:root {
  --bg: #EDF1F5;
  --thermal-bg: #EDF1F5;
  --ambient-glow: rgba(1, 69, 242, 0.08);
  --ink: #0145F2;
  --muted: rgba(1, 69, 242, 0.62);
  --line: rgba(1, 69, 242, 0.2);
  --panel: rgba(237, 241, 245, 0.78);
  --accent: #0145F2;
  --melt: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--thermal-bg);
}

* {
  box-sizing: border-box;
}

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

body {
  min-height: 100svh;
  overflow-x: hidden;
  background: var(--thermal-bg);
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.app {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: max(18px, env(safe-area-inset-top)) 18px max(24px, env(safe-area-inset-bottom));
  isolation: isolate;
}

.app::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background: var(--thermal-bg);
  transition: background 260ms ease;
}

.app::after {
  content: "";
  position: fixed;
  inset: auto 0 0;
  height: 32svh;
  z-index: -1;
  background: linear-gradient(180deg, transparent, var(--ambient-glow));
  pointer-events: none;
  transition: background 260ms ease;
}

.app[data-mode="heater"] {
  --thermal-bg: #F0D5D1;
  --ambient-glow: rgba(217, 83, 58, 0.16);
}

.app[data-mode="freezer"] {
  --thermal-bg: #D2E8FA;
  --ambient-glow: rgba(1, 69, 242, 0.14);
}

.topbar {
  width: min(100%, 560px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 42px;
}

.brand {
  color: var(--ink);
  text-decoration: none;
  font-size: 16px;
  font-weight: 700;
}

.icon-button {
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: rgba(237, 241, 245, 0.64);
  backdrop-filter: blur(14px);
}

.timer-shell {
  width: 100%;
  max-width: 520px;
  min-height: calc(100svh - 96px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 18px 0 8px;
}

.ice-stage {
  position: relative;
  width: min(80vw, 390px);
  aspect-ratio: 1;
  margin: 10px 0 8px;
  border: 0;
  background: transparent;
  outline-offset: 10px;
  touch-action: manipulation;
}

.mode-controls {
  display: none;
}

.mode-buttons {
  display: flex;
  gap: 10px;
}

.mode-action {
  width: 44px;
  height: 44px;
  display: inline-grid;
  place-items: center;
  border: 1px solid rgba(1, 69, 242, 0.18);
  border-radius: 999px;
  color: rgba(1, 69, 242, 0.7);
  background: rgba(237, 241, 245, 0.72);
  backdrop-filter: blur(16px);
  transition: background 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.mode-action svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.1;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.mode-action-heater svg {
  fill: color-mix(in srgb, currentColor 12%, transparent);
}

.mode-action.active {
  transform: translateY(-1px);
}

.mode-action-heater.active {
  border-color: rgba(217, 83, 58, 0.36);
  color: #D9533A;
  background: rgba(244, 228, 224, 0.84);
}

.mode-action-freezer.active {
  border-color: rgba(1, 69, 242, 0.32);
  color: #0145F2;
  background: rgba(218, 234, 250, 0.86);
}

.freezer-warning {
  min-height: 34px;
  margin: 10px 0 0;
  padding: 8px 14px;
  border: 1px solid rgba(1, 69, 242, 0.26);
  border-radius: 999px;
  color: #0145F2;
  background: rgba(237, 241, 245, 0.86);
  box-shadow: 0 14px 30px rgba(1, 69, 242, 0.12);
  font-size: 13px;
  font-weight: 900;
  line-height: 1.25;
  opacity: 0;
  pointer-events: none;
  text-align: center;
  transform: translateY(-5px);
  transition: opacity 180ms ease, transform 180ms ease;
  white-space: nowrap;
}

.freezer-warning[data-visible="true"] {
  opacity: 1;
  transform: translateY(0);
}

.melt-scene {
  position: absolute;
  inset: 0;
  overflow: hidden;
  transform: translateY(calc(var(--melt) * 3px));
}

.melt-scene::before {
  content: "";
  position: absolute;
  left: 16%;
  right: 16%;
  bottom: 18%;
  height: 13%;
  border-radius: 50%;
  background:
    radial-gradient(ellipse at center, rgba(185, 225, 249, 0.44), rgba(185, 225, 249, 0.2) 48%, transparent 72%);
  filter: blur(1.5px);
  opacity: calc(var(--melt) * 0.72);
  transform: scaleX(calc(0.56 + var(--melt) * 0.58)) scaleY(calc(0.72 + var(--melt) * 0.2));
  transform-origin: center;
}

