:root {
  color-scheme: light;
  --bg-top: #fff6f8;
  --bg-mid: #fff3e8;
  --bg-bottom: #f8fbff;
  --panel: rgba(255, 251, 252, 0.78);
  --panel-strong: rgba(255, 246, 249, 0.9);
  --line: rgba(125, 73, 90, 0.14);
  --text: #4d2d3b;
  --muted: #866372;
  --accent: #df6b9b;
  --accent-strong: #b13c73;
  --petal-one: #ffc7da;
  --petal-two: #ff8eb5;
  --petal-three: #ffe6ee;
  --shadow: 0 28px 60px rgba(121, 77, 95, 0.14);
  --radius-xl: 34px;
  --radius-lg: 22px;
  --radius-md: 16px;
}

* {
  box-sizing: border-box;
}

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

body {
  overflow: hidden;
  font-family: "Aptos", "Candara", "Microsoft JhengHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.95), transparent 38%),
    radial-gradient(circle at bottom right, rgba(255, 216, 231, 0.7), transparent 32%),
    linear-gradient(155deg, var(--bg-top), var(--bg-mid) 44%, var(--bg-bottom));
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: auto;
  border-radius: 999px;
  pointer-events: none;
  filter: blur(12px);
  opacity: 0.65;
}

body::before {
  width: 22rem;
  height: 22rem;
  top: -6rem;
  right: -6rem;
  background: radial-gradient(circle, rgba(255, 204, 224, 0.72), transparent 70%);
}

body::after {
  width: 28rem;
  height: 28rem;
  left: -10rem;
  bottom: -10rem;
  background: radial-gradient(circle, rgba(210, 237, 229, 0.72), transparent 72%);
}

.page-shell {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding: max(1rem, env(safe-area-inset-top)) max(1rem, env(safe-area-inset-right)) max(1rem, env(safe-area-inset-bottom)) max(1rem, env(safe-area-inset-left));
  gap: 1rem;
}

.hero-card,
.preview-panel,
.control-panel,
.stage-panel {
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero-card {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(14rem, 0.9fr);
  gap: 1rem;
  align-items: stretch;
  padding: 1.2rem;
  border-radius: var(--radius-xl);
}

.hero-copy {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.eyebrow {
  margin: 0;
  letter-spacing: 0.26em;
  font-size: 0.72rem;
  color: var(--accent-strong);
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Baskerville Old Face", "Palatino Linotype", "Noto Serif TC", serif;
  font-weight: 600;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.6rem);
  line-height: 1;
}

.lede,
.panel-heading p,
.tips-card p,
.stage-copy span,
.install-hint {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.pill-button {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 0.95rem 1.2rem;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.pill-button:hover,
.pill-button:focus-visible {
  transform: translateY(-1px);
}

.pill-button.primary {
  color: white;
  background: linear-gradient(135deg, #ef7aa8, #dd5d84 55%, #c74e74);
  box-shadow: 0 18px 30px rgba(213, 101, 139, 0.26);
}

.pill-button.ghost {
  color: var(--accent-strong);
  background: rgba(255, 248, 250, 0.86);
  box-shadow: inset 0 0 0 1px rgba(186, 87, 124, 0.18);
}

.pill-button:disabled {
  opacity: 0.52;
  cursor: not-allowed;
  transform: none;
}

.hero-stats {
  display: grid;
  gap: 0.75rem;
}

.stat {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.25rem;
  min-height: 5.5rem;
  padding: 1rem 1.1rem;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(255, 243, 247, 0.75));
  border: 1px solid rgba(183, 115, 141, 0.12);
}

.stat-label {
  font-size: 0.82rem;
  color: var(--muted);
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(13.5rem, 16rem) minmax(16rem, 18rem);
  gap: 1rem;
  flex: 1;
  min-height: 0;
  align-items: stretch;
}

.stage-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 0;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.stage-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.12), transparent 28%),
    radial-gradient(circle at top, rgba(255, 206, 224, 0.28), transparent 48%),
    linear-gradient(145deg, rgba(255, 246, 249, 0.38), rgba(246, 252, 255, 0.08));
  pointer-events: none;
}

.stage-copy {
  position: absolute;
  top: 1rem;
  left: 1rem;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0.8rem 1rem;
  max-width: min(26rem, calc(100% - 2rem));
  border-radius: var(--radius-lg);
  background: rgba(255, 251, 253, 0.68);
  border: 1px solid rgba(180, 118, 142, 0.12);
}

.stage-copy p {
  margin: 0;
  font-weight: 700;
}

#sakuraCanvas {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 26rem;
  touch-action: none;
  cursor: crosshair;
}

.control-panel {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.15rem;
  border-radius: var(--radius-xl);
  background: var(--panel-strong);
}

.preview-panel {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.1rem;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, rgba(255, 249, 251, 0.92), rgba(246, 252, 255, 0.76));
}

