@font-face {
  font-family: "PingFang QingChun Cloud";
  src: url("./assets/fonts/PingFangQingChun.ttf") format("truetype");
  font-display: swap;
}

@font-face {
  font-family: "Laura Cursive Cloud";
  src: url("./assets/fonts/LauraCursive.otf") format("opentype");
  font-display: swap;
}

:root {
  color-scheme: dark;
  --ink: #f8fbff;
  --muted: rgba(248, 251, 255, 0.68);
  --panel: rgba(13, 27, 48, 0.36);
  --line: rgba(255, 255, 255, 0.22);
  --button: rgba(255, 255, 255, 0.92);
  --button-ink: #18334d;
}

* {
  box-sizing: border-box;
}

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

body {
  overflow: hidden;
  background: linear-gradient(180deg, var(--sky-top, #3a78c2) 0%, var(--sky-mid, #8db4df) 47%, var(--sky-bottom, #e5f2ff) 100%);
  font-family: ui-monospace, "SFMono-Regular", "Menlo", monospace;
}

#stage {
  position: fixed;
  inset: 0;
  z-index: 2;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: crosshair;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

body.front-page canvas {
  cursor: default;
  transition:
    opacity 980ms cubic-bezier(0.22, 0.72, 0.18, 1),
    filter 980ms cubic-bezier(0.22, 0.72, 0.18, 1);
}

body.front-page.draw-enabled canvas {
  cursor: crosshair;
}

.scene-hidden-input {
  position: fixed;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.portfolio-frame {
  position: fixed;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  background: #f5f5f7;
  border: 0;
  opacity: 0;
  filter: blur(14px);
  transform: translateY(18px) scale(0.986);
  transform-origin: 50% 58%;
  pointer-events: none;
  transition:
    opacity 980ms cubic-bezier(0.22, 0.72, 0.18, 1) 360ms,
    filter 980ms cubic-bezier(0.22, 0.72, 0.18, 1) 360ms,
    transform 1150ms cubic-bezier(0.16, 0.84, 0.18, 1) 360ms;
}

body.front-page.portfolio-transitioning #stage,
body.front-page.portfolio-revealed #stage {
  pointer-events: none;
}

body.front-page.portfolio-transitioning canvas,
body.front-page.portfolio-revealed canvas {
  opacity: 0;
  filter: blur(12px);
  transition-delay: 640ms;
}

body.front-page.portfolio-transitioning .portfolio-frame,
body.front-page.portfolio-revealed .portfolio-frame {
  opacity: 1;
  filter: blur(0);
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

body.front-page.portfolio-returning #stage {
  pointer-events: none;
}

body.front-page.portfolio-returning canvas {
  transition-delay: 120ms;
}

body.front-page.portfolio-returning .portfolio-frame {
  pointer-events: none;
  transition:
    opacity 860ms cubic-bezier(0.22, 0.72, 0.18, 1),
    filter 860ms cubic-bezier(0.22, 0.72, 0.18, 1),
    transform 980ms cubic-bezier(0.16, 0.84, 0.18, 1);
}

.toolbar {
  position: fixed;
  top: max(16px, env(safe-area-inset-top));
  left: 50%;
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: min(1180px, calc(100vw - 32px));
  padding: 8px;
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 999px;
  transform: translateX(-50%);
  backdrop-filter: blur(18px) saturate(1.18);
  -webkit-backdrop-filter: blur(18px) saturate(1.18);
  box-shadow: 0 18px 60px rgba(21, 52, 86, 0.2);
}

.text-control,
.toggle-control {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(8, 19, 34, 0.22);
  white-space: nowrap;
}

.toolbar span {
  color: var(--muted);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.text-control input {
  width: 150px;
  border: 0;
  outline: 0;
  color: var(--ink);
  background: transparent;
  font: 800 15px/1 ui-monospace, "SFMono-Regular", "Menlo", monospace;
  letter-spacing: 0.08em;
}