.melt-frame {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  user-select: none;
  -webkit-user-drag: none;
}

.melt-frame-next {
  opacity: 0;
}

.ice-stage.ripple::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 44%;
  aspect-ratio: 1;
  border: 2px solid rgba(1, 69, 242, 0.36);
  border-radius: 999px;
  animation: ripple 520ms ease-out forwards;
}

.duration-panel {
  width: min(100%, 390px);
  display: flex;
  justify-content: center;
}

.custom-time,
.primary-action,
.secondary-action {
  border: 1px solid var(--line);
  border-radius: 999px;
  min-height: 44px;
  color: var(--ink);
  background: var(--panel);
  backdrop-filter: blur(14px);
}

.custom-time {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 144px;
  padding: 0 16px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.custom-time input {
  width: 58px;
  border: 0;
  color: var(--ink);
  background: transparent;
  font-size: 18px;
  font-weight: 900;
  text-align: right;
  outline: none;
}

.actions {
  width: min(100%, 390px);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  margin-top: 12px;
}

.primary-action {
  border-color: transparent;
  color: #EDF1F5;
  background: var(--accent);
  font-weight: 900;
}

.secondary-action {
  min-width: 48px;
  padding: 0 14px;
  color: var(--muted);
  font-weight: 800;
}

.icon-action {
  display: inline-grid;
  place-items: center;
}

.icon-action svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.completion-status {
  min-height: 22px;
  margin: 10px 0 0;
  color: var(--ink);
  font-size: 14px;
  font-weight: 900;
  opacity: 0;
  text-align: center;
  transform: translateY(-4px);
  transition: opacity 220ms ease, transform 220ms ease;
}

.completion-status[data-visible="true"] {
  opacity: 1;
  transform: translateY(0);
}

.app[data-state="running"] {
  padding: 0;
}

.app[data-state="done"] {
  padding: 0 18px;
}

.app[data-state="running"] .topbar,
.app[data-state="running"] .duration-panel,
.app[data-state="running"] .actions,
.app[data-state="running"] .completion-status {
  display: none;
}

.app[data-state="running"] .mode-controls {
  position: fixed;
  top: max(18px, env(safe-area-inset-top));
  left: 50%;
  z-index: 4;
  display: flex;
  flex-direction: column;
  align-items: center;
  transform: translateX(-50%);
}

.app[data-state="running"] .timer-shell {
  min-height: 100svh;
  justify-content: center;
  padding: 0;
}

.app[data-state="running"] .ice-stage {
  width: min(86vw, 78svh, 560px);
  margin: 0;
}

.app[data-state="done"] .topbar,
.app[data-state="done"] .duration-panel,
.app[data-state="done"] .primary-action {
  display: none;
}

.app[data-state="done"] .timer-shell {
  min-height: 100svh;
  padding-top: 0;
  justify-content: center;
}

.app[data-state="done"] .ice-stage {
  width: min(82vw, 70svh, 460px);
  margin: 0 0 12px;
}

.app[data-state="done"] .actions {
  width: auto;
  display: flex;
  justify-content: center;
  margin-top: 2px;
}

.app[data-state="done"] .secondary-action {
  width: 48px;
  min-width: 48px;
  padding: 0;
}

.app[data-state="done"] .melt-scene {
  transform: translateY(3px);
}

@keyframes ripple {
  from {
    opacity: 0.8;
    transform: translate(-50%, -50%) scale(0.2);
  }
  to {
    opacity: 0;
    transform: translate(-50%, -50%) scale(1.45);
  }
}

@media (max-width: 760px) {
  .app {
    padding-inline: 14px;
  }

  .timer-shell {
    min-height: auto;
    justify-content: flex-start;
    padding-top: 5svh;
    padding-bottom: 28px;
  }

  .ice-stage {
    width: min(74vw, 304px);
    margin-top: 8px;
  }

  .duration-panel,
  .actions {
    width: min(360px, calc(100vw - 28px));
    max-width: 100%;
  }
}

@media (max-width: 420px) {
  .ice-stage {
    width: min(78vw, 304px);
  }
}

@media (min-width: 760px) {
  .timer-shell {
    padding-top: 28px;
  }
}

@media (max-height: 760px) and (min-width: 560px) {
  .timer-shell {
    min-height: auto;
    flex: 1;
    justify-content: flex-start;
    padding-top: 22px;
  }

  .ice-stage {
    width: min(58vh, 330px);
    margin: 12px 0 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}