:root {
    --primary: #4f6ef7;
    --primary-dark: #7c3aed;
    --primary-gradient: linear-gradient(135deg, #4f6ef7, #7c3aed);
    --success: #48bb78;
    --danger: #f56565;
    --warning: #ed8936;
    --card-bg: rgba(255, 255, 255, 0.9);
    --card-border: rgba(255, 255, 255, 0.5);
    --text-primary: #1a2332;
    --text-secondary: #2d3748;
    --text-muted: #4a5568;
    --text-light: #718096;
    --bg-light: #f7fafc;
    --bg-input: #edf2f7;
    --radius: 16px;
    --radius-sm: 12px;
    --radius-xs: 8px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
    --shadow-hover: 0 8px 30px rgba(79, 110, 247, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #e8edf5 100%);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-input);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* Header */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    transition: var(--transition);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo i {
    font-size: 1.8rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-info {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.datetime {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.status-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: #f0f4ff;
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
    flex-shrink: 0;
}

.status-dot.online {
    background: var(--success);
    animation: pulse 2s infinite;
}

.status-dot.idle {
    background: var(--text-light);
}

.status-dot.listening {
    background: var(--danger);
    animation: pulse 1s infinite;
}

.status-dot.offline {
    background: var(--danger);
    animation: none;
}

@keyframes pulse {
    0% { 
        opacity: 1;
        transform: scale(1);
    }
    50% { 
        opacity: 0.5;
        transform: scale(0.8);
    }
    100% { 
        opacity: 1;
        transform: scale(1);
    }
}

/* Dashboard Main */
.dashboard {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

.section {
    margin-bottom: 2.5rem;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.section-header h2 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
}

.section-header h2 i {
    color: var(--primary);
    font-size: 1.4rem;
}

.section-subtitle {
    font-size: 0.85rem;
    color: var(--text-light);
    background: var(--bg-input);
    padding: 0.3rem 0.8rem;
    border-radius: 50px;
}

/* Grid Layouts */
.grid-lighting {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
}

.grid-monitoring {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
}

/* Cards */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--card-border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.card:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Loading State */
.card.loading {
    opacity: 0.6;
    pointer-events: none;
}

.card.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 200%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Device Card */
.device-card {
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.device-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-gradient);
    opacity: 0;
    transition: var(--transition);
}

.device-card.active::before {
    opacity: 1;
}

.device-card.error {
    border-color: var(--danger);
}

.device-card.error::before {
    background: linear-gradient(90deg, var(--danger), #ed64a6);
    opacity: 1;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.card-icon {
    font-size: 1.2rem;
    color: var(--primary);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f0f4ff;
    border-radius: 10px;
    flex-shrink: 0;
    transition: var(--transition);
}

.device-card:hover .card-icon {
    transform: scale(1.05) rotate(-5deg);
}

.device-name {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.card-body {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.status-text {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-light);
    transition: color 0.3s ease;
}

.device-card.active .status-text {
    color: var(--success);
}

/* Toggle Switch */
.toggle-switch {
    position: relative;
    width: 48px;
    height: 26px;
    flex-shrink: 0;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
    position: absolute;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #e2e8f0;
    border-radius: 26px;
    transition: var(--transition);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    height: 20px;
    width: 20px;
    left: 3px;
    bottom: 3px;
    background: white;
    border-radius: 50%;
    transition: var(--transition);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.toggle-switch input:checked + .toggle-slider {
    background: var(--primary-gradient);
}

.toggle-switch input:checked + .toggle-slider::before {
    transform: translateX(22px);
}

.toggle-switch input:focus-visible + .toggle-slider {
    box-shadow: 0 0 0 3px rgba(79, 110, 247, 0.3);
}

/* Monitoring Cards */
.monitoring-card {
    padding: 1.5rem;
}

.monitoring-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.monitoring-icon {
    font-size: 1.3rem;
    color: var(--primary);
}

.monitoring-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.monitoring-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.metric {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.5rem;
    border-radius: var(--radius-xs);
    transition: var(--transition);
}

.metric:hover {
    background: var(--bg-light);
}

.metric-label {
    font-size: 0.75rem;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.metric-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Environment Display */
.env-display {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 1rem;
}

.env-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-light);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.env-item:hover {
    transform: scale(1.02);
    background: #f0f4ff;
}

.env-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-input);
    border-radius: var(--radius-sm);
    color: var(--primary);
    font-size: 1.2rem;
    flex-shrink: 0;
    transition: var(--transition);
}

.env-item:hover .env-icon {
    transform: rotate(-10deg) scale(1.05);
}

.env-info {
    display: flex;
    flex-direction: column;
    flex: 1;
}

.env-label {
    font-size: 0.75rem;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.env-value {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Voice Control */
.voice-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--card-border);
    transition: var(--transition);
}

