:root {
  --bg: #f5f2ea;
  --bg-accent: #dfd6c4;
  --glow-1: #ffffff80;
  --glow-2: #bacad180;
  --panel: #ffffffd9;
  --text: #1f2530;
  --muted: #5b6370;
  --primary: #1b5e7a;
  --primary-strong: #0f4056;
  --border: #c8c8bc;
  --shadow: 0 10px 35px rgba(22, 34, 51, 0.14);
  --control-bg: #ffffff;
  --viewer-bg: #f8fbfd;
  --viewer-border: #9aa9b6;
  --viewer-text: #0f1a24;
  --pivot: #bf2a2a;
  --btn-bg: #d8e3e8;
  --btn-text: #1b2d38;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-size: 17px;
  -webkit-text-size-adjust: 100%;
  font-family: "Source Sans 3", system-ui, sans-serif;
  background:
    radial-gradient(circle at 20% 15%, var(--glow-1) 0%, transparent 42%),
    radial-gradient(circle at 85% 80%, var(--glow-2) 0%, transparent 35%),
    linear-gradient(160deg, var(--bg) 0%, var(--bg-accent) 100%);
}

body[data-theme="dark-blue"] {
  --bg: #081524;
  --bg-accent: #11263f;
  --glow-1: #5f8cbc33;
  --glow-2: #83a6d040;
  --panel: #15273bcc;
  --text: #e7eef9;
  --muted: #bbcbdd;
  --primary: #83b3e4;
  --primary-strong: #9ec4ea;
  --border: #406181;
  --shadow: 0 12px 40px rgba(1, 7, 16, 0.55);
  --control-bg: #0f1f31;
  --viewer-bg: #0b1a2b;
  --viewer-border: #4f739a;
  --viewer-text: #f2f7ff;
  --pivot: #ff6961;
  --btn-bg: #233c56;
  --btn-text: #e8f2ff;
}

body[data-theme="black"] {
  --bg: #000000;
  --bg-accent: #0f0f0f;
  --glow-1: #ffffff14;
  --glow-2: #ffffff08;
  --panel: #111111e6;
  --text: #f2f2f2;
  --muted: #b5b5b5;
  --primary: #f2f2f2;
  --primary-strong: #ffffff;
  --border: #3e3e3e;
  --shadow: 0 12px 45px rgba(0, 0, 0, 0.7);
  --control-bg: #0a0a0a;
  --viewer-bg: #000000;
  --viewer-border: #505050;
  --viewer-text: #ffffff;
  --pivot: #ff4a4a;
  --btn-bg: #2b2b2b;
  --btn-text: #f3f3f3;
}

body[data-theme="inverted"] {
  --bg: #ffffff;
  --bg-accent: #f2f2f2;
  --glow-1: #00000010;
  --glow-2: #00000009;
  --panel: #ffffff;
  --text: #000000;
  --muted: #262626;
  --primary: #000000;
  --primary-strong: #1a1a1a;
  --border: #1f1f1f;
  --shadow: 0 10px 32px rgba(0, 0, 0, 0.22);
  --control-bg: #ffffff;
  --viewer-bg: #ffffff;
  --viewer-border: #000000;
  --viewer-text: #000000;
  --pivot: #c60000;
  --btn-bg: #ffffff;
  --btn-text: #000000;
}

.app-shell {
  width: min(1080px, 92vw);
  margin: 1.5rem auto 2rem;
  padding:
    max(0.5rem, env(safe-area-inset-top))
    max(0.8rem, env(safe-area-inset-right))
    max(1rem, env(safe-area-inset-bottom))
    max(0.8rem, env(safe-area-inset-left));
  display: grid;
  gap: 1rem;
}

.hero h1 {
  margin: 0.35rem 0;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
}

.hero p {
  margin: 0;
  max-width: 70ch;
  color: var(--muted);
}

.eyebrow {
  margin: 0;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--primary);
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 1rem;
  backdrop-filter: blur(4px);
}

.input-panel label,
.controls-grid label,
.scrub-wrap label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

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

.sample-select-label {
  margin-top: 0.2rem;
}

.sample-select {
  margin-bottom: 0.65rem;
}

textarea {
  min-height: 180px;
  resize: vertical;
  padding: 0.8rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--control-bg);
  color: inherit;
  font: inherit;
  line-height: 1.5;
}