.toggle-control input {
  width: 16px;
  height: 16px;
  accent-color: #ffffff;
}

button {
  min-height: 34px;
  border: 0;
  border-radius: 999px;
  padding: 0 16px;
  color: var(--button-ink);
  background: var(--button);
  font: 900 10px/1 ui-monospace, "SFMono-Regular", "Menlo", monospace;
  letter-spacing: 0.14em;
  cursor: pointer;
}

.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  border-radius: 999px;
  padding: 0 16px;
  color: var(--button-ink);
  background: var(--button);
  font: 900 10px/1 ui-monospace, "SFMono-Regular", "Menlo", monospace;
  letter-spacing: 0.14em;
  text-decoration: none;
}

.controls-panel {
  position: fixed;
  top: max(76px, calc(env(safe-area-inset-top) + 76px));
  right: max(16px, env(safe-area-inset-right));
  bottom: max(16px, env(safe-area-inset-bottom));
  z-index: 5;
  width: min(340px, calc(100vw - 32px));
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  color: var(--ink);
  background: rgba(8, 18, 34, 0.62);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 18px;
  backdrop-filter: blur(20px) saturate(1.18);
  -webkit-backdrop-filter: blur(20px) saturate(1.18);
  box-shadow: 0 24px 90px rgba(6, 24, 54, 0.35);
  transform: translateX(0);
  transition: transform 180ms ease, opacity 180ms ease;
}

body.panel-collapsed .controls-panel {
  opacity: 0;
  pointer-events: none;
  transform: translateX(calc(100% + 24px));
}

.controls-panel header,
.controls-panel footer {
  flex: 0 0 auto;
  padding: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.controls-panel footer {
  display: grid;
  gap: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  border-bottom: 0;
}

.controls-panel header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.controls-panel strong {
  display: block;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.controls-panel header span {
  display: block;
  margin-top: 3px;
  color: rgba(255, 255, 255, 0.58);
  font-size: 10px;
  letter-spacing: 0.08em;
}

#collapse-button {
  width: 32px;
  min-height: 32px;
  padding: 0;
}

.controls-panel details {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.controls-panel details:last-of-type {
  border-bottom: 0;
}

.controls-panel summary {
  list-style: none;
  padding: 12px 14px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
}

.controls-panel summary::-webkit-details-marker {
  display: none;
}

.controls-panel details:not([open]) summary {
  color: rgba(255, 255, 255, 0.58);
}

.controls-panel label {
  display: grid;
  grid-template-columns: minmax(92px, 0.82fr) 1.18fr;
  align-items: center;
  gap: 10px;
  padding: 7px 14px;
}

.controls-panel .mode-handwriting {
  display: none;
}

body.handwriting-mode .controls-panel .mode-fill {
  display: none;
}

body.handwriting-mode .controls-panel .mode-handwriting {
  display: grid;
}

.controls-panel label:last-child {
  padding-bottom: 14px;
}

.controls-panel label span {
  color: rgba(255, 255, 255, 0.66);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.controls-panel input[type="range"] {
  width: 100%;
  accent-color: #fff;
}

.controls-panel input[type="checkbox"] {
  width: 18px;
  height: 18px;
  justify-self: start;
  accent-color: #fff;
}

.controls-panel input[type="color"] {
  width: 100%;
  height: 28px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  padding: 2px;
  background: rgba(255, 255, 255, 0.12);
}

.controls-panel input[type="text"],
.controls-panel input[type="number"] {
  min-width: 0;
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  padding: 7px 10px;
  color: var(--ink);
  outline: 0;
  background: rgba(0, 0, 0, 0.24);
  font: 800 11px/1 ui-monospace, "SFMono-Regular", "Menlo", monospace;
}

.controls-panel input[type="text"]:focus,
.controls-panel input[type="number"]:focus,
.controls-panel select:focus {
  border-color: rgba(255, 255, 255, 0.42);
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.09);
}

