:root {
  --bg-primary: #090d16;
  --bg-card: #131b2e;
  --bg-input: #1a243b;
  --border-color: #24324f;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --accent: #38bdf8;
  --accent-hover: #0ea5e9;
  --accent-glow: rgba(56, 189, 248, 0.25);
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --radius-lg: 14px;
  --radius-md: 8px;
  --radius-sm: 6px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Pretendard Variable", Pretendard, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  padding: 24px;
}

.container {
  max-width: 960px;
  margin: 0 auto;
}

header {
  text-align: center;
  margin-bottom: 28px;
}

.badge-row {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 12px;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 9999px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.badge-client {
  background: rgba(56, 189, 248, 0.15);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.badge-success {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

h1 {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #ffffff 30%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 6px;
}

.subtitle {
  color: var(--text-muted);
  font-size: 15px;
}

.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.card-title {
  font-size: 16px;
  font-weight: 700;
  color: #e2e8f0;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.model-config-row {
  display: flex;
  gap: 12px;
  align-items: center;
}

input[type="text"], textarea, select {
  width: 100%;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-main);
  padding: 10px 14px;
  font-size: 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

input[type="text"]:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

textarea {
  min-height: 84px;
  resize: vertical;
}

.btn {
  background: var(--accent);
  color: #0f172a;
  border: none;
  border-radius: var(--radius-md);
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 0.2s, transform 0.1s;
  white-space: nowrap;
}

.btn:hover:not(:disabled) {
  background: var(--accent-hover);
}

.btn:active:not(:disabled) {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-secondary {
  background: #334155;
  color: #f8fafc;
}

.btn-secondary:hover:not(:disabled) {
  background: #475569;
}

.btn-large {
  width: 100%;
  padding: 14px 20px;
  font-size: 16px;
  margin-top: 10px;
}

.progress-bar-bg {
  width: 100%;
  height: 8px;
  background-color: #1e293b;
  border-radius: 999px;
  overflow: hidden;
  margin-top: 12px;
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #38bdf8, #818cf8);
  transition: width 0.3s ease;
}

.progress-status {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 6px;
}

.preset-container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.preset-chip {
  background-color: #1e293b;
  border: 1px solid var(--border-color);
  color: #cbd5e1;
  padding: 6px 12px;
  border-radius: 9999px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.preset-chip:hover {
  background-color: #334155;
  color: #ffffff;
  border-color: var(--accent);
}

.controls-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-top: 14px;
}

.control-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.control-label {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-muted);
}

.control-val {
  color: var(--accent);
  font-weight: 600;
}

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

.g2p-preview-card {
  background-color: #0b1120;
  border: 1px dashed #334155;
  border-radius: var(--radius-md);
  padding: 12px 16px;
  margin-top: 12px;
  font-size: 13px;
}

.g2p-row {
  margin-bottom: 6px;
}

.g2p-label {
  color: var(--accent);
  font-weight: 600;
  margin-right: 8px;
}

.g2p-val {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  color: #e2e8f0;
}

.result-card {
  background: linear-gradient(180deg, #162035 0%, #111827 100%);
  border: 1px solid #38bdf840;
}

.waveform-canvas {
  width: 100%;
  height: 90px;
  border-radius: var(--radius-md);
  background-color: #0f172a;
  margin-bottom: 12px;
}

.audio-controls {
  display: flex;
  align-items: center;
  gap: 14px;
}

audio {
  flex-grow: 1;
  height: 42px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 14px;
  text-align: center;
  background-color: rgba(15, 23, 42, 0.6);
  padding: 12px;
  border-radius: var(--radius-md);
}

.stat-item .stat-title {
  font-size: 12px;
  color: var(--text-muted);
}

.stat-item .stat-val {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
}

footer {
  text-align: center;
  color: #64748b;
  font-size: 13px;
  margin-top: 32px;
  padding-bottom: 16px;
}

footer a {
  color: var(--accent);
  text-decoration: none;
}