.input-actions,
.playback-actions {
  margin-top: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.controls-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
}

select {
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--control-bg);
  padding: 0.62rem 0.7rem;
  min-height: 46px;
  color: inherit;
  font: inherit;
}

.btn {
  border: 1px solid transparent;
  border-radius: 10px;
  min-height: 46px;
  padding: 0.62rem 1rem;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: transform 140ms ease, background-color 140ms ease;
  background: var(--btn-bg);
  color: var(--btn-text);
  touch-action: manipulation;
}

.btn:hover:enabled {
  transform: translateY(-1px);
}

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.58;
}

.btn-primary {
  background: var(--primary);
  color: var(--bg);
}

.btn-primary:hover:enabled {
  background: var(--primary-strong);
}

#pivotToggleBtn.is-active {
  border-color: var(--pivot);
}

#focusToggleBtn.is-active {
  border-color: var(--primary);
}

#tickerToggleBtn.is-active {
  border-color: var(--primary);
}

.scrub-wrap {
  margin-top: 0.85rem;
}

.meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.viewer-panel {
  min-height: 230px;
  display: grid;
  place-items: center;
}

#viewerHome {
  width: 100%;
}

#rsvpViewer {
  width: 100%;
  min-height: 170px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  border: 1px dashed var(--viewer-border);
  border-radius: 12px;
  padding: 1rem;
  font-family: "Atkinson Hyperlegible", sans-serif;
  font-size: 56px;
  font-weight: 700;
  letter-spacing: 0.02em;
  background: var(--viewer-bg);
  color: var(--viewer-text);
}

.pivot-letter {
  color: var(--pivot);
}

.word-line {
  display: inline-block;
  white-space: nowrap;
}

.orp-word {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  white-space: nowrap;
}

.orp-left,
.orp-right {
  white-space: nowrap;
}

.orp-left {
  justify-self: end;
  text-align: right;
}

.orp-right {
  justify-self: start;
  text-align: left;
}

.orp-pivot {
  padding: 0 0.02em;
}

.ticker-panel {
  display: grid;
  gap: 0.6rem;
}

.ticker-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
}

.ticker-title {
  margin: 0;
  font-weight: 700;
}

.ticker-track-wrap {
  overflow-x: auto;
  border: 1px solid var(--viewer-border);
  border-radius: 12px;
  background: var(--viewer-bg);
  padding: 0.75rem;
}

.ticker-track {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  white-space: nowrap;
  min-width: 100%;
}

.ticker-word {
  display: inline-block;
  white-space: nowrap;
  padding: 0.35rem 0.45rem;
  border-radius: 6px;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
  touch-action: manipulation;
}

.ticker-word:hover {
  color: var(--viewer-text);
  background: color-mix(in srgb, var(--viewer-border) 28%, transparent);
}

.ticker-word.is-active {
  color: var(--viewer-text);
  background: color-mix(in srgb, var(--primary) 28%, transparent);
  outline: 1px solid color-mix(in srgb, var(--primary) 45%, transparent);
}

.focus-overlay {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: flex;
  align-items: center;
  justify-content: center;
  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));
  background: rgba(0, 0, 0, 0.9);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 160ms ease;
}

body.focus-open .focus-overlay {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.focus-popover {
  width: min(1120px, 96vw);
  max-height: 92vh;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--panel);
  box-shadow: var(--shadow);
  padding: 1rem;
  display: grid;
  gap: 0.75rem;
}

.focus-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.focus-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.focus-title {
  margin: 0;
  font-weight: 700;
}

.focus-viewer-host {
  display: grid;
  place-items: center;
  min-height: min(68vh, 620px);
}

.focus-viewer-host #rsvpViewer {
  min-height: min(62vh, 580px);
}

@media (max-width: 900px) {
  .app-shell {
    width: 100%;
  }

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

  .playback-actions .btn {
    flex: 1 1 calc(50% - 0.65rem);
  }
}

@media (max-width: 740px) {
  .controls-grid {
    grid-template-columns: 1fr;
  }

  .playback-actions .btn {
    flex: 1 1 100%;
  }

  #rsvpViewer {
    min-height: 145px;
    font-size: 44px;
  }
}

@media (hover: none) {
  .btn:hover:enabled {
    transform: none;
  }
}