.controls-panel select {
  min-width: 0;
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  padding: 7px 9px;
  color: var(--ink);
  background: rgba(0, 0, 0, 0.24);
  font: 800 11px/1 ui-monospace, "SFMono-Regular", "Menlo", monospace;
}

.timeline-panel,
.timeline-library-panel {
  background: rgba(255, 255, 255, 0.03);
}

.timeline-actions {
  padding: 8px 14px 0;
}

.timeline-actions button {
  width: 100%;
}

.timeline-module-toolbar {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding: 8px 14px 2px;
}

.timeline-module-toolbar button {
  width: 100%;
  padding-inline: 8px;
}

.timeline-module-list {
  display: grid;
  gap: 10px;
  padding: 10px 14px 2px;
}

.timeline-module {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 14px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03)),
    rgba(0, 0, 0, 0.12);
}

.timeline-module[draggable="true"] {
  cursor: grab;
}

.timeline-module.is-dragging {
  opacity: 0.48;
  cursor: grabbing;
  transform: scale(0.985);
}

.timeline-module-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 9px;
  padding: 9px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.timeline-module-index {
  display: inline-grid;
  width: 28px;
  height: 28px;
  place-items: center;
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.76);
  background: rgba(255, 255, 255, 0.12);
  font: 900 10px/1 ui-monospace, "SFMono-Regular", "Menlo", monospace;
}

.timeline-module-title {
  min-width: 0;
}

.timeline-module-title strong {
  display: block;
  color: rgba(255, 255, 255, 0.92);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.timeline-module-title span {
  display: block;
  overflow: hidden;
  margin-top: 3px;
  color: rgba(255, 255, 255, 0.46);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.timeline-module-controls {
  display: inline-flex;
  gap: 4px;
}

.timeline-module-controls button {
  width: 28px;
  min-height: 28px;
  padding: 0;
  color: rgba(255, 255, 255, 0.78);
  background: rgba(255, 255, 255, 0.1);
}

.timeline-module-controls button:disabled {
  opacity: 0.28;
  cursor: default;
}

.timeline-module-body {
  display: grid;
  gap: 8px;
  padding: 10px;
}

.timeline-module-body label {
  grid-template-columns: minmax(70px, 0.7fr) 1.3fr;
  padding: 0;
}

.timeline-module-body .timeline-module-checkbox {
  grid-template-columns: minmax(70px, 0.7fr) auto;
  justify-content: start;
}

.timeline-module-checkbox input {
  width: 18px;
  height: 18px;
}

.timeline-module-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.timeline-module-grid label {
  grid-template-columns: 1fr;
  gap: 5px;
}

.timeline-module-grid input {
  min-width: 0;
}

.timeline-library-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.timeline-library-actions button:first-child {
  grid-column: 1 / -1;
}

.timeline-library-actions button:disabled {
  opacity: 0.46;
  cursor: default;
}

.timeline-hint {
  margin: 0;
  padding: 8px 14px 14px;
  color: rgba(255, 255, 255, 0.48);
  font: 800 10px/1.45 ui-monospace, "SFMono-Regular", "Menlo", monospace;
  letter-spacing: 0.06em;
}

#reset-button {
  width: 100%;
}

.save-status {
  min-height: 16px;
  color: rgba(255, 255, 255, 0.62);
  font: 800 10px/1.2 ui-monospace, "SFMono-Regular", "Menlo", monospace;
  letter-spacing: 0.08em;
  text-align: center;
}

.readout {
  position: fixed;
  right: max(16px, env(safe-area-inset-right));
  bottom: max(16px, env(safe-area-inset-bottom));
  z-index: 4;
  color: rgba(255, 255, 255, 0.76);
  font: 800 11px/1 ui-monospace, "SFMono-Regular", "Menlo", monospace;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.25);
  pointer-events: none;
}

