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

:root {
    --primary-blue: #2196F3;
    --primary-green: #4CAF50;
    --primary-amber: #FFC107;
    --primary-red: #F44336;
    --primary-purple: #9C27B0;
    --background: #f5f5f5;
    --surface: #ffffff;
    --text-primary: #212121;
    --text-secondary: #757575;
    --border: #e0e0e0;
    --shadow: rgba(0, 0, 0, 0.1);
    --nav-height: 70px;
    --header-height: 60px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    padding-bottom: var(--nav-height);
}

.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: linear-gradient(135deg, var(--primary-blue), #1976d2);
    color: white;
    z-index: 1000;
    box-shadow: 0 4px 16px rgba(33, 150, 243, 0.3);
    backdrop-filter: blur(10px);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1.5rem;
    height: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

.header-content h1 {
    font-size: 1.4rem;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.language-btn {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    padding: 0.6rem 1.2rem;
    border-radius: 25px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s;
    font-weight: 500;
    backdrop-filter: blur(10px);
}

.language-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.app-main {
    margin-top: var(--header-height);
    padding: 2rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    min-height: calc(100vh - var(--header-height) - var(--nav-height));
}

.content-section {
    display: none;
    animation: fadeIn 0.3s ease-in;
}

.content-section.active {
    display: block;
}

@keyframes fadeIn {
    from { 
        opacity: 0; 
        transform: translateY(20px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

/* Dashboard Styles */
.dashboard h2 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--surface);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 16px var(--shadow);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-green));
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--shadow);
}

.stat-card i {
    font-size: 2.5rem;
    color: var(--primary-blue);
    width: 60px;
    text-align: center;
    flex-shrink: 0;
}

.stat-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.stat-info span:first-child {
    font-size: 2rem;
    font-weight: bold;
    color: var(--text-primary);
    line-height: 1;
}

.stat-info span:last-child {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.quick-actions {
    background: var(--surface);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 16px var(--shadow);
    border: 1px solid var(--border);
    margin-bottom: 2rem;
}

.quick-actions h3 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-size: 1.3rem;
    font-weight: 600;
}

.action-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.action-btn {
    padding: 1.5rem;
    border: 2px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

.action-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.action-btn:hover::before {
    left: 100%;
}

.action-btn:hover {
    border-color: var(--primary-blue);
    background: rgba(33, 150, 243, 0.1);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--shadow);
}

.action-btn i {
    font-size: 1.2rem;
    color: var(--primary-blue);
}

/* Section Header */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border);
}

.section-header h2 {
    color: var(--text-primary);
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0;
}

.section-header .primary-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.primary-btn {
    background: linear-gradient(135deg, var(--primary-blue), #1976d2);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
    font-size: 1rem;
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.3);
    position: relative;
    overflow: hidden;
}

.primary-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.primary-btn:hover::before {
    left: 100%;
}

.primary-btn:hover {
    background: linear-gradient(135deg, #1976d2, #1565c0);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(33, 150, 243, 0.4);
}

.primary-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(33, 150, 243, 0.3);
}

.secondary-btn {
    background: var(--surface);
    color: var(--text-primary);
    border: 2px solid var(--border);
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

.secondary-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(33, 150, 243, 0.1), transparent);
    transition: left 0.5s;
}

.secondary-btn:hover::before {
    left: 100%;
}

.secondary-btn:hover {
    border-color: var(--primary-blue);
    background: rgba(33, 150, 243, 0.05);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.2);
}

/* Devices Section */
.device-filters {
    margin-bottom: 2rem;
    display: flex;
    justify-content: center;
}

.device-filters select {
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--border);
    border-radius: 25px;
    background: var(--surface);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    min-width: 150px;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6,9 12,15 18,9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1em;
    padding-right: 2.5rem;
}

.device-filters select:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

.device-filters select:hover {
    border-color: var(--primary-blue);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px var(--shadow);
}

.devices-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.device-card {
    background: var(--surface);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: 0 4px 16px var(--shadow);
    border: 1px solid var(--border);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.device-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-green));
}