.preview-heading {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.preview-heading p:last-child {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.phone-frame {
  display: flex;
  flex: 1;
  align-items: center;
  justify-content: center;
  min-height: 0;
}

.phone-shell {
  position: relative;
  width: min(100%, 15rem);
  aspect-ratio: 0.5;
  padding: 0.55rem;
  border-radius: 2.2rem;
  background:
    linear-gradient(155deg, #2e232b, #161218 72%);
  box-shadow:
    0 28px 44px rgba(39, 21, 31, 0.28),
    inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.phone-notch {
  position: absolute;
  top: 0.6rem;
  left: 50%;
  transform: translateX(-50%);
  width: 34%;
  height: 1.15rem;
  border-radius: 999px;
  background: rgba(10, 8, 13, 0.94);
  z-index: 2;
}

.phone-screen {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  border-radius: 1.75rem;
  padding: 1rem 0.9rem 0.9rem;
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.86), transparent 34%),
    linear-gradient(180deg, var(--bg-top), var(--bg-mid) 48%, var(--bg-bottom));
}

.phone-status {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.68rem;
  font-weight: 700;
  color: rgba(77, 45, 59, 0.82);
}

.phone-scene {
  position: relative;
  display: flex;
  flex: 1;
  align-items: end;
  margin-top: 0.9rem;
  border-radius: 1.45rem;
  padding: 1rem 0.9rem;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.24), transparent 28%),
    radial-gradient(circle at top, rgba(255, 255, 255, 0.45), transparent 38%),
    linear-gradient(160deg, rgba(255, 248, 250, 0.84), rgba(245, 252, 255, 0.34));
}

.phone-scene::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0), rgba(255, 230, 240, 0.18)),
    radial-gradient(circle at 78% 26%, rgba(255, 255, 255, 0.78), transparent 24%);
}

.phone-orb {
  position: absolute;
  left: 20%;
  top: 24%;
  width: 3.35rem;
  height: 3.35rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(223, 107, 155, 0.35), transparent 68%);
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 48%, white), transparent 68%);
  filter: blur(4px);
  opacity: 0.9;
}

.phone-tail {
  position: absolute;
  inset: auto auto 20% 16%;
  width: 70%;
  height: 26%;
  border-top: 0.75rem solid rgba(223, 107, 155, 0.6);
  border-top: 0.75rem solid color-mix(in srgb, var(--accent) 68%, white);
  border-radius: 999px;
  transform: rotate(-10deg);
  opacity: 0.72;
}

.phone-tail::after {
  content: "";
  position: absolute;
  right: 4%;
  top: -0.65rem;
  width: 58%;
  height: 0.46rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
}

.preview-petal {
  position: absolute;
  width: 0.95rem;
  height: 1.2rem;
  border-radius: 70% 70% 78% 78%;
  transform-origin: center;
  animation: floatPetal 6.8s ease-in-out infinite;
}

.petal-a {
  top: 22%;
  right: 22%;
  background: linear-gradient(180deg, var(--petal-one), rgba(255, 255, 255, 0.88));
}

.petal-b {
  top: 40%;
  right: 34%;
  width: 0.8rem;
  height: 1rem;
  background: linear-gradient(180deg, var(--petal-two), rgba(255, 255, 255, 0.86));
  animation-delay: -2.2s;
}

.petal-c {
  top: 16%;
  right: 44%;
  width: 0.72rem;
  height: 0.92rem;
  background: linear-gradient(180deg, var(--petal-three), rgba(255, 255, 255, 0.78));
  animation-delay: -4.1s;
}

.phone-copy {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  max-width: 80%;
}

.phone-copy strong {
  font-family: "Baskerville Old Face", "Palatino Linotype", "Noto Serif TC", serif;
  font-size: 1.22rem;
  line-height: 1.02;
}

.phone-copy span,
.phone-copy small {
  color: var(--muted);
}

.phone-copy small {
  font-size: 0.72rem;
}

.phone-mini-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.45rem;
  margin-top: 0.8rem;
}

.phone-mini-button {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 0.58rem 0.72rem;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  color: white;
  background: linear-gradient(135deg, #ef7aa8, #dd5d84 55%, #c74e74);
}

.phone-mini-button.secondary {
  color: var(--accent-strong);
  background: rgba(255, 255, 255, 0.76);
  box-shadow: inset 0 0 0 1px rgba(186, 87, 124, 0.14);
}

.panel-heading {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.control-group label,
.slider-header span,
.slider-header label {
  font-weight: 700;
}

select,
input[type="range"] {
  width: 100%;
}

select {
  appearance: none;
  border: 1px solid rgba(173, 112, 136, 0.18);
  border-radius: 14px;
  padding: 0.92rem 1rem;
  color: var(--text);
  font: inherit;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(255, 246, 248, 0.76));
}

.slider-group {
  padding: 0.9rem 1rem 1rem;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.58);
  border: 1px solid rgba(173, 112, 136, 0.12);
}

