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

:root {
    --primary-color: #667eea;
    --primary-dark: #5568d3;
    --secondary-color: #764ba2;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --dark: #1e293b;
    --dark-light: #334155;
    --gray: #64748b;
    --gray-light: #cbd5e1;
    --gray-lighter: #f1f5f9;
    --white: #ffffff;
    --border-radius: 12px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--dark);
    line-height: 1.6;
}

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

.login-box {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 40px;
    width: 100%;
    max-width: 450px;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-box .logo {
    text-align: center;
    margin-bottom: 30px;
}

.login-box .logo i {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.login-box .logo h1 {
    font-size: 24px;
    color: var(--dark);
}

/* Dashboard Layout */
.dashboard {
    display: flex;
    min-height: 100vh;
    background: var(--gray-lighter);
}

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--dark);
    color: var(--white);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    transition: transform 0.3s ease;
    z-index: 1000;
}

.sidebar-header {
    padding: 25px 20px;
    background: var(--dark-light);
    display: flex;
    align-items: center;
    gap: 15px;
}

.sidebar-header i {
    font-size: 28px;
    color: var(--primary-color);
}

.sidebar-header h2 {
    font-size: 20px;
    font-weight: 600;
}

.sidebar-nav {
    flex: 1;
    padding: 20px 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 25px;
    color: var(--gray-light);
    text-decoration: none;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background: var(--dark-light);
    color: var(--white);
}

.nav-item.active {
    background: var(--dark-light);
    border-left-color: var(--primary-color);
    color: var(--white);
}

.nav-item i {
    font-size: 18px;
    width: 25px;
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid var(--dark-light);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    margin-bottom: 15px;
    background: var(--dark-light);
    border-radius: 8px;
}

.user-info i {
    font-size: 24px;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 280px;
    display: flex;
    flex-direction: column;
}

.top-bar {
    background: var(--white);
    padding: 15px 30px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--dark);
}

.search-bar {
    flex: 1;
    max-width: 400px;
    position: relative;
}

.search-bar i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray);
}

.search-bar input {
    width: 100%;
    padding: 10px 15px 10px 45px;
    border: 2px solid var(--gray-lighter);
    border-radius: 8px;
    font-size: 14px;
}

.search-bar input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.top-bar-actions {
    display: flex;
    gap: 10px;
    margin-left: auto;
}

.icon-btn {
    position: relative;
    background: var(--gray-lighter);
    border: none;
    padding: 10px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.icon-btn:hover {
    background: var(--gray-light);
    color: var(--white);
}

.icon-btn .badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--danger-color);
    color: var(--white);
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 10px;
}

/* Content Wrapper */
.content-wrapper {
    flex: 1;
    padding: 30px;
}

.page {
    display: none;
}

.page.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.page-header {
    margin-bottom: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.page-header h1 {
    font-size: 32px;
    color: var(--dark);
}

.page-header p {
    color: var(--gray);
    margin-top: 5px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--white);
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 20px;
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--white);
}

.stat-icon.bg-blue { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
.stat-icon.bg-green { background: linear-gradient(135deg, #10b981 0%, #059669 100%); }
.stat-icon.bg-purple { background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%); }
.stat-icon.bg-orange { background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%); }

.stat-info h3 {
    font-size: 32px;
    color: var(--dark);
    font-weight: 700;
}

.stat-info p {
    color: var(--gray);
    font-size: 14px;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 20px;
}

/* Card */
.card {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

.card-header {
    padding: 20px 25px;
    border-bottom: 1px solid var(--gray-lighter);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h3 {
    font-size: 18px;
    color: var(--dark);
}

.card-body {
    padding: 25px;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    background: var(--gray-light);
    color: var(--white);
}

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

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

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

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.btn-logout {
    width: 100%;
    background: var(--danger-color);
    color: var(--white);
    justify-content: center;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--gray-lighter);
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.form-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 25px;
}

/* File Upload */
.file-upload-wrapper {
    position: relative;
}

.file-upload-wrapper input[type="file"] {
    padding: 50px 15px;
    border: 2px dashed var(--gray-light);
    cursor: pointer;
}

