:root {
  --bg: #5c4a36;
  --fg: #f5f7f0;
  --muted: rgba(245, 247, 240, 0.5);
}

.is-hidden {
  display: none !important;
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  margin: 0;
  height: 100%;
}

body {
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  overflow: hidden;
  overscroll-behavior: none;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
}

/* Soft, breathing gradient orb */

.orb {
  position: fixed;
  top: 50%;
  left: 50%;
  width: 130vmax;
  height: 130vmax;
  border-radius: 50%;
  transform: translate(-50%, -50%) scale(0.5);
  background: radial-gradient(
    circle at 38% 35%,
    #eef4e2 0%,
    #c3dba4 28%,
    #87a86c 55%,
    #36482a 80%,
    var(--bg) 100%
  );
  filter: blur(80px);
  opacity: 0.45;
  transition: transform 4s ease-in-out, opacity 4s ease-in-out;
  will-change: transform, opacity;
  pointer-events: none;
}

.orb.orb--expanded {
  transform: translate(-50%, -50%) scale(0.95);
  opacity: 0.85;
}

/* Subtle film grain overlay */

.grain {
  position: fixed;
  inset: 0;
  opacity: 0.18;
  mix-blend-mode: overlay;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
}

/* Layout */

.app {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  min-height: 100dvh;
  text-align: center;
}

.top-stepper {
  position: absolute;
  top: calc(1.75rem + env(safe-area-inset-top));
  left: 50%;
  transform: translateX(-50%);
}

.bottom-cluster {
  position: absolute;
  bottom: calc(1.75rem + env(safe-area-inset-bottom));
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.reset-corner {
  position: absolute;
  bottom: calc(1.75rem + env(safe-area-inset-bottom));
  left: calc(1.5rem + env(safe-area-inset-left));
}

/* Duration stepper */

.stepper-group {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stepper-label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.65rem;
}

.duration {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.duration-btn {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: var(--fg);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease, transform 0.1s ease;
  font-family: inherit;
}

.duration-btn:active {
  background: rgba(255, 255, 255, 0.12);
  transform: scale(0.94);
}

.duration-value {
  min-width: 3.25rem;
  text-align: center;
  font-size: 1.05rem;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

.duration-unit {
  opacity: 0.5;
  margin-left: 0.15rem;
  font-size: 0.85em;
}

/* Phase display */

.phase {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.phase-label {
  font-size: clamp(1.1rem, 4.5vw, 1.6rem);
  font-weight: 400;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--muted);
}

.phase-count {
  font-size: clamp(3rem, 15vw, 6rem);
  font-weight: 200;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.phase-subtitle {
  max-width: 24rem;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.55;
  color: var(--muted);
  margin: 0;
}

.phase-label--finished {
  font-size: clamp(1.8rem, 7vw, 2.6rem);
  font-weight: 500;
  letter-spacing: 0;
  text-transform: none;
  color: var(--fg);
}

/* Icons - inline SVG so they render as crisp glyphs everywhere instead of
   being substituted with color emoji (which iOS does for characters like
   the play/pause/reset symbols). */

.icon {
  display: block;
  width: 1.5rem;
  height: 1.5rem;
  fill: currentColor;
  flex: none;
}

.cta-btn .icon {
  width: 1.05em;
  height: 1.05em;
}

.icon-btn .icon {
  width: 1.4rem;
  height: 1.4rem;
}

.icon-btn--primary .icon {
  width: 1.7rem;
  height: 1.7rem;
}

/* Controls */

.controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
}

.icon-btn {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  color: var(--fg);
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.1s ease, background 0.15s ease;
}

.icon-btn:active {
  transform: scale(0.94);
}

.icon-btn--primary {
  width: 4.5rem;
  height: 4.5rem;
  background: var(--fg);
  color: var(--bg);
  border-color: var(--fg);
  font-size: 1.4rem;
}

.cta-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 1.05rem 2.2rem;
  border-radius: 999px;
  border: 1px solid var(--fg);
  background: var(--fg);
  color: var(--bg);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  font-family: inherit;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.1s ease, opacity 0.15s ease;
}

.cta-btn:active {
  transform: scale(0.97);
}

.install-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.65rem;
}

.install-hint {
  max-width: 20rem;
  font-size: 0.9rem;
  line-height: 1.5;
  letter-spacing: 0.01em;
  color: var(--muted);
  margin: 0;
}