.slider-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.4rem;
}

input[type="range"] {
  accent-color: var(--accent);
}

.chip-group {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
}

.palette-chip {
  appearance: none;
  border: 1px solid rgba(176, 106, 132, 0.14);
  border-radius: 999px;
  padding: 0.8rem 0.9rem;
  font: inherit;
  font-weight: 700;
  color: var(--text);
  background: rgba(255, 255, 255, 0.88);
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.palette-chip:hover,
.palette-chip:focus-visible,
.palette-chip.active {
  transform: translateY(-1px);
  border-color: rgba(204, 86, 130, 0.3);
  background: linear-gradient(180deg, rgba(255, 244, 248, 0.98), rgba(255, 231, 240, 0.9));
}

.tips-card {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 1rem;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(150deg, rgba(255, 250, 252, 0.92), rgba(244, 252, 249, 0.86));
  border: 1px solid rgba(175, 110, 135, 0.12);
}

@media (max-width: 1024px) {
  body {
    overflow: auto;
  }

  .workspace {
    grid-template-columns: minmax(0, 1fr) clamp(6.35rem, 28vw, 7.6rem);
  }

  .workspace {
    min-height: auto;
    align-items: start;
  }

  .preview-panel {
    display: none;
  }

  .stage-panel {
    min-height: 148svh;
  }

  #sakuraCanvas {
    min-height: 148svh;
  }

  .control-panel {
    position: sticky;
    top: 0.8rem;
    gap: 0.7rem;
    padding: 0.72rem;
    border-radius: 1.45rem;
  }

  .panel-heading p,
  .tips-card {
    display: none;
  }

  .panel-heading h2 {
    font-size: 0.96rem;
    line-height: 1.1;
  }

  .control-group {
    gap: 0.35rem;
  }

  .control-group label,
  .slider-header span,
  .slider-header label {
    font-size: 0.74rem;
  }

  select {
    padding: 0.68rem 0.65rem;
    border-radius: 12px;
    font-size: 0.77rem;
  }

  .slider-group {
    padding: 0.6rem 0.65rem 0.72rem;
    border-radius: 14px;
  }

  .chip-group {
    grid-template-columns: 1fr;
    gap: 0.42rem;
  }

  .palette-chip {
    padding: 0.54rem 0.45rem;
    font-size: 0.74rem;
  }

  .hero-actions {
    gap: 0.55rem;
  }

  .pill-button {
    padding: 0.76rem 0.92rem;
    font-size: 0.9rem;
  }

  .stage-copy {
    top: 0.7rem;
    left: 0.7rem;
    padding: 0.62rem 0.78rem;
  }

  .stage-copy p {
    font-size: 0.86rem;
  }

  .stage-copy span {
    font-size: 0.73rem;
    line-height: 1.45;
  }
}

@media (min-width: 1025px) and (max-width: 1180px) {
  .workspace {
    grid-template-columns: minmax(0, 1fr) minmax(15rem, 18rem);
  }

  .preview-panel {
    display: none;
  }
}

@media (max-width: 720px) {
  .page-shell {
    padding: max(0.8rem, env(safe-area-inset-top)) max(0.8rem, env(safe-area-inset-right)) max(0.8rem, env(safe-area-inset-bottom)) max(0.8rem, env(safe-area-inset-left));
  }

  .hero-card {
    padding: 1rem;
    grid-template-columns: 1fr;
  }

  .hero-actions {
    justify-content: flex-end;
  }

  h1 {
    font-size: clamp(2rem, 10vw, 2.7rem);
  }

  .hero-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .stat {
    min-height: 4.5rem;
    padding: 0.8rem;
  }

  .stage-copy {
    top: 0.75rem;
    left: 0.75rem;
    max-width: calc(100% - 1.5rem);
  }
}

@media (max-width: 520px) {
  .workspace {
    grid-template-columns: minmax(0, 1fr) clamp(5.9rem, 27vw, 6.7rem);
    gap: 0.72rem;
  }

  .stage-panel,
  #sakuraCanvas {
    min-height: 156svh;
  }

  .control-panel {
    padding: 0.6rem;
  }

  .panel-heading h2 {
    font-size: 0.88rem;
  }

  .control-group label,
  .slider-header span,
  .slider-header label,
  select,
  .palette-chip {
    font-size: 0.7rem;
  }

  .slider-group {
    padding: 0.56rem 0.56rem 0.64rem;
  }

  .pill-button {
    padding: 0.68rem 0.82rem;
    font-size: 0.84rem;
  }

  .hero-actions {
    justify-content: flex-end;
  }
}

@keyframes floatPetal {
  0%,
  100% {
    transform: translate3d(0, 0, 0) rotate(4deg);
    opacity: 0.86;
  }

  50% {
    transform: translate3d(-0.4rem, 0.85rem, 0) rotate(-18deg);
    opacity: 1;
  }
}