.device-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--shadow);
}

.device-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
}

.device-info h3 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-size: 1.2rem;
    font-weight: 600;
}

.device-type {
    color: var(--primary-blue);
    font-weight: 500;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.25rem;
}

.device-room {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.device-status {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--primary-green);
    position: relative;
}

.status-indicator.offline {
    background: var(--text-secondary);
}

.status-indicator::after {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    border-radius: 50%;
    background: var(--primary-green);
    opacity: 0.3;
    animation: pulse 2s infinite;
}

.status-indicator.offline::after {
    background: var(--text-secondary);
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 0.3;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.1;
    }
    100% {
        transform: scale(1);
        opacity: 0.3;
    }
}

.device-status span {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.device-controls {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.control-btn {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.control-btn:hover {
    border-color: var(--primary-blue);
    background: rgba(33, 150, 243, 0.1);
    transform: translateY(-2px);
}

.control-btn.active {
    background: var(--primary-blue);
    color: white;
    border-color: var(--primary-blue);
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.3);
}

.delete-btn {
    padding: 0.75rem;
    border: 2px solid var(--primary-red);
    border-radius: 12px;
    background: var(--surface);
    color: var(--primary-red);
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.delete-btn:hover {
    background: var(--primary-red);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(244, 67, 54, 0.3);
}

/* Automation Section */
.automation-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.automation-card {
    background: var(--surface);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: 0 4px 16px var(--shadow);
    border: 1px solid var(--border);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
    margin-bottom: 1rem;
}

.automation-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-purple), var(--primary-amber));
}

.automation-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--shadow);
}

.automation-info h3 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-size: 1.2rem;
    font-weight: 600;
}

.automation-details {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.automation-info small {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.automation-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 1rem;
}

.toggle-switch {
    width: 50px;
    height: 26px;
    background: var(--border);
    border-radius: 13px;
    position: relative;
    cursor: pointer;
    transition: all 0.3s;
}

.toggle-switch::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 22px;
    height: 22px;
    background: white;
    border-radius: 50%;
    transition: all 0.3s;
    box-shadow: 0 2px 4px var(--shadow);
}

.toggle-switch.active {
    background: var(--primary-green);
}

.toggle-switch.active::before {
    transform: translateX(24px);
}

.automation-controls .delete-btn {
    padding: 0.5rem;
    border: 2px solid var(--primary-red);
    border-radius: 8px;
    background: var(--surface);
    color: var(--primary-red);
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.automation-controls .delete-btn:hover {
    background: var(--primary-red);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(244, 67, 54, 0.3);
}

/* Energy Section */
.time-filters {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 2rem;
    justify-content: center;
}

.time-filter {
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--border);
    border-radius: 25px;
    background: var(--surface);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 500;
    font-size: 0.9rem;
    min-width: 80px;
    text-align: center;
}

.time-filter:hover {
    background: var(--primary-blue);
    color: white;
    border-color: var(--primary-blue);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.3);
}

.time-filter.active {
    background: var(--primary-blue);
    color: white;
    border-color: var(--primary-blue);
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.3);
}

.energy-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.energy-card {
    background: var(--surface);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 16px var(--shadow);
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid var(--border);
}

.energy-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--shadow);
}

.energy-card h3 {
    margin-bottom: 1rem;
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.energy-value {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-blue);
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.5rem;
}

.energy-value span:first-child {
    font-size: 1.5rem;
    color: var(--text-secondary);
}

.chart-container {
    background: var(--surface);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 16px var(--shadow);
    margin-bottom: 2rem;
    border: 1px solid var(--border);
    position: relative;
}

.chart-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-green));
    border-radius: 16px 16px 0 0;
}

.chart-container canvas {
    width: 100% !important;
    height: 400px !important;
    max-width: none;
    border-radius: 8px;
    background: linear-gradient(135deg, rgba(33, 150, 243, 0.05), rgba(76, 175, 80, 0.05));
}

