:root {
    --bg-dark: #0B0F19;
    --card-bg: rgba(17, 24, 39, 0.7);
    --border-color: rgba(255, 255, 255, 0.1);
    --accent-primary: #6366F1;
    --accent-purple: #A855F7;
    --accent-pink: #EC4899;
    --text-primary: #F9FAFB;
    --text-secondary: #9CA3AF;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --mic-red: #EF4444;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    background-image:
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(168, 85, 247, 0.15) 0px, transparent 50%);
}

.app-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* ── Glassmorphism ─────────────────────────────────────────────────────── */
.glass {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

.glass-inner {
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
}

/* ── Navbar ───────────────────────────────────────────────────────────── */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 24px;
    flex-wrap: wrap;
    gap: 12px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-text h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.brand-text h1 span {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.badge {
    font-size: 0.62rem;
    font-family: 'JetBrains Mono', monospace;
    background: rgba(99, 102, 241, 0.2);
    color: var(--accent-primary);
    border: 1px solid rgba(99, 102, 241, 0.4);
    padding: 2px 8px;
    border-radius: 12px;
}

.nav-controls {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

/* Provider badges */
.provider-badges {
    display: flex;
    gap: 6px;
}

.provider-badge {
    font-size: 0.65rem;
    font-family: 'JetBrains Mono', monospace;
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.3);
    padding: 3px 8px;
    border-radius: 10px;
}

/* Backend Selector */
.backend-selector {
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    padding: 4px 10px;
    border-radius: 16px;
    font-size: 0.78rem;
}

.backend-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.backend-input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--accent-primary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    width: 150px;
}

.backend-input:focus {
    color: white;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    background: rgba(255, 255, 255, 0.05);
    padding: 6px 14px;
    border-radius: 20px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--text-secondary);
    transition: all 0.3s ease;
}

.status-dot.active {
    background-color: var(--success);
    box-shadow: 0 0 10px var(--success);
    animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
    0%, 100% { box-shadow: 0 0 6px var(--success); }
    50%       { box-shadow: 0 0 16px var(--success); }
}

/* ── Buttons ──────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: 10px;
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    outline: none;
    user-select: none;
}

.btn-lg {
    padding: 12px 20px;
    font-size: 0.95rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-purple));
    color: white;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning), #F97316);
    color: #000;
    font-weight: 600;
}

.btn-warning:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(245, 158, 11, 0.4);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger), #DC2626);
    color: white;
}

.btn-danger:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(239, 68, 68, 0.4);
}

/* ── Mic Button ───────────────────────────────────────────────────────── */
.btn-mic {
    background: linear-gradient(135deg, #1F2937, #374151);
    color: var(--text-primary);
    border: 1px solid rgba(239, 68, 68, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-mic:hover:not(:disabled) {
    border-color: var(--mic-red);
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.3);
}

.btn-mic.recording {
    background: linear-gradient(135deg, #7F1D1D, #991B1B);
    border-color: var(--mic-red);
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.6);
    animation: mic-pulse 1s infinite;
}

@keyframes mic-pulse {
    0%   { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7); }
    70%  { box-shadow: 0 0 0 12px rgba(239, 68, 68, 0); }
    100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

.btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* ── Layout ───────────────────────────────────────────────────────────── */
.main-layout {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 20px;
}

@media (max-width: 960px) {
    .main-layout { grid-template-columns: 1fr; }
}

.voice-studio, .transcript-panel {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.studio-header, .panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.studio-header h2, .panel-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.session-timer {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.1rem;
    color: var(--accent-primary);
}

/* ── Waveform Visualizer ──────────────────────────────────────────────── */
.visualizer-container {
    position: relative;
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

#waveCanvas {
    width: 100%;
    height: 140px;
    display: block;
}

.visualizer-overlay {
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-secondary);
    font-size: 0.8rem;
    pointer-events: none;
    white-space: nowrap;
    background: rgba(11, 15, 25, 0.7);
    padding: 3px 12px;
    border-radius: 20px;
}

/* ── Agent State Bar ──────────────────────────────────────────────────── */
.agent-state-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 8px 16px;
    font-size: 0.85rem;
}

.state-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
}

.state-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-secondary);
    transition: all 0.3s ease;
}

.state-dot.state-idle     { background: var(--text-secondary); }
.state-dot.state-listening { background: var(--mic-red); animation: mic-pulse 1s infinite; }
.state-dot.state-thinking  { background: var(--warning); animation: pulse-dot 0.8s infinite; }
.state-dot.state-speaking  { background: var(--accent-primary); animation: pulse-dot 0.6s infinite; }
.state-dot.state-error     { background: var(--danger); }

.conv-state {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--success);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    padding: 2px 8px;
    border-radius: 8px;
}

