:root {
  --bg: #111316;
  --panel: #1a1f25;
  --panel-2: #222932;
  --text: #f7f2e8;
  --muted: #a7b0bc;
  --line: rgba(255, 255, 255, 0.12);
  --accent: #ebc86d;
  --accent-2: #67d5c8;
  --danger: #ff8a80;
  --reader-font: 52px;
  --reader-line: 1.55;
  --reader-letter: 1px;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  overflow: hidden;
}

button,
textarea,
input {
  font: inherit;
}

button {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-2);
  color: var(--text);
  min-height: 44px;
  padding: 0 14px;
  cursor: pointer;
}

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

.app-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 400px);
  gap: 16px;
  height: 100dvh;
  padding: 16px;
}

.prompt-panel,
.control-panel {
  min-width: 0;
  border: 1px solid var(--line);
  background: var(--panel);
}

.prompt-panel {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  overflow: hidden;
}

.top-bar,
.transport {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px;
  border-bottom: 1px solid var(--line);
}

.transport {
  border-top: 1px solid var(--line);
  border-bottom: 0;
  justify-content: flex-start;
}

h1,
p {
  margin: 0;
}

h1 {
  font-size: 18px;
  line-height: 1.2;
}

.top-bar p {
  color: var(--muted);
  font-size: 13px;
  margin-top: 3px;
}

.icon-button {
  width: 44px;
  padding: 0;
  font-size: 24px;
}

.reader-wrap {
  position: relative;
  min-height: 0;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(17, 19, 22, 0.94), transparent 15%, transparent 85%, rgba(17, 19, 22, 0.94)),
    #050607;
}

.safe-line {
  position: absolute;
  top: 34%;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), var(--accent-2), transparent);
  opacity: 0.78;
  z-index: 2;
  pointer-events: none;
}

.reader {
  height: 100%;
  min-height: 0;
  overflow: auto;
  scrollbar-width: none;
  padding: 28vh 8vw 45vh;
  outline: none;
}

.reader::-webkit-scrollbar {
  display: none;
}

#promptText {
  max-width: 18em;
  margin: 0 auto;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: anywhere;
  color: var(--text);
  font-size: var(--reader-font);
  line-height: var(--reader-line);
  letter-spacing: var(--reader-letter);
  font-weight: 650;
  text-align: left;
  transform-origin: center center;
}

.mirror-x #promptText {
  transform: scaleX(-1);
}

.mirror-y #promptText {
  transform: scaleY(-1);
}

.mirror-x.mirror-y #promptText {
  transform: scale(-1, -1);
}

.primary-action {
  min-width: 96px;
  border-color: transparent;
  background: var(--accent);
  color: #14110a;
  font-weight: 800;
}

.time-chip {
  display: grid;
  gap: 2px;
  margin-left: auto;
  color: var(--muted);
  min-width: 86px;
  text-align: right;
}

.time-chip span {
  color: var(--text);
  font-weight: 800;
}

.time-chip small {
  font-size: 12px;
}

.control-panel {
  display: flex;
  flex-direction: column;
  gap: 14px;
  overflow: auto;
  padding: 14px;
}

.field-block,
.range-field {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.field-block span,
.range-field span {
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

textarea {
  width: 100%;
  min-height: 220px;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #101419;
  color: var(--text);
  padding: 12px;
  line-height: 1.6;
}

.control-grid {
  display: grid;
  gap: 14px;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.toggle-row,
.button-row {
  display: grid;
  gap: 8px;
}

.toggle-row {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.toggle-row label {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  background: #101419;
}

.toggle-row input {
  width: 18px;
  height: 18px;
  accent-color: var(--accent-2);
}

.button-row {
  grid-template-columns: 1fr 1fr;
}

.focus-only {
  display: none;
}

.is-landscape .app-shell {
  grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
}

.is-landscape #promptText {
  max-width: 24em;
}

.focus-mode .app-shell {
  display: grid;
  grid-template-columns: 1fr;
  height: 100dvh;
  padding: 0;
}