.file-upload-preview {
    margin-top: 15px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.file-upload-preview img {
    max-width: 200px;
    max-height: 200px;
    border-radius: 8px;
    object-fit: cover;
}

/* Data Table */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table thead {
    background: var(--gray-lighter);
}

.data-table th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
    color: var(--dark);
}

.data-table td {
    padding: 15px;
    border-bottom: 1px solid var(--gray-lighter);
}

.data-table tbody tr:hover {
    background: var(--gray-lighter);
}

/* Status Badge */
.status-badge {
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    display: inline-block;
}

.status-badge.active {
    background: #d1fae5;
    color: var(--success-color);
}

.status-badge.inactive {
    background: #fee2e2;
    color: var(--danger-color);
}

/* Images Gallery */
.images-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.image-card {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.image-card:hover {
    transform: scale(1.05);
}

.image-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.image-card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    padding: 15px;
    color: var(--white);
}

.image-card-actions {
    position: absolute;
    top: 10px;
    right: 10px;
    display: flex;
    gap: 5px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.image-card:hover .image-card-actions {
    opacity: 1;
}

.image-card-actions button {
    background: rgba(255, 255, 255, 0.9);
    border: none;
    padding: 8px;
    border-radius: 6px;
    cursor: pointer;
}

/* Groups Grid */
.groups-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.group-card {
    background: var(--white);
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.group-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.group-card h3 {
    font-size: 20px;
    color: var(--dark);
}

.group-card p {
    color: var(--gray);
    margin-bottom: 15px;
}

.group-stats {
    display: flex;
    gap: 20px;
    padding: 15px 0;
    border-top: 1px solid var(--gray-lighter);
}

.group-stat {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--gray);
    font-size: 14px;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--white);
    border-radius: var(--border-radius);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease;
}

.modal-content.modal-large {
    max-width: 700px;
}

.modal-header {
    padding: 20px 25px;
    border-bottom: 1px solid var(--gray-lighter);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 20px;
    color: var(--dark);
}

.modal-close {
    background: none;
    border: none;
    font-size: 28px;
    cursor: pointer;
    color: var(--gray);
    line-height: 1;
}

.modal-body {
    padding: 25px;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3000;
}

.spinner {
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid var(--white);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 4000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    background: var(--white);
    padding: 15px 20px;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 300px;
    animation: slideInRight 0.3s ease;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast.success { border-left: 4px solid var(--success-color); }
.toast.error { border-left: 4px solid var(--danger-color); }
.toast.warning { border-left: 4px solid var(--warning-color); }
.toast.info { border-left: 4px solid var(--info-color); }

.toast i {
    font-size: 20px;
}

.toast.success i { color: var(--success-color); }
.toast.error i { color: var(--danger-color); }
.toast.warning i { color: var(--warning-color); }
.toast.info i { color: var(--info-color); }

/* Error Message */
.error-message {
    color: var(--danger-color);
    font-size: 14px;
    margin-top: 10px;
    display: none;
}

.error-message.show {
    display: block;
}

/* Device List */
.device-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.device-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px;
    background: var(--gray-lighter);
    border-radius: 8px;
}

.device-item-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.device-status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.device-status-dot.active {
    background: var(--success-color);
}

.device-status-dot.inactive {
    background: var(--gray);
}

/* Image Grid (Recent) */
.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 10px;
}

.image-grid img {
    width: 100%;
    height: 100px;
    object-fit: cover;
    border-radius: 8px;
}

/* Alert Box */
.alert {
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 15px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.alert i {
    font-size: 20px;
    margin-top: 2px;
}

.alert-info {
    background: #e0f2fe;
    color: #0369a1;
    border-left: 4px solid var(--info-color);
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border-left: 4px solid var(--success-color);
}

.alert-warning {
    background: #fef3c7;
    color: #92400e;
    border-left: 4px solid var(--warning-color);
}

/* Instant Display Button */
.btn-instant {
    background: var(--warning-color) !important;
    color: var(--white) !important;
}

.btn-instant:hover {
    background: #d97706 !important;
}

.image-card-actions .btn-instant {
    padding: 8px !important;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.mobile-open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .search-bar {
        display: none;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .groups-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

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