.consumption-list {
    background: var(--surface);
    border-radius: 16px;
    box-shadow: 0 4px 16px var(--shadow);
    overflow: hidden;
    border: 1px solid var(--border);
}

.consumption-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border);
    transition: all 0.3s;
}

.consumption-item:hover {
    background: rgba(33, 150, 243, 0.05);
}

.consumption-item:last-child {
    border-bottom: none;
}

.consumption-device {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.consumption-device i {
    font-size: 1.8rem;
    color: var(--primary-blue);
    width: 40px;
    text-align: center;
    background: rgba(33, 150, 243, 0.1);
    padding: 0.75rem;
    border-radius: 12px;
}

.device-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.device-location {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.consumption-value {
    text-align: right;
}

.consumption-kwh {
    font-weight: bold;
    color: var(--text-primary);
    font-size: 1.2rem;
    margin-bottom: 0.25rem;
}

.consumption-cost {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Security Section */
.security-status-card {
    background: var(--surface);
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: 0 4px 16px var(--shadow);
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 2rem;
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.security-status-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-green), var(--primary-amber));
}

.security-status-card .status-indicator {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: var(--primary-green);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    position: relative;
    box-shadow: 0 4px 16px rgba(76, 175, 80, 0.3);
}

.security-status-card .status-indicator.armed {
    background: var(--primary-amber);
    box-shadow: 0 4px 16px rgba(255, 193, 7, 0.3);
}

.security-status-card .status-indicator i {
    font-size: 2.5rem;
    color: white;
}

.status-info h3 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-size: 1.3rem;
    font-weight: 600;
}

.status-info p {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.status-info small {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.security-devices-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.security-device-card {
    background: var(--surface);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 2px 8px var(--shadow);
    border: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s;
}

.security-device-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px var(--shadow);
}

.security-device-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.security-device-info i {
    font-size: 1.5rem;
    color: var(--primary-blue);
    width: 40px;
    text-align: center;
    background: rgba(33, 150, 243, 0.1);
    padding: 0.5rem;
    border-radius: 8px;
}

.security-events {
    background: var(--surface);
    border-radius: 12px;
    box-shadow: 0 2px 8px var(--shadow);
    overflow: hidden;
    border: 1px solid var(--border);
}

.security-event {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
    transition: all 0.3s;
}

.security-event:hover {
    background: rgba(33, 150, 243, 0.05);
}

.security-event:last-child {
    border-bottom: none;
}

.event-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.event-type {
    font-weight: 500;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.event-description {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.event-time {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(4px);
    animation: fadeIn 0.3s ease-out;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: var(--surface);
    border-radius: 16px;
    box-shadow: 0 8px 32px var(--shadow);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid var(--border);
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    padding: 1.5rem 2rem 1rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    color: var(--text-primary);
    font-size: 1.3rem;
    font-weight: 600;
    margin: 0;
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    transition: all 0.3s;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-btn:hover {
    background: rgba(244, 67, 54, 0.1);
    color: var(--primary-red);
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9rem;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s;
    box-sizing: border-box;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    padding: 1rem 2rem 2rem;
    border-top: 1px solid var(--border);
    margin-top: 1rem;
}

.primary-btn {
    background: var(--primary-blue);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s;
    font-size: 1rem;
}

.primary-btn:hover {
    background: #1976d2;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.3);
}

.secondary-btn {
    background: var(--surface);
    color: var(--text-primary);
    border: 2px solid var(--border);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s;
    font-size: 1rem;
}

.secondary-btn:hover {
    border-color: var(--primary-blue);
    background: rgba(33, 150, 243, 0.1);
    transform: translateY(-2px);
}

/* FAQ Styles */
.faq-section {
    background: var(--surface);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 16px var(--shadow);
    border: 1px solid var(--border);
    margin-top: 2rem;
}

.faq-section h2 {
    margin-bottom: 2rem;
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
    text-align: center;
}

.faq-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s;
}

.faq-item:hover {
    box-shadow: 0 4px 12px var(--shadow);
    border-color: var(--primary-blue);
}

