:root {
  color-scheme: light;
  --bg: #f5f5f7;
  --surface: rgba(255, 255, 255, 0.78);
  --surface-strong: #ffffff;
  --surface-soft: rgba(246, 247, 249, 0.88);
  --text: #111114;
  --text-soft: #63636a;
  --text-muted: #8a8a93;
  --line: rgba(60, 60, 67, 0.16);
  --blue: #007aff;
  --blue-strong: #005ecb;
  --rose: #ff3b5f;
  --green: #34c759;
  --amber: #ff9f0a;
  --violet: #af52de;
  --focus: rgba(0, 122, 255, 0.36);
  --blue-tint: rgba(0, 122, 255, 0.12);
  --blue-border: rgba(0, 122, 255, 0.46);
  --rose-border: rgba(255, 59, 95, 0.48);
  --green-border: rgba(52, 199, 89, 0.48);
  --shadow: 0 18px 45px rgba(24, 24, 29, 0.12);
  --shadow-soft: 0 10px 24px rgba(24, 24, 29, 0.08);
  --radius: 8px;
  --tap: 44px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Segoe UI",
    "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #101012;
  --surface: rgba(28, 28, 31, 0.82);
  --surface-strong: #1f1f23;
  --surface-soft: rgba(36, 36, 40, 0.88);
  --text: #f5f5f7;
  --text-soft: #c8c8cf;
  --text-muted: #8f8f99;
  --line: rgba(235, 235, 245, 0.14);
  --blue: #0a84ff;
  --blue-strong: #58a6ff;
  --rose: #ff5470;
  --green: #32d74b;
  --amber: #ffb340;
  --violet: #bf5af2;
  --focus: rgba(10, 132, 255, 0.44);
  --blue-tint: rgba(10, 132, 255, 0.18);
  --blue-border: rgba(10, 132, 255, 0.58);
  --rose-border: rgba(255, 84, 112, 0.58);
  --green-border: rgba(50, 215, 75, 0.58);
  --shadow: 0 18px 45px rgba(0, 0, 0, 0.34);
  --shadow-soft: 0 10px 24px rgba(0, 0, 0, 0.24);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--bg);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background: var(--bg);
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  border: 0;
}

button,
label.file-button,
select {
  cursor: pointer;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
label.file-button:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.app-shell {
  width: min(100%, 1720px);
  min-height: 100vh;
  margin: 0 auto;
  padding: max(16px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right))
    max(16px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 72px;
  margin-bottom: 16px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(22px) saturate(160%);
}

@supports not (backdrop-filter: blur(1px)) {
  .topbar,
  .sidebar,
  .dialog {
    background: var(--surface-strong);
  }
}

.brand-lockup,
.top-actions,
.button-row,
.sample-row,
.scene-header,
.section-heading,
.story-meta,
.composer-actions,
.dialog-header,
.dialog-actions,
.status-strip,
.scene-overlay,
.toggle-row {
  display: flex;
  align-items: center;
}

.brand-lockup {
  min-width: 0;
  gap: 12px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
  border-radius: var(--radius);
  color: #ffffff;
  font-weight: 750;
  background: linear-gradient(135deg, var(--blue), var(--rose));
  box-shadow: 0 8px 18px rgba(0, 122, 255, 0.24);
}

.eyebrow {
  margin: 0 0 3px;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.2;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: clamp(20px, 2vw, 28px);
  line-height: 1.1;
}

h2 {
  margin-bottom: 0;
  font-size: 18px;
  line-height: 1.22;
}

.top-actions {
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.primary-button,
.secondary-button,
.ghost-button,
.icon-button,
.nav-button,
.story-item,
.choice-card {
  min-height: var(--tap);
  border-radius: var(--radius);
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background 160ms ease,
    box-shadow 160ms ease;
}

.primary-button,
.secondary-button,
.ghost-button,
.icon-button,
.nav-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 14px;
  font-weight: 700;
  white-space: nowrap;
}

.primary-button {
  color: #ffffff;
  background: var(--blue);
  box-shadow: 0 10px 24px rgba(0, 122, 255, 0.26);
}

.primary-button:hover {
  background: var(--blue-strong);
  transform: translateY(-1px);
}