body.is-drawing .toolbar,
body.is-drawing .readout {
  opacity: 0.16;
}

.front-toolbar,
.front-cta {
  --glass-shift-x: 0px;
  --glass-shift-y: 0px;
  --glass-hover-y: 0px;
  --glass-tilt-x: 0deg;
  --glass-tilt-y: 0deg;
  --glass-glow-x: 50%;
  --glass-glow-y: 50%;
  transform:
    translateX(-50%)
    translate3d(var(--glass-shift-x), calc(var(--glass-shift-y) + var(--glass-hover-y)), 0)
    perspective(620px)
    rotateX(var(--glass-tilt-x))
    rotateY(var(--glass-tilt-y));
  transform-style: preserve-3d;
  will-change: transform;
  transition:
    transform 520ms cubic-bezier(0.18, 0.82, 0.24, 1),
    box-shadow 420ms ease,
    background 420ms ease,
    color 220ms ease,
    opacity 520ms ease;
}

.front-toolbar {
  position: fixed;
  left: 50%;
  top: max(18px, env(safe-area-inset-top));
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 0;
  overflow: hidden;
  isolation: isolate;
  width: min(154px, calc(100vw - 32px));
  height: 36px;
  padding: 3px;
  background:
    radial-gradient(circle at 12% 12%, rgba(255, 255, 255, 0.48), transparent 32%) padding-box,
    radial-gradient(circle at 82% 92%, rgba(255, 255, 255, 0.08), transparent 48%) padding-box,
    linear-gradient(135deg, rgba(255, 255, 255, 0.28), rgba(255, 255, 255, 0.08)) padding-box,
    linear-gradient(145deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.28) 40%, rgba(255, 255, 255, 0.12) 72%, rgba(255, 255, 255, 0.64)) border-box;
  border: 1px solid transparent;
  border-radius: 999px;
  backdrop-filter: blur(20px) saturate(1.35);
  -webkit-backdrop-filter: blur(20px) saturate(1.35);
  box-shadow:
    0 12px 24px rgba(26, 54, 91, 0.16),
    0 2px 6px rgba(22, 44, 72, 0.1),
    inset 0 1px 3px rgba(255, 255, 255, 0.62),
    inset 0 -4px 10px rgba(41, 73, 112, 0.12),
    inset 0 0 0 1px rgba(255, 255, 255, 0.2);
}

.front-toolbar::before {
  position: absolute;
  inset: 2px;
  z-index: -1;
  content: "";
  border-radius: inherit;
  background:
    radial-gradient(94% 78% at var(--glass-glow-x) calc(var(--glass-glow-y) - 50%), rgba(255, 255, 255, 0.58), transparent 42%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.18), transparent 48%, rgba(54, 88, 128, 0.08));
  opacity: 0.8;
  pointer-events: none;
}

.front-toolbar::after {
  content: none;
}

.front-toolbar button {
  flex: 1 1 0;
  min-width: 0;
  height: 30px;
  min-height: 30px;
  padding: 0;
  color: rgba(17, 36, 61, 0.86);
  background: transparent;
  border-radius: 999px;
  box-shadow: none;
  text-shadow: none;
  transition: background 160ms ease, color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.front-toolbar button:hover {
  color: rgba(12, 29, 52, 0.95);
  background: rgba(255, 255, 255, 0.12);
}

.front-toolbar button[aria-pressed="true"] {
  color: rgba(16, 34, 58, 0.96);
  background:
    radial-gradient(circle at 22% 10%, rgba(255, 255, 255, 0.82), transparent 34%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0.24)),
    rgba(255, 255, 255, 0.16);
  box-shadow:
    inset 0 1px 2px rgba(255, 255, 255, 0.84),
    inset 0 -4px 8px rgba(48, 76, 112, 0.11),
    inset 0 0 0 1px rgba(255, 255, 255, 0.58),
    0 3px 8px rgba(33, 59, 91, 0.16);
}