.faq-question {
    width: 100%;
    padding: 1.5rem;
    background: var(--surface);
    border: none;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    transition: all 0.3s;
}

.faq-question:hover {
    background: rgba(33, 150, 243, 0.05);
}

.faq-icon {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--primary-blue);
    transition: transform 0.3s;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(33, 150, 243, 0.1);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
    background: var(--primary-blue);
    color: white;
}

.faq-answer {
    padding: 0 1.5rem 1.5rem;
    color: var(--text-secondary);
    line-height: 1.6;
    animation: slideDown 0.3s ease-out;
    background: rgba(33, 150, 243, 0.02);
}

.faq-answer[hidden] {
    display: none;
}

@keyframes slideDown {
    from {
        opacity: 0;
        max-height: 0;
    }
    to {
        opacity: 1;
        max-height: 200px;
    }
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: var(--surface);
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-around;
    align-items: center;
    z-index: 1000;
    box-shadow: 0 -4px 16px var(--shadow);
    backdrop-filter: blur(10px);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--text-secondary);
    padding: 0.75rem;
    border-radius: 12px;
    transition: all 0.3s;
    min-width: 70px;
    text-align: center;
    position: relative;
}

.nav-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary-blue);
    border-radius: 12px;
    opacity: 0;
    transition: all 0.3s;
    z-index: -1;
}

.nav-item:hover {
    color: var(--primary-blue);
    transform: translateY(-2px);
}

.nav-item.active {
    color: white;
    background: var(--primary-blue);
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.3);
    transform: translateY(-2px);
}

.nav-item i {
    font-size: 1.3rem;
    margin-bottom: 0.25rem;
    transition: all 0.3s;
}

.nav-item.active i {
    transform: scale(1.1);
}

.nav-item span {
    font-size: 0.75rem;
    font-weight: 600;
    transition: all 0.3s;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 3rem;
    background: var(--surface);
    border-top: 1px solid var(--border);
    border-radius: 16px 16px 0 0;
    box-shadow: 0 -4px 16px var(--shadow);
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-green));
    border-radius: 0 0 3px 3px;
}

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

.text-center {
    text-align: center;
}

.text-success {
    color: var(--primary-green);
}

.text-warning {
    color: var(--primary-amber);
}

.text-error {
    color: var(--primary-red);
}

/* Responsive Design */
@media (max-width: 768px) {
    .app-main {
        padding: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 1rem;
    }
    
    .energy-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .devices-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .security-devices-list {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .action-buttons {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .section-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .section-header .primary-btn {
        justify-content: center;
    }
    
    .chart-container canvas {
        height: 300px !important;
    }
    
    .security-status-card {
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }
    
    .modal-content {
        width: 95%;
        margin: 1rem;
    }
    
    .form-actions {
        flex-direction: column;
        gap: 1rem;
    }
    
    .form-actions .primary-btn,
    .form-actions .secondary-btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .header-content h1 {
        font-size: 1.2rem;
    }
    
    .language-btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
    
    .nav-item {
        min-width: 60px;
        padding: 0.5rem;
    }
    
    .nav-item i {
        font-size: 1.1rem;
    }
    
    .nav-item span {
        font-size: 0.7rem;
    }
    
    .stat-card {
        padding: 1.5rem;
    }
    
    .stat-card i {
        font-size: 2rem;
        width: 50px;
    }
    
    .stat-info span:first-child {
        font-size: 1.5rem;
    }
    
    .energy-card {
        padding: 1.5rem;
    }
    
    .energy-value {
        font-size: 2rem;
    }
    
    .chart-container {
        padding: 1.5rem;
    }
    
    .chart-container canvas {
        height: 250px !important;
    }
}

/* Dark mode support (optional) */
@media (prefers-color-scheme: dark) {
    :root {
        --background: #121212;
        --surface: #1e1e1e;
        --text-primary: #ffffff;
        --text-secondary: #b0b0b0;
        --border: #333333;
        --shadow: rgba(0, 0, 0, 0.3);
    }
}