event is this?"
 * and "how long have I got?" at the same time. Never colour an urgency element
 * with a game hue, or vice versa.
 */
@theme {
  /* Ground is deep blue-black, not neutral near-black — the whole surface
     should feel like a lit instrument panel rather than a void. */
  --color-ground: #12141c;
  --color-surface: #1b1e2a;
  --color-raised: #232739;
  --color-hairline: #2c3145;
  --color-ink: #e9ebf3;
  --color-muted: #888fa6;
  --color-faint: #5a6178;

  /* Heat ramp: monotonic in salience, dim → blue → amber → red. */
  --color-calm: #55607f;
  --color-near: #5b8def;
  --color-soon: #e8b33c;
  --color-critical: #ff4d6a;

  --font-display: "Chakra Petch", ui-sans-serif, system-ui, sans-serif;
  --font-body: "Public Sans", ui-sans-serif, system-ui, sans-serif;
}

:root {
  color-scheme: dark;
}

html,
body,
#root {
  height: 100%;
}

body {
  margin: 0;
  background: var(--color-ground);
  color: var(--color-ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  /* Faint vertical gradient so the page reads as a panel with a light source
     rather than a flat fill. Subtle enough not to fight the data. */
  background-image: radial-gradient(
    120% 70% at 50% -10%,
    #1a1e2c 0%,
    var(--color-ground) 60%
  );
  background-attachment: fixed;
}

/* Countdowns tick. Tabular figures keep them from reflowing every second. */
.tnum {
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

/* Eyebrow labels: the utility voice of the interface. */
.eyebrow {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-faint);
}

/* ---- Signature: the segmented depletion meter -------------------------- */
/* Discrete ticks, not a smooth bar — lifted from in-game stamina meters.
   Spent ticks recede; remaining ticks carry the urgency colour. */
.meter {
  display: flex;
  gap: 2px;
  height: 10px;
  align-items: stretch;
}
.meter-tick {
  flex: 1 1 0;
  border-radius: 1px;
  background: var(--color-hairline);
  transition: background-color 240ms ease;
}
.meter-tick[data-live="true"] {
  background: var(--tick);
  box-shadow: 0 0 6px -1px var(--tick);
}
.meter-tick[data-unknown="true"] {
  background: repeating-linear-gradient(
    90deg,
    var(--color-hairline) 0 2px,
    transparent 2px 4px
  );
  box-shadow: none;
}

@media (prefers-reduced-motion: no-preference) {
  .meter-tick {
    animation: tick-in 320ms cubic-bezier(0.2, 0.7, 0.3, 1) backwards;
  }
  @keyframes tick-in {
    from {
      opacity: 0;
      transform: scaleY(0.3);
    }
  }
}

/* ---- Event rows -------------------------------------------------------- */
/*
 * Hover should feel instant. Everything here is fast (110–160ms) and eased out,
 * so the row responds on the way in and settles on the way out — a slow
 * symmetric fade is what makes an interface feel laggy even at 60fps.
 *
 * All hover states are behind `hover: hover` so a tap on a touch device does
 * not leave a row stuck in its hover appearance.
 */
.event-row {
  --row-bg: transparent;
  background: var(--row-bg);
  transition: background-color 130ms ease-out;
}
.event-row.is-complete {
  opacity: 0.4;
}

.row-rail {
  background: var(--hue);
  opacity: 0.55;
  transform: scaleY(0.82);
  transform-origin: center;
  transition:
    transform 160ms cubic-bezier(0.2, 0.7, 0.3, 1),
    opacity 130ms ease-out,
    box-shadow 160ms ease-out;
}

.row-title,
.row-count,
.row-summary {
  transition: color 130ms ease-out;
}

.row-check {
  transition:
    border-color 130ms ease-out,
    color 130ms ease-out,
    transform 120ms cubic-bezier(0.2, 0.7, 0.3, 1);
}

@media (hover: hover) {
  .event-row:hover {
    --row-bg: color-mix(in srgb, var(--color-raised) 62%, transparent);
  }
  .event-row:hover .row-rail {
    opacity: 1;
    transform: scaleY(1);
    box-shadow: 0 0 10px -2px var(--hue);
  }
  /* The meter is the signature element, so it is the thing that visibly
     wakes up: live ticks gain a little light under the cursor. */
  .event-row:hover .meter-tick[data-live="true"] {
    filter: brightness(1.28) saturate(1.08);
  }
  .event-row:hover .row-summary {
    color: var(--color-ink);
  }
  .event-row:hover .row-check {
    border-color: var(--color-faint);
    color: var(--color-muted);
  }
  /* The chevron leans towards where the row is about to take you. It is the
     only thing left on the right of a row, so it has to carry "this opens"
     on its own. */
  .event-row:hover .row-open {
    transform: translateX(2px);
    color: var(--color-ink);
  }
  .row-check:hover {
    transform: scale(1.08);
    border-color: var(--color-muted);
    color: var(--color-ink);
  }
}

/* Press feedback lands on both mouse and touch — the tactile half of
   "responsive". */
.event-row:active {
  --row-bg: color-mix(in srgb, var(--color-raised) 82%, transparent);
  transition-duration: 40ms;
}
.row-check:active {
  transform: scale(0.9);
  transition-duration: 60ms;
}

.meter-tick {
  transition:
    background-color 240ms ease,
    filter 130ms ease-out;
}

@media (prefers-reduced-motion: reduce) {
  .event-row,
  .row-rail,
  .row-title,
  .row-count,
  .row-summary,
  .row-check,
  .meter-tick {
    transition: none;
  }
  .row-check:hover,
  .row-check:active,
  .event-row:hover .row-open,
  .event-row:hover .row-rail {
    transform: none;
  }
}

/* Focus ring: visible, and never removed. */
:where(a, button, [tabindex]):focus-visible {
  outline: 2px solid var(--color-near);
  outline-offset: 2px;
  border-radius: 3px;
}

/* Horizontal scrollers keep their gutter but hide the bar chrome. */
.scroll-x {
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--color-hairline) transparent;
}