.voice-card:hover {
    box-shadow: var(--shadow-hover);
}

.voice-control {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.voice-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.8rem 2rem;
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.voice-btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transition: width 0.6s, height 0.6s, top 0.6s, left 0.6s;
}

.voice-btn:active::after {
    width: 300px;
    height: 300px;
    top: -100px;
    left: -100px;
}

.voice-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 110, 247, 0.3);
}

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

.voice-btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.voice-btn.listening {
    background: linear-gradient(135deg, var(--danger), #ed64a6);
    animation: pulse 1.5s infinite;
}

.voice-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.voice-commands {
    margin-top: 1rem;
    padding-top: 1.5rem;
    border-top: 1px solid #e2e8f0;
}

.voice-commands h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.voice-commands ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 0.5rem;
}

.voice-commands li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    padding: 0.4rem 0.8rem;
    background: var(--bg-light);
    border-radius: var(--radius-xs);
    transition: var(--transition);
}

.voice-commands li:hover {
    background: #f0f4ff;
    transform: translateX(4px);
}

.voice-commands li i {
    color: var(--primary);
    font-size: 0.9rem;
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
    :root {
        --card-bg: rgba(26, 35, 50, 0.9);
        --card-border: rgba(255, 255, 255, 0.1);
        --text-primary: #e2e8f0;
        --text-secondary: #cbd5e0;
        --text-muted: #a0aec0;
        --text-light: #718096;
        --bg-light: rgba(255, 255, 255, 0.05);
        --bg-input: rgba(255, 255, 255, 0.08);
        --shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        --shadow-hover: 0 8px 30px rgba(79, 110, 247, 0.15);
    }

    body {
        background: linear-gradient(135deg, #0f1419 0%, #1a2332 100%);
    }

    .header {
        background: rgba(15, 20, 25, 0.95);
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .status-badge {
        background: rgba(255, 255, 255, 0.05);
        color: var(--text-secondary);
    }

    .card-icon {
        background: rgba(255, 255, 255, 0.05);
    }

    .env-item {
        background: rgba(255, 255, 255, 0.03);
    }

    .env-item:hover {
        background: rgba(255, 255, 255, 0.08);
    }

    .env-icon {
        background: rgba(255, 255, 255, 0.05);
    }

    .voice-commands li {
        background: rgba(255, 255, 255, 0.03);
    }

    .voice-commands li:hover {
        background: rgba(255, 255, 255, 0.08);
    }

    .voice-commands {
        border-top-color: rgba(255, 255, 255, 0.05);
    }

    .toggle-slider {
        background: #4a5568;
    }

    .datetime {
        color: var(--text-light);
    }
}

/* Responsive */
@media (max-width: 1024px) {
    .grid-monitoring {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .header {
        padding: 0.8rem 1rem;
    }
    
    .logo h1 {
        font-size: 1.1rem;
    }
    
    .header-info .datetime {
        display: none;
    }
    
    .dashboard {
        padding: 1rem;
    }
    
    .grid-lighting {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 1rem;
    }
    
    .monitoring-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .env-display {
        grid-template-columns: 1fr;
    }
    
    .voice-control {
        flex-direction: column;
        align-items: stretch;
    }
    
    .voice-commands ul {
        grid-template-columns: 1fr;
    }

    .toggle-switch {
        width: 56px;
        height: 30px;
    }
    
    .toggle-slider::before {
        height: 24px;
        width: 24px;
    }
    
    .toggle-switch input:checked + .toggle-slider::before {
        transform: translateX(26px);
    }

    .voice-btn {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .grid-lighting {
        grid-template-columns: 1fr 1fr;
        gap: 0.75rem;
    }
    
    .card {
        padding: 1rem;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .monitoring-grid {
        grid-template-columns: 1fr 1fr;
        gap: 0.5rem;
    }

    .metric-value {
        font-size: 0.95rem;
    }

    .voice-btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }

    .env-item {
        padding: 0.75rem;
    }

    .env-value {
        font-size: 1rem;
    }

    .status-badge {
        font-size: 0.75rem;
        padding: 0.3rem 0.6rem;
    }
}

/* Print Styles */
@media print {
    .header {
        position: static;
        background: white;
        box-shadow: none;
    }

    .card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #e2e8f0;
    }

    .voice-btn {
        display: none;
    }

    .toggle-switch {
        opacity: 0.5;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .card:hover {
        transform: none !important;
    }

    .voice-btn:hover {
        transform: none !important;
    }

    .env-item:hover {
        transform: none !important;
    }
}