.front-toolbar svg {
  display: block;
  width: 17px;
  height: 17px;
  margin: auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.front-cta {
  position: fixed;
  left: 50%;
  bottom: max(76px, env(safe-area-inset-bottom));
  z-index: 4;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-width: 166px;
  min-height: 58px;
  padding: 0 22px 0 26px;
  color: rgba(15, 35, 61, 0.92);
  font: 800 15px/1 "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  letter-spacing: 0.02em;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 999px;
  background:
    radial-gradient(circle at var(--glass-glow-x) var(--glass-glow-y), rgba(255, 255, 255, 0.62), transparent 34%) padding-box,
    radial-gradient(circle at 86% 90%, rgba(255, 255, 255, 0.12), transparent 48%) padding-box,
    linear-gradient(135deg, rgba(255, 255, 255, 0.34), rgba(255, 255, 255, 0.1)) padding-box,
    linear-gradient(145deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.28) 42%, rgba(255, 255, 255, 0.14) 74%, rgba(255, 255, 255, 0.68)) border-box;
  isolation: isolate;
  overflow: hidden;
  backdrop-filter: blur(20px) saturate(1.35);
  -webkit-backdrop-filter: blur(20px) saturate(1.35);
  box-shadow:
    0 20px 42px rgba(25, 52, 88, 0.18),
    0 4px 10px rgba(22, 44, 72, 0.1),
    inset 0 2px 4px rgba(255, 255, 255, 0.68),
    inset 0 -8px 18px rgba(41, 73, 112, 0.12),
    inset 0 0 0 1px rgba(255, 255, 255, 0.2);
}

.front-cta::before {
  position: absolute;
  inset: 2px;
  z-index: -1;
  content: "";
  border-radius: inherit;
  background:
    radial-gradient(96% 86% at var(--glass-glow-x) calc(var(--glass-glow-y) - 50%), rgba(255, 255, 255, 0.62), transparent 42%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.2), transparent 52%, rgba(54, 88, 128, 0.08));
  opacity: 0.86;
  pointer-events: none;
}

.front-cta:hover {
  --glass-hover-y: -2px;
  color: rgba(9, 27, 50, 0.98);
  box-shadow:
    0 24px 48px rgba(25, 52, 88, 0.2),
    0 6px 14px rgba(22, 44, 72, 0.12),
    inset 0 2px 4px rgba(255, 255, 255, 0.72),
    inset 0 -8px 18px rgba(41, 73, 112, 0.12),
    inset 0 0 0 1px rgba(255, 255, 255, 0.24);
}

.front-cta:active {
  --glass-hover-y: 0px;
}

.front-cta svg {
  display: block;
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.1;
  stroke-linecap: round;
  stroke-linejoin: round;
}

body.front-page.is-drawing .front-toolbar {
  opacity: 0.62;
}

body.front-page.is-drawing .front-cta {
  opacity: 0.62;
}

body.front-page.portfolio-transitioning .front-toolbar,
body.front-page.portfolio-transitioning .front-cta,
body.front-page.portfolio-revealed .front-toolbar,
body.front-page.portfolio-revealed .front-cta {
  opacity: 0;
  pointer-events: none;
}

@media (max-width: 760px) {
  .toolbar {
    top: max(10px, env(safe-area-inset-top));
    flex-wrap: wrap;
    justify-content: center;
    border-radius: 18px;
  }

  .text-control {
    flex: 1 1 100%;
    justify-content: center;
  }

  .text-control input {
    width: min(58vw, 260px);
  }

  .controls-panel {
    top: auto;
    left: 10px;
    right: 10px;
    bottom: 10px;
    width: auto;
    max-height: 58vh;
    border-radius: 16px;
  }

  .front-toolbar {
    width: min(154px, calc(100vw - 22px));
    height: 36px;
    top: max(14px, env(safe-area-inset-top));
  }

  .front-toolbar button {
    height: 30px;
    min-height: 30px;
  }

  .front-toolbar svg {
    width: 17px;
    height: 17px;
  }

  .front-cta {
    bottom: max(54px, env(safe-area-inset-bottom));
    min-width: 148px;
    min-height: 52px;
    padding: 0 19px 0 22px;
    font-size: 14px;
  }

  .front-cta svg {
    width: 18px;
    height: 18px;
  }
}