:root {
  --app-bg: #000000;
  --panel-bg: rgba(10, 10, 10, 0.94);
  --panel-border: rgba(255, 255, 255, 0.12);
  --text-color: #ffffff;
  --muted-color: rgba(255, 255, 255, 0.74);
  --button-bg: rgba(255, 255, 255, 0.08);
  --button-border: rgba(255, 255, 255, 0.18);
  --button-color: #ffffff;
  --input-bg: rgba(255, 255, 255, 0.08);
  --input-border: rgba(255, 255, 255, 0.18);
  --accent: #ffd700;
  --shadow: 0 8px 28px rgba(0, 0, 0, 0.28);
  --font-size: 72px;
  --line-height: 1.22;
  --font-weight: 700;
  --font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --text-side-padding: 0px;
  --panel-gap: 8px;
  --radius: 10px;
}

* {
  box-sizing: border-box;
}

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

body {
  overflow: hidden;
  background: var(--app-bg);
  color: var(--text-color);
  font-family: Arial, Helvetica, sans-serif;
}

body.theme-light {
  --app-bg: #fbfbfb;
  --panel-bg: rgba(245, 245, 245, 0.96);
  --panel-border: rgba(0, 0, 0, 0.14);
  --text-color: #111111;
  --muted-color: rgba(0, 0, 0, 0.65);
  --button-bg: rgba(0, 0, 0, 0.06);
  --button-border: rgba(0, 0, 0, 0.16);
  --button-color: #111111;
  --input-bg: rgba(0, 0, 0, 0.04);
  --input-border: rgba(0, 0, 0, 0.16);
  --shadow: 0 8px 28px rgba(0, 0, 0, 0.12);
}

.app-shell {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--app-bg);
}

.prompter-stage {
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
  background: var(--app-bg);
  -webkit-overflow-scrolling: touch;
}

.text-frame {
  position: relative;
  min-height: 100%;
  padding-top: env(safe-area-inset-top, 0px);
  padding-right: var(--text-side-padding);
  padding-bottom: 0;
  padding-left: var(--text-side-padding);
}

.prompter-text {
  margin: 0;
  min-height: 100%;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: anywhere;
  color: var(--text-color);
  font-size: var(--font-size);
  line-height: var(--line-height);
  font-weight: var(--font-weight);
  font-family: var(--font-family);
}

.empty-state {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 6px;
  padding: 16px;
  text-align: center;
  color: var(--muted-color);
  pointer-events: none;
}

.empty-state[hidden] {
  display: none !important;
}

.empty-state p {
  margin: 0;
  font-size: 15px;
  line-height: 1.4;
}

.control-panel {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--panel-gap);
  padding: 8px calc(10px + env(safe-area-inset-right, 0px)) calc(8px + env(safe-area-inset-bottom, 0px)) calc(10px + env(safe-area-inset-left, 0px));
  border-top: 1px solid var(--panel-border);
  background: var(--panel-bg);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.controls-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.control-group {
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: 36px;
  padding: 6px 8px;
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  background: var(--button-bg);
}

.group-label,
.editor-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--muted-color);
}

.slider-group input[type="range"] {
  width: min(180px, 30vw);
}

select,
textarea,
button,
input[type="range"] {
  font: inherit;
}

select,
textarea {
  color: var(--button-color);
  background: var(--input-bg);
}

select {
  min-width: 92px;
  height: 32px;
  padding: 4px 8px;
  border: 1px solid var(--input-border);
  border-radius: 8px;
}

button {
  border: 1px solid var(--button-border);
  border-radius: 8px;
  background: var(--button-bg);
  color: var(--button-color);
  cursor: pointer;
}

button:hover,
select:hover,
textarea:hover {
  border-color: var(--accent);
}

button:focus-visible,
select:focus-visible,
textarea:focus-visible,
input[type="range"]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.icon-button,
.action-button {
  min-height: 32px;
  padding: 0 10px;
  font-weight: 700;
}

.action-group {
  margin-left: auto;
}

.editor-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

#scriptInput {
  width: 100%;
  min-height: 96px;
  max-height: 22dvh;
  resize: vertical;
  padding: 10px 12px;
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
  line-height: 1.45;
}

.controls-hidden .control-panel {
  display: none;
}

.reopen-button {
  position: fixed;
  right: calc(12px + env(safe-area-inset-right, 0px));
  bottom: calc(12px + env(safe-area-inset-bottom, 0px));
  z-index: 40;
  display: none;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  box-shadow: var(--shadow);
}

.controls-hidden .reopen-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

@media (max-width: 860px) {
  .controls-row {
    align-items: stretch;
  }

  .control-group {
    flex-wrap: wrap;
  }

  .slider-group {
    width: 100%;
  }

  .slider-group input[type="range"] {
    flex: 1 1 140px;
    width: auto;
  }

  .action-group {
    margin-left: 0;
  }

  #scriptInput {
    max-height: 26dvh;
  }
}

@media (max-width: 560px) {
  :root {
    --font-size: 54px;
  }

  .control-panel {
    padding-top: 6px;
  }

  .control-group {
    padding: 5px 6px;
  }

  .group-label,
  .editor-label {
    width: 100%;
  }

  select {
    min-width: 0;
    width: 100%;
  }

  .action-group {
    width: 100%;
  }

  .action-button {
    flex: 1 1 0;
  }

  #scriptInput {
    min-height: 84px;
  }
}