:root {
    --bg-main: #0c0f17;
    --bg-card: #151a24;
    --bg-card-subtle: #1c2331;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-focus: #3b82f6;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --text-dim: #6b7280;
    --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-sm: 6px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: var(--font-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 16px;
    line-height: 1.5;
}

.app-container {
    width: 100%;
    max-width: 540px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
}

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

.brand-icon {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.brand-icon svg {
    width: 20px;
    height: 20px;
}

.brand-text h1 {
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.badge-online {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--warning);
}

.badge-online.connected {
    color: var(--success);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.room-pill {
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    display: flex;
    gap: 6px;
    align-items: center;
    font-family: var(--font-mono);
}

.room-pill span {
    color: var(--text-muted);
    font-size: 0.65rem;
    font-weight: 700;
}

.room-pill strong {
    color: var(--primary);
}

.btn-icon-danger {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--danger);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-icon-danger:hover {
    background: var(--danger);
    color: #fff;
}

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

/* Card */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.login-card .card-header {
    margin-bottom: 24px;
    text-align: center;
}

.login-card h2 {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.login-card p {
    color: var(--text-muted);
    font-size: 0.88rem;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 14px;
    width: 18px;
    height: 18px;
    color: var(--text-dim);
}

.input-wrapper input {
    width: 100%;
    padding: 12px 14px 12px 42px;
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-main);
    font-family: var(--font-main);
    font-size: 0.95rem;
    outline: none;
    transition: border 0.2s, box-shadow 0.2s;
}

.input-wrapper input:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.btn-primary {
    width: 100%;
    padding: 13px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: background 0.2s, transform 0.1s;
}

.btn-primary:hover {
    background: var(--primary-hover);
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-primary svg {
    width: 18px;
    height: 18px;
}

.card-footer-tip {
    margin-top: 20px;
    padding: 12px 14px;
    background: rgba(59, 130, 246, 0.08);
    border: 1px dashed rgba(59, 130, 246, 0.25);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 10px;
    color: #93c5fd;
    font-size: 0.8rem;
}

.card-footer-tip svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

/* Status Ribbon */
.status-ribbon {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 10px 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.78rem;
    flex-wrap: wrap;
    gap: 8px;
}

.status-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.status-label {
    color: var(--text-muted);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-dim);
}

.status-dot.green {
    background: var(--success);
    box-shadow: 0 0 8px var(--success);
}

/* Controls Card */
.controls-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.user-self-profile {
    display: flex;
    align-items: center;
    gap: 14px;
}

.avatar-container {
    position: relative;
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    overflow: visible;
}

.avatar-container img {
    width: 100%;
    height: 100%;
    border-radius: var(--radius-md);
    object-fit: cover;
    background: #000;
}

.speaking-ring {
    position: absolute;
    inset: -3px;
    border: 2px solid transparent;
    border-radius: calc(var(--radius-md) + 3px);
    transition: all 0.15s ease-out;
}

.speaking-ring.active {
    border-color: var(--success);
    box-shadow: 0 0 12px rgba(16, 185, 129, 0.6);
}

.user-info h3 {
    font-size: 1.1rem;
    font-weight: 700;
}

.status-subtitle {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.quick-toggles {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.control-btn {
    padding: 12px;
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-main);
    font-family: var(--font-main);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s;
}

.control-btn:hover {
    background: rgba(255, 255, 255, 0.06);
}

.control-btn svg {
    width: 18px;
    height: 18px;
}

.control-btn.active-danger {
    background: rgba(239, 68, 68, 0.15);
    border-color: rgba(239, 68, 68, 0.4);
    color: var(--danger);
}

/* Sliders */
.slider-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.slider-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.78rem;
    color: var(--text-muted);
    font-weight: 600;
}

.custom-range {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    background: var(--bg-card-subtle);
    border-radius: 3px;
    outline: none;
}

.custom-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    box-shadow: 0 0 6px rgba(59, 130, 246, 0.6);
}

/* Players Section */
.players-section {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.section-header h4 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

.players-grid {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.player-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.player-card-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.player-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    position: relative;
}

.player-avatar img {
    width: 100%;
    height: 100%;
    border-radius: var(--radius-sm);
}

.player-avatar .speaking-indicator {
    position: absolute;
    inset: -2px;
    border: 2px solid transparent;
    border-radius: calc(var(--radius-sm) + 2px);
}

.player-avatar.speaking .speaking-indicator {
    border-color: var(--success);
    box-shadow: 0 0 8px var(--success);
}

.player-card-info h5 {
    font-size: 0.92rem;
    font-weight: 600;
}

.player-distance {
    font-size: 0.72rem;
    color: var(--text-dim);
    font-family: var(--font-mono);
}

.player-card-vol {
    width: 90px;
}