:root {
    --coral: #FF6B35;
    --coral-light: #FF8A5C;
    --dark: #1A1A2E;
    --darker: #0F0F1A;
    --card: #16213E;
    --card-light: #1E2A4A;
    --text: #FFFFFF;
    --text-secondary: #A0AEC0;
    --text-muted: #718096;
    --success: #48BB78;
    --warning: #ECC94B;
    --danger: #F56565;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--darker);
    color: var(--text);
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
}

.hidden { display: none !important; }

/* ─── Login ──────────────────────────────────────────────── */
.login-view {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.login-card {
    background: var(--card);
    padding: 40px;
    border-radius: 16px;
    text-align: center;
    max-width: 380px;
}
.login-emoji {
    font-size: 56px;
    margin-bottom: 12px;
}
.login-card h2 {
    color: var(--coral);
    margin-bottom: 10px;
    font-size: 1.5em;
}
.login-card p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-size: 0.9em;
    line-height: 1.5;
}
.btn-hf {
    background: #FFD21E;
    color: #000;
    border: none;
    padding: 12px 28px;
    border-radius: 8px;
    font-size: 0.95em;
    font-weight: 700;
    cursor: pointer;
}

/* ─── Header ─────────────────────────────────────────────── */
.header {
    background: rgba(0,0,0,0.4);
    backdrop-filter: blur(10px);
    padding: 8px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255,107,53,0.2);
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}
.logo-emoji { font-size: 24px; }
.logo-text {
    font-weight: 700;
    font-size: 1em;
    color: var(--coral);
}
.logo-text span {
    color: var(--text-secondary);
    font-weight: 400;
    font-size: 0.85em;
}
.user-section {
    display: flex;
    align-items: center;
    gap: 8px;
}
.user-badge {
    background: var(--card);
    padding: 4px 12px;
    border-radius: 16px;
    font-size: 0.8em;
}
.btn-logout {
    background: transparent;
    border: 1px solid var(--text-muted);
    color: var(--text-secondary);
    padding: 4px 12px;
    border-radius: 12px;
    cursor: pointer;
    font-size: 0.75em;
}

/* ─── Main layout ────────────────────────────────────────── */
.app-container {
    display: flex;
    flex-direction: column;
    padding: 8px;
    gap: 8px;
    max-width: 800px;
    margin: 0 auto;
}

/* ─── Panels ─────────────────────────────────────────────── */
.panel {
    background: var(--card);
    border-radius: 12px;
    overflow: hidden;
}
.panel-header {
    padding: 10px 14px;
    background: rgba(0,0,0,0.2);
    font-weight: 600;
    font-size: 0.85em;
    color: var(--coral);
}
.panel-content {
    padding: 12px;
}
.hint {
    color: var(--text-muted);
    font-size: 0.85em;
}

/* ─── Connect row ────────────────────────────────────────── */
.connection-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}
.status-line {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9em;
}
.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
}
.status-indicator.connected {
    background: var(--success);
    box-shadow: 0 0 8px var(--success);
}
.status-indicator.connecting {
    background: var(--warning);
    animation: blink 0.8s infinite;
}
@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* ─── Buttons ────────────────────────────────────────────── */
.btn {
    padding: 12px 18px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9em;
    cursor: pointer;
    transition: opacity 0.15s;
    min-height: 44px;
}
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-primary { background: var(--coral); color: white; }
.btn-secondary { background: rgba(255,255,255,0.15); color: white; }
.btn-danger { background: var(--danger); color: white; }
.btn-add {
    background: transparent;
    border: 1px dashed var(--text-muted);
    color: var(--text-secondary);
    padding: 6px 12px;
    margin-top: 8px;
    width: 100%;
}
.btn-add:hover {
    border-color: var(--coral);
    color: var(--coral);
}
.full-width {
    width: 100%;
    margin-top: 12px;
}

/* ─── Robot picker ───────────────────────────────────────── */
.robot-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.robot-card {
    padding: 10px 14px;
    background: var(--darker);
    border: 2px solid transparent;
    border-radius: 8px;
    cursor: pointer;
}
.robot-card:hover { background: var(--card-light); }
.robot-card.selected { border-color: var(--coral); }
.robot-card .name {
    font-weight: 600;
    font-size: 0.9em;
}
.robot-card .id {
    font-size: 0.75em;
    color: var(--text-muted);
    font-family: monospace;
}

/* ─── Video / mimicry view ───────────────────────────────── */
.video-pair {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
    width: 100%;
}
.video-cell {
    position: relative;
    background: #000;
    border-radius: 10px;
    overflow: hidden;
    aspect-ratio: 4/3;
}
.video-cell video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    background: linear-gradient(135deg, #0a0a15 0%, #1a1a2e 100%);
}
.overlay-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}
.cell-label {
    position: absolute;
    top: 6px;
    left: 6px;
    background: rgba(0,0,0,0.55);
    color: var(--text-secondary);
    padding: 3px 9px;
    border-radius: 12px;
    font-size: 0.72em;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}
.status-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    padding: 8px 4px;
}
.status-row .btn { margin-left: auto; }
.connection-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--card);
    padding: 6px 12px;
    border-radius: 16px;
    font-size: 0.8em;
}
.robot-name {
    background: var(--card);
    padding: 6px 12px;
    border-radius: 16px;
    font-size: 0.8em;
    font-weight: 500;
}

