:root {
  color-scheme: dark;
  --bg-1: #1a0f0b;
  --bg-2: #2f1612;
  --panel: rgba(15, 18, 24, 0.74);
  --panel-edge: rgba(255, 255, 255, 0.08);
  --text: #fff7ed;
  --muted: #f8d6be;
  --accent: #f97316;
  --accent-strong: #fb923c;
  --accent-soft: rgba(249, 115, 22, 0.2);
  --danger: #ef4444;
  --shadow: 0 28px 60px rgba(0, 0, 0, 0.4);
  --ring-track: rgba(255, 255, 255, 0.08);
  --ring-glow: rgba(249, 115, 22, 0.35);
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  font-family: "Avenir Next", "DIN Alternate", "Trebuchet MS", sans-serif;
}

* {
  box-sizing: border-box;
}

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

body {
  background:
    radial-gradient(circle at top left, rgba(251, 146, 60, 0.22), transparent 32%),
    radial-gradient(circle at top right, rgba(239, 68, 68, 0.18), transparent 24%),
    linear-gradient(160deg, var(--bg-1), var(--bg-2));
  color: var(--text);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 22px 22px;
  mask-image: radial-gradient(circle at center, black 48%, transparent 92%);
  opacity: 0.7;
}

.app-shell {
  width: min(100%, 34rem);
  margin: 0 auto;
  padding: calc(1.4rem + var(--safe-top)) 1rem calc(1.4rem + var(--safe-bottom));
  display: grid;
  gap: 1rem;
}

.hero-card,
.timer-card,
.preset-card,
.settings-card,
.note-card,
.install-sheet-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--panel-edge);
  border-radius: 1.75rem;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), transparent 44%),
    var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
}

.hero-card,
.preset-card,
.settings-card,
.note-card {
  padding: 1.25rem;
}

.hero-card::after,
.timer-card::after,
.preset-card::after,
.settings-card::after {
  content: "";
  position: absolute;
  inset: auto -12% -40% auto;
  width: 11rem;
  height: 11rem;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(249, 115, 22, 0.25), transparent 70%);
  pointer-events: none;
}

.hero-card {
  display: grid;
  gap: 1rem;
}

.hero-copy h1,
.section-heading h2 {
  margin: 0;
  line-height: 0.96;
  letter-spacing: -0.04em;
}

.hero-copy h1 {
  font-size: clamp(2.2rem, 7vw, 3.6rem);
  max-width: 10ch;
}

.hero-copy p,
.section-heading p,
.timer-label,
.timer-meta,
.toggle small,
.note-card p:last-child {
  color: var(--muted);
}

.eyebrow {
  margin: 0 0 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
  font-weight: 700;
}

.subcopy {
  max-width: 28ch;
  margin: 0.75rem 0 0;
  line-height: 1.4;
}

.install-chip {
  justify-self: start;
  border: 0;
  border-radius: 999px;
  padding: 0.8rem 1rem;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  font: inherit;
}

.timer-card {
  padding: 1.35rem 1rem 1rem;
  display: grid;
  gap: 1rem;
}

.timer-ring {
  width: min(100%, 21rem);
  aspect-ratio: 1;
  margin: 0 auto;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background:
    conic-gradient(
      from 180deg,
      var(--accent) calc(var(--progress) * 1turn),
      var(--ring-track) 0
    );
  box-shadow:
    0 0 0 0.55rem rgba(255, 255, 255, 0.03),
    0 0 3rem var(--ring-glow);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.timer-core {
  width: calc(100% - 1.35rem);
  aspect-ratio: 1;
  border-radius: 50%;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 0.35rem;
  padding: 1rem;
  text-align: center;
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.06), transparent 46%),
    #120f12;
}

.timer-readout {
  margin: 0;
  font-size: clamp(3.5rem, 14vw, 5rem);
  font-weight: 800;
  letter-spacing: -0.06em;
  line-height: 1;
}

.timer-label,
.timer-meta {
  margin: 0;
}

.control-row {
  display: grid;
  gap: 0.75rem;
}

.primary-actions {
  grid-template-columns: 1.5fr 1fr;
}

.utility-actions {
  grid-template-columns: repeat(3, 1fr);
}

button,
input {
  -webkit-tap-highlight-color: transparent;
}

button {
  min-height: 3.4rem;
  border: 0;
  border-radius: 1rem;
  color: var(--text);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition:
    transform 120ms ease,
    background 120ms ease,
    opacity 120ms ease;
}

button:active {
  transform: translateY(1px) scale(0.995);
}

button:disabled {
  opacity: 0.5;
  cursor: default;
}

.primary-button {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: 0 12px 28px rgba(249, 115, 22, 0.3);
}

.ghost-button,
.mini-button,
.preset-button {
  background: rgba(255, 255, 255, 0.07);
}

.danger {
  background: rgba(239, 68, 68, 0.18);
}

.section-heading {
  margin-bottom: 1rem;
}

.preset-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.preset-button.active {
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.9), rgba(251, 146, 60, 0.9));
  color: #120f12;
}

.custom-time-form {
  margin-top: 1rem;
  display: grid;
  gap: 0.6rem;
}

.custom-time-form label {
  font-size: 0.95rem;
  color: var(--muted);
}

.custom-time-inputs {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.75rem;
}

.custom-time-inputs input {
  width: 100%;
  min-height: 3.4rem;
  border-radius: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(0, 0, 0, 0.18);
  color: var(--text);
  padding: 0 1rem;
  font: inherit;
}

.settings-card {
  display: grid;
  gap: 0.75rem;
}

.toggle {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.85rem;
  align-items: start;
  padding: 0.95rem 1rem;
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.05);
}

.toggle input {
  margin-top: 0.25rem;
  width: 1.2rem;
  height: 1.2rem;
  accent-color: var(--accent);
}

.toggle strong,
.toggle small {
  display: block;
}

.toggle small {
  margin-top: 0.2rem;
  line-height: 1.35;
}

.note-card {
  border-color: rgba(249, 115, 22, 0.25);
}

.install-sheet {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: end center;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.45);
  z-index: 50;
}

.install-sheet-card {
  width: min(100%, 34rem);
  padding: 1.2rem;
}

.hidden {
  display: none;
}

body.alarm-active .timer-ring {
  animation: pulse-ring 850ms ease-in-out infinite;
  box-shadow:
    0 0 0 0.6rem rgba(255, 255, 255, 0.03),
    0 0 4rem rgba(239, 68, 68, 0.45);
}

body.alarm-active .timer-core {
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.1), transparent 46%),
    linear-gradient(180deg, rgba(239, 68, 68, 0.14), #120f12);
}

@keyframes pulse-ring {
  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.015);
  }
}

@media (min-width: 720px) {
  .app-shell {
    width: min(100% - 2rem, 62rem);
    grid-template-columns: 1.05fr 0.95fr;
    align-items: start;
  }

  .hero-card,
  .timer-card {
    grid-column: 1;
  }

  .preset-card,
  .settings-card,
  .note-card {
    grid-column: 2;
  }
}