:root {
  --bg-top: #f9efe3;
  --bg-bottom: #d6ecff;
  --panel: rgba(255, 255, 255, 0.76);
  --panel-border: rgba(35, 54, 86, 0.12);
  --text: #122033;
  --muted: #5b6780;
  --accent: #ff6f3c;
  --accent-deep: #cf4f23;
  --secondary: #1f6feb;
  --success: #18794e;
  --warn: #8a5a00;
  --error: #b42318;
  --shadow: 0 24px 60px rgba(31, 50, 81, 0.12);
  --radius: 24px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Trebuchet MS", "Avenir Next", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.95), transparent 30%),
    radial-gradient(circle at right center, rgba(255, 111, 60, 0.18), transparent 28%),
    linear-gradient(160deg, var(--bg-top), var(--bg-bottom));
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(18, 32, 51, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18, 32, 51, 0.04) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.65), transparent);
}

.shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 60px;
}

.hero {
  padding: 12px 6px 28px;
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 0.9rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--secondary);
}

.hero h1 {
  margin: 0;
  max-width: 10ch;
  font-size: clamp(2.5rem, 6vw, 5rem);
  line-height: 0.98;
}

.lede {
  max-width: 700px;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--muted);
}

.status-bar,
.meta-row,
.field-group,
.actions,
.voice-name-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.status-bar,
.meta-row,
.actions {
  justify-content: space-between;
}

.grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 20px;
}

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

.form-card,
.output-card {
  padding: 22px;
}

.field,
.checkbox-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
}

.helper-text {
  margin: -6px 0 18px;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.6;
}

.helper-panel {
  margin: -2px 0 18px;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(31, 111, 235, 0.08);
  color: var(--text);
}

.helper-panel strong {
  display: block;
  margin-bottom: 8px;
}

.helper-panel p {
  margin: 6px 0;
  color: var(--muted);
  line-height: 1.6;
}

.helper-panel code {
  padding: 2px 6px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.66);
}

.field span,
.checkbox-field span {
  font-size: 0.94rem;
  font-weight: 700;
}

textarea,
select,
input[type="text"] {
  width: 100%;
  border: 1px solid rgba(18, 32, 51, 0.12);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.84);
  color: var(--text);
  padding: 14px 16px;
  font: inherit;
}

input:disabled,
select:disabled,
textarea:disabled {
  cursor: not-allowed;
  opacity: 0.72;
}

textarea {
  resize: vertical;
  min-height: 190px;
}

textarea[readonly] {
  min-height: 130px;
  background: rgba(246, 250, 255, 0.92);
  border-style: dashed;
}

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

.slider-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.checkbox-field {
  flex-direction: row;
  align-items: center;
}

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

.primary-button,
.ghost-button,
.inline-button,
.download-link {
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.full-button {
  width: 100%;
}

.preset-strip {
  display: flex;
  gap: 10px;
  margin: -4px 0 14px;
  flex-wrap: wrap;
}

.primary-button {
  color: white;
  background: linear-gradient(135deg, var(--accent), #ff9a4a);
  box-shadow: 0 12px 24px rgba(255, 111, 60, 0.28);
}

.ghost-button,
.inline-button,
.download-link {
  color: var(--text);
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(18, 32, 51, 0.08);
}

.primary-button:hover,
.ghost-button:hover,
.inline-button:hover,
.download-link:hover {
  transform: translateY(-1px);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  padding: 10px 14px;
  background: rgba(31, 111, 235, 0.12);
  color: var(--secondary);
  font-weight: 700;
}

.status-pill[data-status="ok"] {
  background: rgba(24, 121, 78, 0.14);
  color: var(--success);
}

.status-pill[data-status="warn"] {
  background: rgba(138, 90, 0, 0.14);
  color: var(--warn);
}

.status-pill[data-status="error"] {
  background: rgba(180, 35, 24, 0.12);
  color: var(--error);
}

.message {
  min-height: 76px;
  padding: 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
  line-height: 1.6;
}

.message[data-tone="success"] {
  border-left: 4px solid var(--success);
}

.message[data-tone="warn"] {
  border-left: 4px solid var(--warn);
}

.message[data-tone="error"] {
  border-left: 4px solid var(--error);
}

.message[data-tone="info"] {
  border-left: 4px solid var(--secondary);
}

audio {
  width: 100%;
  margin: 18px 0 14px;
}

.muted {
  color: var(--muted);
  font-size: 0.92rem;
}

.voice-info {
  margin-top: 16px;
}

.voice-info p {
  color: var(--muted);
  line-height: 1.65;
}

.voice-info code {
  padding: 2px 6px;
  border-radius: 8px;
  background: rgba(31, 111, 235, 0.08);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  padding: 7px 10px;
  border-radius: 999px;
  background: rgba(31, 111, 235, 0.1);
  color: var(--secondary);
  font-size: 0.82rem;
}

.hidden {
  display: none;
}

@media (max-width: 920px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    max-width: none;
  }
}

@media (max-width: 640px) {
  .shell {
    width: min(100% - 18px, 1120px);
    padding-top: 18px;
  }

  .slider-grid,
  .field-group,
  .status-bar,
  .actions,
  .meta-row {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: stretch;
  }
}