/* When mirror mode is on, flip both videos AND the overlay canvas as
   a unit so they stay aligned. Face landmarks are read from the
   un-flipped frame; this is purely visual. */
.mirror-preview .video-cell video,
.mirror-preview .video-cell .overlay-canvas {
    transform: scaleX(-1);
}

/* ─── Master row ─────────────────────────────────────────── */
.master-row {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    align-items: center;
}
.toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.9em;
}
.toggle input {
    width: 22px;
    height: 22px;
    accent-color: var(--coral);
    cursor: pointer;
}

/* ─── Sliders (head amplitudes + rule weights) ───────────── */
.slider-row {
    display: grid;
    grid-template-columns: 110px 1fr 60px;
    gap: 12px;
    align-items: center;
    margin-bottom: 10px;
}
.slider-row:last-child { margin-bottom: 0; }
.slider-label {
    font-size: 0.85em;
    color: var(--text-secondary);
}
.slider {
    width: 100%;
    height: 8px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--darker);
    border-radius: 4px;
    outline: none;
}
.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 22px;
    height: 22px;
    background: var(--coral);
    border-radius: 50%;
    cursor: pointer;
}
.slider::-moz-range-thumb {
    width: 22px;
    height: 22px;
    background: var(--coral);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}
.slider-value {
    font-family: monospace;
    font-size: 0.85em;
    color: var(--coral);
    text-align: right;
}

/* ─── Blendshape monitor ─────────────────────────────────── */
.bs-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px 16px;
    max-height: 360px;
    overflow-y: auto;
}
@media (max-width: 600px) {
    .bs-grid { grid-template-columns: 1fr; max-height: 260px; }
}
.bs-row {
    display: grid;
    grid-template-columns: 110px 1fr 38px;
    gap: 6px;
    align-items: center;
    font-size: 0.72em;
}
.bs-row .bs-label {
    color: var(--text-secondary);
    font-family: monospace;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.bs-row .bs-bar {
    height: 8px;
    background: var(--darker);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}
.bs-row .bs-fill {
    position: absolute;
    inset: 0 auto 0 0;
    width: 0%;
    background: linear-gradient(90deg, var(--coral) 0%, var(--coral-light) 100%);
    transition: width 0.06s linear;
}
.bs-row .bs-val {
    color: var(--coral);
    font-family: monospace;
    text-align: right;
}
.bs-row.dim .bs-label { opacity: 0.45; }
.bs-row.dim .bs-val { opacity: 0.45; color: var(--text-muted); }

/* ─── Free-routing rule rows ─────────────────────────────── */
.rules-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.rule-row {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 8px;
    align-items: center;
    padding: 8px;
    background: var(--darker);
    border-radius: 8px;
}
.rule-row select {
    background: var(--card-light);
    color: var(--text);
    border: 1px solid var(--card-light);
    border-radius: 6px;
    padding: 6px 8px;
    font-size: 0.85em;
}
.rule-row .weight-block {
    display: grid;
    grid-template-columns: 110px 50px;
    gap: 6px;
    align-items: center;
}
.rule-row .live-readout {
    font-family: monospace;
    font-size: 0.75em;
    color: var(--text-muted);
    min-width: 70px;
    text-align: right;
}
.rule-row .btn-remove {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.1em;
    padding: 4px 8px;
}
.rule-row .btn-remove:hover { color: var(--danger); }

@media (max-width: 600px) {
    .rule-row {
        grid-template-columns: 1fr auto;
        grid-template-rows: auto auto;
    }
    .rule-row select { grid-column: 1 / -1; }
    .rule-row .btn-remove { grid-column: 2; grid-row: 1; }
    .rule-row .weight-block { grid-column: 1; grid-row: 2; }
}

/* ─── Desktop layout ─────────────────────────────────────── */
@media (min-width: 900px) {
    .app-container {
        max-width: 1100px;
    }
    #mimicryView {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }
    #mimicryView .video-pair      { grid-column: 1 / -1; grid-row: 1; }
    /* Panel #1 = blendshape monitor — keep it directly under the video,
       full-width and prominent; this is the hero view for the demo. */
    #mimicryView > .panel:nth-of-type(1) { grid-column: 1 / -1; grid-row: 2; }
    #mimicryView .status-row      { grid-column: 1 / -1; grid-row: 3; }
    /* Panel #2 = master/mirror/reset, #3 = head amps */
    #mimicryView > .panel:nth-of-type(2) { grid-column: 1; grid-row: 4; }
    #mimicryView > .panel:nth-of-type(3) { grid-column: 2; grid-row: 4; }
    /* Rule panels: body yaw, left antenna, right antenna across row 5 */
    #mimicryView > .panel:nth-of-type(4) { grid-column: 1; grid-row: 5; }
    #mimicryView > .panel:nth-of-type(5) { grid-column: 2; grid-row: 5; }
    #mimicryView > .panel:nth-of-type(6) { grid-column: 1 / -1; grid-row: 6; }
}