.focus-mode .prompt-panel {
  height: 100dvh;
  border: 0;
}

.focus-mode .reader {
  padding-bottom: 230px;
}

.focus-mode .top-bar {
  display: none;
}

.focus-mode .control-panel {
  position: fixed;
  left: max(12px, env(safe-area-inset-left));
  right: max(12px, env(safe-area-inset-right));
  bottom: calc(max(68px, env(safe-area-inset-bottom) + 68px));
  z-index: 6;
  width: auto;
  min-height: 0;
  max-height: none;
  display: grid;
  grid-template-columns: auto auto;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 8px 10px;
  border-color: rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  background: rgba(26, 31, 37, 0.88);
  backdrop-filter: blur(18px);
  box-shadow: 0 18px 46px rgba(0, 0, 0, 0.32);
  overflow-x: auto;
  overflow-y: hidden;
}

.focus-mode.controls-hidden .control-panel {
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
}

.focus-mode .field-block {
  display: none;
}

.focus-mode .control-grid {
  display: grid;
  grid-template-columns: repeat(2, 210px);
  gap: 12px;
  min-width: 0;
}

.focus-mode .range-field {
  gap: 3px;
  min-width: 0;
  width: 210px;
}

.focus-mode .range-field span {
  font-size: 11px;
  line-height: 1.1;
}

.focus-mode .range-field input {
  height: 18px;
}

.focus-mode .toggle-row {
  display: grid;
  grid-template-columns: repeat(2, max-content);
  gap: 8px;
}

.focus-mode .toggle-row label {
  min-height: 34px;
  padding: 0 9px;
  white-space: nowrap;
  font-size: 12px;
}

.focus-mode .button-row {
  display: none;
}

.focus-mode .transport .focus-only {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.focus-mode .transport {
  position: fixed;
  left: max(12px, env(safe-area-inset-left));
  right: max(12px, env(safe-area-inset-right));
  bottom: max(12px, env(safe-area-inset-bottom));
  z-index: 5;
  border: 1px solid var(--line);
  background: rgba(26, 31, 37, 0.86);
  backdrop-filter: blur(16px);
  overflow-x: auto;
  overflow-y: hidden;
  white-space: nowrap;
}

.focus-mode .transport button {
  flex: 0 0 auto;
}

@media (max-width: 760px) {
  .focus-mode .control-panel {
    grid-template-columns: 1fr;
    justify-content: stretch;
    bottom: calc(max(102px, env(safe-area-inset-bottom) + 102px));
    padding: 8px;
    max-height: 112px;
  }

  .focus-mode .control-grid {
    grid-template-columns: repeat(2, minmax(124px, 1fr));
    gap: 8px;
  }

  .focus-mode .range-field {
    width: auto;
  }

  .focus-mode .toggle-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
  }

  .focus-mode .toggle-row label {
    justify-content: center;
    min-height: 36px;
  }

  .focus-mode .transport {
    display: flex;
    gap: 8px;
    padding: 8px;
  }

  .focus-mode .transport button {
    min-height: 46px;
    padding: 0 14px;
  }

  .focus-mode .primary-action {
    min-width: 96px;
  }

  .focus-mode .time-chip {
    flex: 0 0 auto;
    margin-left: auto;
    min-width: 78px;
  }

  .focus-mode .reader {
    padding: 26vh 7vw 270px;
  }
}

@media (max-width: 520px) and (orientation: portrait) {
  .focus-mode .control-panel {
    left: 8px;
    right: 8px;
    bottom: calc(max(96px, env(safe-area-inset-bottom) + 96px));
  }

  .focus-mode .control-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .focus-mode .toggle-row label {
    font-size: 13px;
    padding: 0 8px;
  }

  .focus-mode .transport {
    left: 8px;
    right: 8px;
  }

  .focus-mode .transport button {
    min-width: 84px;
    font-size: 14px;
  }

  .focus-mode #focusFitBtn {
    min-width: 118px;
  }
}

@media (max-width: 860px) {
  .app-shell {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(0, 58dvh) minmax(0, 1fr);
    height: 100dvh;
    min-height: 0;
    padding: 10px;
    overflow: hidden;
  }

  .prompt-panel {
    min-height: 0;
  }

  .reader {
    padding-left: 6vw;
    padding-right: 6vw;
  }

  .control-panel {
    min-height: 0;
    max-height: none;
  }

  textarea {
    min-height: 170px;
  }
}

@media (orientation: landscape) and (max-height: 560px) {
  .app-shell {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 34vw);
    grid-template-rows: 1fr;
    height: 100dvh;
    overflow: hidden;
  }

  .top-bar,
  .transport {
    padding: 8px;
  }

  .reader {
    padding-top: 22vh;
  }

  textarea {
    min-height: 120px;
  }
}