:root {
    --bg: #0f0f1a; --surface: #1a1a2e; --surface2: #222240;
    --border: #333355; --accent: #7c5cff; --accent-light: #a78bfa;
    --text: #e8e8f0; --text-muted: #8888aa;
    --success: #4ade80; --warn: #fbbf24; --danger: #f87171;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Segoe UI', system-ui, sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; }

/* Suite nav — top-level app switcher */
.suite-nav { background: #0a0a14; border-bottom: 1px solid var(--border); display: flex; align-items: center; padding: 0 16px; gap: 4px; overflow-x: auto; }
.suite-btn { padding: 14px 20px; cursor: pointer; color: var(--text-muted); font-size: 0.95rem; font-weight: 600; border: none; border-bottom: 3px solid transparent; background: none; display: flex; align-items: center; gap: 8px; white-space: nowrap; transition: all 0.2s; text-decoration: none; }
.suite-btn:hover { color: var(--text); background: rgba(124,92,255,0.08); }
.suite-btn.active { color: var(--accent-light); border-bottom-color: var(--accent); background: rgba(124,92,255,0.1); }
.suite-logo { font-size: 1.1rem; font-weight: 700; color: var(--accent-light); padding: 14px 16px 14px 4px; margin-right: 8px; border-right: 1px solid var(--border); display: flex; align-items: center; gap: 8px; }

.header { background: var(--surface); border-bottom: 1px solid var(--border); padding: 12px 24px; display: flex; align-items: center; gap: 12px; }
.header h1 { font-size: 1.3rem; font-weight: 600; background: linear-gradient(135deg, var(--accent-light), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.header .subtitle { font-size: 0.85rem; color: var(--text-muted); }

.nav-tabs { background: var(--surface); border-bottom: 1px solid var(--border); display: flex; overflow-x: auto; }
.nav-tab { padding: 12px 24px; cursor: pointer; color: var(--text-muted); font-size: 0.9rem; border: none; border-bottom: 2px solid transparent; background: none; display: flex; align-items: center; gap: 6px; white-space: nowrap; transition: all 0.2s; }
.nav-tab:hover { color: var(--text); }
.nav-tab.active { color: var(--accent-light); border-bottom-color: var(--accent); }

.container { max-width: 900px; margin: 0 auto; padding: 24px; display: flex; flex-direction: column; gap: 20px; }
.page { display: none; }
.page.active { display: flex; flex-direction: column; gap: 20px; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 20px; }
.section-title { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 12px; text-transform: uppercase; letter-spacing: 0.05em; }

textarea, input[type="url"], input[type="text"], input[type="number"] { width: 100%; background: var(--surface2); border: 1px solid var(--border); color: var(--text); padding: 12px 14px; border-radius: 8px; font-family: inherit; font-size: 0.95rem; resize: vertical; }
textarea:focus, input:focus { outline: none; border-color: var(--accent); }
textarea { min-height: 150px; }
label { display: block; font-size: 0.85rem; color: var(--text-muted); margin-bottom: 6px; }
select { background: var(--surface2); border: 1px solid var(--border); color: var(--text); padding: 8px 12px; border-radius: 6px; font-size: 0.9rem; }
select:focus { outline: none; border-color: var(--accent); }

.btn { background: var(--accent); border: none; color: #fff; padding: 10px 24px; border-radius: 8px; cursor: pointer; font-size: 0.95rem; font-weight: 500; transition: all 0.2s; display: flex; align-items: center; gap: 6px; }
.btn:hover { filter: brightness(1.15); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-secondary { background: var(--surface2); border: 1px solid var(--border); }
.btn-danger { background: #dc2626; }
.btn-sm { padding: 6px 14px; font-size: 0.85rem; }
.btn-lg { padding: 14px 32px; font-size: 1.1rem; }

.controls-row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.input-row { display: flex; gap: 10px; align-items: end; }
.input-row > * { flex: 1; }

.badge { background: var(--accent); color: #fff; font-size: 0.7rem; padding: 2px 7px; border-radius: 10px; min-width: 18px; text-align: center; }
.badge:empty { display: none; }

