style.css

:root {
    --pollen-coral: #FF6B35;
    --pollen-coral-light: #FF8A5C;
    --pollen-coral-dark: #E55A2B;
    --pollen-dark: #1A1A2E;
    --pollen-darker: #0F0F1A;
    --pollen-card: #16213E;
    --pollen-card-light: #1E2A4A;
    --text-primary: #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(--pollen-darker);
    color: var(--text-primary);
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
}

/* 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 img {
    width: 32px;
    height: 32px;
    border-radius: 6px;
}

.logo-text {
    font-weight: 700;
    font-size: 1em;
    color: var(--pollen-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(--pollen-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 - Single Column */
.app-container {
    display: flex;
    flex-direction: column;
    padding: 8px;
    gap: 8px;
    max-width: 800px;
    margin: 0 auto;
}

/* Video Section */
.video-container {
    position: relative;
    background: #000;
    border-radius: 12px;
    overflow: hidden;
    aspect-ratio: 16/9;
    width: 100%;
}

video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    background: linear-gradient(135deg, #0a0a15 0%, #1a1a2e 100%);
}

.video-overlay-top {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    padding: 12px;
    background: linear-gradient(to bottom, rgba(0,0,0,0.7) 0%, transparent 100%);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.connection-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(0,0,0,0.5);
    padding: 6px 12px;
    border-radius: 16px;
    font-size: 0.8em;
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--danger);
}

.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; }
}

.robot-name {
    background: rgba(0,0,0,0.5);
    padding: 6px 12px;
    border-radius: 16px;
    font-size: 0.8em;
    font-weight: 500;
}

.video-overlay-bottom {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 12px;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 100%);
}

.video-controls {
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.85em;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--pollen-coral);
    color: white;
}

.btn-secondary {
    background: rgba(255,255,255,0.15);
    color: white;
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-mute {
    background: rgba(255,255,255,0.15);
    color: white;
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-mute.muted {
    background: var(--danger);
}

.btn-mute svg {
    width: 16px;
    height: 16px;
}

/* Panels */
.panel {
    background: var(--pollen-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(--pollen-coral);
}

.panel-content {
    padding: 12px;
}

/* Sliders */
.slider-row {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-bottom: 12px;
}

.slider-row:last-child {
    margin-bottom: 0;
}

.slider-label {
    font-size: 0.8em;
    color: var(--text-secondary);
    min-width: 80px;
}

.slider {
    flex: 1;
    height: 8px;
    -webkit-appearance: none;
    background: var(--pollen-darker);
    border-radius: 4px;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--pollen-coral);
    border-radius: 50%;
    cursor: pointer;
}

.slider-value {
    font-family: monospace;
    font-size: 0.8em;
    color: var(--pollen-coral);
    min-width: 45px;
    text-align: right;
}

/* Sound */
.sound-row {
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
}

.sound-input {
    flex: 1;
    padding: 8px 10px;
    background: var(--pollen-darker);
    border: 1px solid var(--pollen-card-light);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.85em;
}

.sound-presets {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 12px;
}

.preset-chip {
    padding: 4px 10px;
    background: var(--pollen-darker);
    border: 1px solid var(--pollen-card-light);
    border-radius: 12px;
    color: var(--text-secondary);
    font-size: 0.7em;
    cursor: pointer;
}

.preset-chip:hover {
    border-color: var(--pollen-coral);
    color: var(--pollen-coral);
}

/* Robot Selector */
.robot-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.robot-card {
    padding: 10px 14px;
    background: var(--pollen-darker);
    border: 2px solid transparent;
    border-radius: 8px;
    cursor: pointer;
}

.robot-card:hover {
    background: var(--pollen-card-light);
}

.robot-card.selected {
    border-color: var(--pollen-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;
}

/* Desktop Layout - Side by Side */
@media (min-width: 900px) {
    .app-container {
        display: grid;
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto auto auto auto;
        max-width: 1200px;
        gap: 12px;
    }

    .video-container {
        grid-column: 1;
        grid-row: 1 / 3;
    }

    #robotSelector {
        grid-column: 1;
        grid-row: 3;
    }

    .panel:nth-of-type(1) { /* Head Control */
        grid-column: 2;
        grid-row: 1;
    }

    .panel:nth-of-type(2) { /* Antennas */
        grid-column: 2;
        grid-row: 2;
    }

    .panel:nth-of-type(3) { /* Sound */
        grid-column: 2;
        grid-row: 3;
    }
}

/* Login View */
.login-view {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-card {
    background: var(--pollen-card);
    padding: 40px;
    border-radius: 16px;
    text-align: center;
    max-width: 380px;
}

.login-logo {
    width: 72px;
    height: 72px;
    margin-bottom: 20px;
    border-radius: 12px;
}

.login-card h2 {
    color: var(--pollen-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;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.hidden { display: none !important; }