/* ═══════════════════════════════════════════════════════
   Orbital Bloom — Stylesheet
   ═══════════════════════════════════════════════════════ */

/* ── Reset & tokens ───────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg:   #060a1c;
  --text: rgba(255, 255, 255, .86);
  --dim:  rgba(255, 255, 255, .32);
  --ui:   rgba(255, 255, 255, .08);
}

/* ── Base ─────────────────────────────────────────────── */
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, sans-serif;
  overflow: hidden;
  width: 100vw;
  height: 100vh;
}

/* ── Canvas ───────────────────────────────────────────── */
#c {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  cursor: crosshair;
  touch-action: none;
}

/* ── Controls ─────────────────────────────────────────── */
#btn-pause {
  position: absolute;
  top: 1.2rem;
  right: 2rem;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.3rem;
  height: 2.3rem;
  background: var(--ui);
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 50%;
  color: var(--dim);
  font-size: .85rem;
  cursor: pointer;
  transition: color .2s, border-color .2s;
}
#btn-pause:hover {
  color: var(--text);
  border-color: rgba(255, 255, 255, .3);
}

#btn-back {
  position: absolute;
  bottom: 1.3rem;
  left: 2rem;
  z-index: 20;
  font-size: .56rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--dim);
  text-decoration: none;
  transition: color .2s;
}
#btn-back:hover { color: var(--text); }

/* ── Hint ─────────────────────────────────────────────── */
#hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  font-size: .6rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--dim);
  white-space: nowrap;
  pointer-events: none;
  transition: opacity 1.2s;
}
#hint.hidden { opacity: 0; }

/* ── Size indicator ───────────────────────────────────── */
#size-ind {
  position: absolute;
  bottom: 4.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  align-items: center;
  gap: .7rem;
  pointer-events: none;
  transition: opacity .3s;
}
#size-ind.hidden { opacity: 0; }

#size-lbl {
  font-size: .55rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--dim);
}

#size-wrap {
  width: 120px;
  height: 3px;
  background: rgba(255, 255, 255, .08);
  border-radius: 2px;
  overflow: hidden;
}

#size-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #3b6bff, #c5a1ff);
  border-radius: 2px;
  transition: width .1s;
}

/* ── Overlays ─────────────────────────────────────────── */
.ov {
  position: absolute;
  inset: 0;
  z-index: 30;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: rgba(6, 10, 28, .90);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: opacity .4s;
}
.ov.hidden {
  opacity: 0;
  pointer-events: none;
}

.ov-title {
  font-size: clamp(1.8rem, 5vw, 3.2rem);
  font-weight: 200;
  letter-spacing: .15em;
  text-transform: uppercase;
  margin-bottom: .35rem;
}

.ov-sub {
  font-size: .74rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 1.6rem;
}

/* ── Buttons ──────────────────────────────────────────── */
.btn-pill {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, .35);
  border-radius: 100px;
  color: var(--text);
  font-size: .72rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  padding: .7rem 2.4rem;
  margin-bottom: .5rem;
  cursor: pointer;
  transition: background .25s, border-color .25s;
}
.btn-pill:hover {
  background: rgba(255, 255, 255, .08);
  border-color: rgba(255, 255, 255, .6);
}

.btn-ghost {
  background: transparent;
  border: none;
  color: var(--dim);
  font-size: .66rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  padding: .4rem 1rem;
  cursor: pointer;
  transition: color .2s;
}
.btn-ghost:hover { color: var(--text); }