.secondary-button,
.ghost-button,
.icon-button,
.nav-button {
  color: var(--text);
  border: 1px solid var(--line);
  background: var(--surface-soft);
}

.secondary-button:hover,
.ghost-button:hover,
.icon-button:hover,
.nav-button:hover,
.story-item:hover,
.choice-card:hover {
  transform: translateY(-1px);
  border-color: var(--blue-border);
}

.icon-button {
  width: var(--tap);
  padding: 0;
  font-size: 20px;
}

.ghost-button {
  min-height: 34px;
  padding: 0 10px;
  color: var(--blue);
  background: transparent;
}

.nav-button.is-active {
  color: #ffffff;
  border-color: var(--blue);
  background: var(--blue);
}

.auth-status {
  display: inline-flex;
  align-items: center;
  min-height: var(--tap);
  max-width: 220px;
  padding: 0 10px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text-soft);
  background: var(--surface-soft);
  font-size: 13px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.segmented-control {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 12px;
}

[hidden] {
  display: none !important;
}

#importFile,
#scenarioFile {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}

.view {
  display: none;
}

.view.is-active {
  display: block;
}

.game-layout {
  display: grid;
  grid-template-columns: minmax(250px, 320px) minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.sidebar {
  position: sticky;
  top: 104px;
  display: grid;
  gap: 14px;
  max-height: calc(100vh - 120px);
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(22px) saturate(160%);
}

.panel-section {
  padding: 14px;
  border-bottom: 1px solid var(--line);
}

.panel-section:last-child {
  border-bottom: 0;
}

.section-heading {
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.section-heading span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 30px;
  height: 28px;
  padding: 0 8px;
  border-radius: var(--radius);
  color: var(--text-soft);
  background: var(--surface-soft);
}

.story-list,
.inspiration-list,
.memory-list {
  display: grid;
  gap: 10px;
}

.story-item {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--line);
  color: var(--text);
  text-align: left;
  background: var(--surface-soft);
}

.story-item[aria-current="true"] {
  border-color: var(--blue-border);
  background: var(--blue-tint);
}

.story-item strong,
.choice-card strong {
  display: block;
  margin-bottom: 5px;
  font-size: 14px;
  line-height: 1.25;
}

.story-item span,
.choice-card span,
.inspiration-item p,
.memory-item p {
  color: var(--text-soft);
  font-size: 13px;
  line-height: 1.45;
}

.field-label {
  display: block;
  margin: 13px 0 7px;
  color: var(--text-soft);
  font-size: 13px;
  font-weight: 700;
}

.text-input,
.action-input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  background: var(--surface-strong);
}

.text-input {
  height: var(--tap);
  padding: 0 12px;
}

.action-input {
  min-height: 108px;
  padding: 12px;
  resize: vertical;
  line-height: 1.55;
}

.range-input {
  width: 100%;
  accent-color: var(--blue);
}

.toggle-row {
  justify-content: space-between;
  gap: 12px;
  min-height: var(--tap);
  margin-top: 10px;
  color: var(--text-soft);
  font-weight: 700;
}

.toggle-row input {
  width: 44px;
  height: 24px;
  accent-color: var(--blue);
}

.stage {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.mobile-play-actions {
  display: none;
  gap: 8px;
}

.scene-header {
  justify-content: space-between;
  gap: 16px;
  min-height: 62px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

.scene-header h2 {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: min(58vw, 720px);
}

.status-strip {
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.status-strip span,
.story-meta span,
.scene-overlay span {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 10px;
  border-radius: var(--radius);
  color: var(--text-soft);
  font-size: 13px;
  font-weight: 700;
  background: var(--surface-soft);
}

.scene-canvas-wrap {
  position: relative;
  overflow: hidden;
  min-height: 260px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #0c0d10;
  box-shadow: var(--shadow);
}

#sceneCanvas {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1440 / 680;
}

.scene-overlay {
  position: absolute;
  right: 12px;
  bottom: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.scene-overlay span {
  color: #ffffff;
  background: rgba(0, 0, 0, 0.42);
  backdrop-filter: blur(16px);
}

.story-card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-strong);
  box-shadow: var(--shadow-soft);
}