/* ── Controls ─────────────────────────────────────────────────────────── */
.controls-panel {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.text-input-row {
    display: flex;
    gap: 10px;
}

.input-field {
    flex: 1;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 14px;
    color: white;
    outline: none;
    font-family: 'Outfit', sans-serif;
    font-size: 0.9rem;
    transition: border-color 0.2s;
}

.input-field:focus {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.05);
}

.input-field::placeholder { color: var(--text-secondary); }

.textarea-field {
    resize: vertical;
    min-height: 80px;
    font-size: 0.85rem;
}

/* ── Knowledge Panel ──────────────────────────────────────────────────── */
.knowledge-panel {
    margin-top: 4px;
}

.knowledge-panel summary {
    cursor: pointer;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 10px 14px;
    user-select: none;
    transition: color 0.2s;
}

.knowledge-panel summary:hover { color: var(--text-primary); }

.knowledge-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 10px 0 4px;
}

.ingest-status {
    font-size: 0.8rem;
    color: var(--text-secondary);
    min-height: 18px;
}

.ingest-status.success { color: var(--success); }
.ingest-status.error   { color: var(--danger); }

/* ── Transcript Panel ─────────────────────────────────────────────────── */
.panel-header {
    margin-bottom: 4px;
}

.count-badge {
    font-size: 0.75rem;
    background: rgba(99, 102, 241, 0.15);
    color: var(--accent-primary);
    border: 1px solid rgba(99, 102, 241, 0.3);
    padding: 3px 10px;
    border-radius: 12px;
}

.sub-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.transcript-stream {
    height: 420px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding-right: 6px;
    scroll-behavior: smooth;
}

.transcript-stream::-webkit-scrollbar { width: 4px; }
.transcript-stream::-webkit-scrollbar-track { background: transparent; }
.transcript-stream::-webkit-scrollbar-thumb { background: rgba(99, 102, 241, 0.3); border-radius: 4px; }

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-secondary);
    gap: 12px;
    text-align: center;
    opacity: 0.6;
}

.empty-state p { font-size: 0.9rem; }

.message-bubble {
    padding: 12px 16px;
    border-radius: 14px;
    max-width: 88%;
    font-size: 0.93rem;
    line-height: 1.55;
    animation: fadeIn 0.25s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

.message-user {
    align-self: flex-end;
    background: rgba(99, 102, 241, 0.18);
    border: 1px solid rgba(99, 102, 241, 0.35);
}

.message-assistant {
    align-self: flex-start;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
}

.agent-tag {
    font-size: 0.68rem;
    color: var(--accent-purple);
    font-weight: 600;
    margin-bottom: 5px;
    display: block;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.02em;
}

.system-notice {
    text-align: center;
    font-size: 0.78rem;
    color: var(--warning);
    margin: 2px 0;
    animation: fadeIn 0.2s ease;
}

/* ── Developer Panel ──────────────────────────────────────────────────── */
.dev-panel {
    padding: 20px 24px;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 12px;
}

.metric-card {
    background: rgba(0, 0, 0, 0.3);
    padding: 14px 12px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    transition: border-color 0.2s;
}

.metric-card:hover { border-color: rgba(99, 102, 241, 0.3); }

.metric-label {
    font-size: 0.72rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.metric-value {
    font-size: 1.15rem;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
    transition: color 0.3s;
}

.metric-value.accent { color: var(--accent-pink); }

/* ── Session Timeline ─────────────────────────────────────────────────── */
.timeline-section h4,
.eval-section h4 {
    font-size: 0.88rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.timeline {
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 10px;
    max-height: 180px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 4px;
    scroll-behavior: smooth;
}

.timeline::-webkit-scrollbar { width: 3px; }
.timeline::-webkit-scrollbar-thumb { background: rgba(99, 102, 241, 0.3); border-radius: 2px; }

.timeline-empty {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-align: center;
    padding: 12px 0;
}

.timeline-event {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    animation: fadeIn 0.2s ease;
}

.tl-time {
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-secondary);
    min-width: 36px;
}

.tl-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
}

.tl-green  { background: var(--success); }
.tl-blue   { background: #60A5FA; }
.tl-purple { background: var(--accent-purple); }
.tl-red    { background: var(--danger); }
.tl-orange { background: var(--warning); }
.tl-gray   { background: var(--text-secondary); }

.tl-label {
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ── Eval Results ─────────────────────────────────────────────────────── */
.eval-section {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.eval-results {
    background: rgba(0, 0, 0, 0.4);
    padding: 12px;
    border-radius: 8px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    white-space: pre-wrap;
    max-height: 140px;
    overflow-y: auto;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

/* ── Utility ──────────────────────────────────────────────────────────── */
.hidden { display: none !important; }