.loading { display: none; align-items: center; gap: 8px; color: var(--accent-light); }
.loading.active { display: flex; }
.spinner { width: 16px; height: 16px; border: 2px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.empty-state { text-align: center; padding: 40px 20px; color: var(--text-muted); }
.empty-state .emoji { font-size: 2.5rem; margin-bottom: 12px; }

.upload-zone { border: 2px dashed var(--border); border-radius: 12px; padding: 40px; text-align: center; color: var(--text-muted); cursor: pointer; transition: all 0.2s; }
.upload-zone:hover, .upload-zone.dragover { border-color: var(--accent); color: var(--accent-light); }
.upload-zone input { display: none; }

.voice-card { background: var(--surface2); border-radius: 10px; padding: 16px; border: 1px solid var(--border); display: flex; align-items: center; gap: 14px; }
.voice-card .voice-info { flex: 1; min-width: 0; }
.voice-card .voice-name { font-weight: 600; font-size: 1rem; }
.voice-card .voice-meta { font-size: 0.8rem; color: var(--text-muted); margin-top: 2px; }
.voice-card .voice-btns { display: flex; gap: 6px; flex-shrink: 0; }
.voice-grid { display: flex; flex-direction: column; gap: 10px; }

.engine-tab { padding: 6px 14px; border-radius: 6px; font-size: 0.8rem; cursor: pointer; background: var(--surface2); border: 1px solid var(--border); color: var(--text-muted); transition: all 0.2s; }
.engine-tab:hover { color: var(--text); }
.engine-tab.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* Step indicator */
.steps { display: flex; gap: 0; margin-bottom: 20px; }
.step { flex: 1; text-align: center; padding: 14px 8px; background: var(--surface); border: 1px solid var(--border); color: var(--text-muted); font-size: 0.85rem; cursor: pointer; transition: all 0.2s; position: relative; }
.step:first-child { border-radius: 10px 0 0 10px; }
.step:last-child { border-radius: 0 10px 10px 0; }
.step.active { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
.step.done { background: rgba(74,222,128,0.15); border-color: var(--success); color: var(--success); }
.step .step-num { display: inline-block; width: 24px; height: 24px; line-height: 24px; border-radius: 50%; background: var(--surface2); font-weight: 700; font-size: 0.8rem; margin-right: 6px; }
.step.active .step-num { background: rgba(255,255,255,0.2); }
.step.done .step-num { background: var(--success); color: #0f0f1a; }

/* Character preview grid */
.char-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 12px; }
.char-thumb { background: var(--surface2); border: 2px solid var(--border); border-radius: 12px; padding: 12px; text-align: center; cursor: pointer; transition: all 0.2s; }
.char-thumb:hover { border-color: var(--accent); }
.char-thumb.selected { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(124,92,255,0.3); }
.char-thumb img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 8px; margin-bottom: 8px; }
.char-thumb .char-name { font-size: 0.85rem; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Mouth shape grid */
.mouth-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 10px; }
.mouth-slot { background: var(--surface2); border: 1px solid var(--border); border-radius: 10px; padding: 10px; text-align: center; transition: border-color 0.2s; }
.mouth-slot.has-image { border-color: var(--success); }
.mouth-slot .mouth-label { font-size: 0.75rem; color: var(--accent-light); font-weight: 600; margin-bottom: 6px; text-transform: uppercase; }
.mouth-slot .mouth-desc { font-size: 0.7rem; color: var(--text-muted); margin-bottom: 8px; }
.mouth-slot .mouth-preview { width: 80px; height: 60px; margin: 0 auto 8px; background: var(--bg); border-radius: 6px; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.mouth-slot .mouth-preview img { max-width: 100%; max-height: 100%; }
.mouth-slot .mouth-upload-btn { font-size: 0.75rem; padding: 4px 10px; }

@media (max-width: 600px) {
    .container { padding: 12px; }
    .controls-row { flex-direction: column; align-items: stretch; }
    .input-row { flex-direction: column; }
    .nav-tab { padding: 10px 16px; font-size: 0.85rem; }
    .suite-btn { padding: 10px 14px; font-size: 0.85rem; }
    .steps { flex-direction: column; }
    .step:first-child { border-radius: 10px 10px 0 0; }
    .step:last-child { border-radius: 0 0 10px 10px; }
}