.story-meta {
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 14px;
}

.story-card p {
  margin-bottom: 0;
  color: var(--text);
  font-size: clamp(17px, 1.35vw, 21px);
  line-height: 1.75;
}

.choice-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.choice-card {
  width: 100%;
  min-height: 132px;
  padding: 14px;
  border: 1px solid var(--line);
  color: var(--text);
  text-align: left;
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

.choice-card[data-kind="danger"] {
  border-color: var(--rose-border);
}

.choice-card[data-kind="logic"] {
  border-color: var(--blue-border);
}

.choice-card[data-kind="human"] {
  border-color: var(--green-border);
}

.action-composer {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

.composer-actions {
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 12px;
}

.inspiration-item,
.memory-item {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-soft);
}

.inspiration-item strong,
.memory-item strong {
  display: block;
  margin-bottom: 5px;
  font-size: 14px;
  line-height: 1.28;
}

.inspiration-item p,
.memory-item p {
  margin-bottom: 0;
}

.inspiration-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 9px;
}

.inspiration-tags span {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 8px;
  border-radius: var(--radius);
  color: var(--text-soft);
  font-size: 12px;
  font-weight: 700;
  background: var(--surface-strong);
}

.tool-grid {
  display: grid;
}

.settings-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  align-items: start;
}

.settings-card {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(22px) saturate(160%);
}

.button-row,
.sample-row {
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.inline-file {
  margin-top: 14px;
}

.status-text {
  min-height: 20px;
  margin: 10px 0 0;
  color: var(--text-soft);
  font-size: 13px;
  line-height: 1.45;
}

.research-results {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.research-card {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-soft);
}

.research-card strong {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
}

.research-card p {
  margin-bottom: 0;
  color: var(--text-soft);
  font-size: 13px;
  line-height: 1.5;
}

.full-width {
  width: 100%;
  margin-top: 12px;
}

.dialog {
  width: min(620px, calc(100vw - 28px));
  max-height: min(86vh, 860px);
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(26px) saturate(160%);
}

.wide-dialog {
  width: min(760px, calc(100vw - 28px));
}

.dialog::backdrop {
  background: rgba(0, 0, 0, 0.36);
}

.dialog form {
  margin: 0;
}

.dialog-header {
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.dialog-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.dialog-actions {
  justify-content: flex-end;
  gap: 8px;
  padding: 0;
  margin: 16px 0 0;
}

.prompt-output {
  min-height: 220px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}

@media (max-width: 1180px) {
  .game-layout {
    grid-template-columns: minmax(230px, 300px) minmax(0, 1fr);
  }

  .settings-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .app-shell {
    padding: 8px;
  }

  .topbar {
    position: sticky;
    align-items: flex-start;
    flex-direction: column;
    min-height: 0;
    margin-bottom: 8px;
  }

  .top-actions {
    width: 100%;
    flex-wrap: nowrap;
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 2px;
    scrollbar-width: none;
  }

  .top-actions::-webkit-scrollbar {
    display: none;
  }

  .top-actions .primary-button,
  .top-actions .secondary-button,
  .top-actions .file-button,
  .top-actions .nav-button,
  .top-actions .auth-status {
    flex: 0 0 auto;
  }

  .game-layout {
    grid-template-columns: 1fr;
  }

  .left-panel {
    display: none;
  }

  .mobile-play-actions {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .mobile-play-actions .secondary-button {
    min-width: 0;
    padding: 0 8px;
    font-size: 13px;
  }

  .scene-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .scene-header h2 {
    max-width: 100%;
  }

  .status-strip {
    justify-content: flex-start;
  }

  .choice-grid,
  .dialog-grid {
    grid-template-columns: 1fr;
  }

  .choice-card {
    min-height: 108px;
  }

  .action-input {
    min-height: 84px;
  }

  .composer-actions {
    justify-content: stretch;
  }

  .composer-actions button {
    flex: 1 1 160px;
  }
}

@media (max-width: 520px) {
  :root {
    --tap: 42px;
  }

  h1 {
    font-size: 20px;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
    flex-basis: 36px;
  }

  .brand-lockup h1 {
    font-size: 18px;
  }

  .scene-canvas-wrap {
    min-height: 178px;
  }

  .story-card {
    padding: 14px;
  }

  .story-card p {
    font-size: 16px;
  }
}