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

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #8b5cf6;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --bg-input: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --border-color: #334155;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, var(--bg-dark) 0%, #1e1b4b 100%);
    min-height: 100vh;
    color: var(--text-primary);
}

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

.login-box {
    background: var(--bg-card);
    border-radius: 20px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    padding: 48px;
    width: 100%;
    max-width: 450px;
    border: 1px solid var(--border-color);
}

.logo {
    text-align: center;
    margin-bottom: 32px;
}

.logo-icon {
    font-size: 72px;
    margin-bottom: 16px;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.logo h1 {
    color: var(--text-primary);
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.logo p {
    color: var(--text-secondary);
    font-size: 14px;
}

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

.form-group label {
    display: block;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 16px;
    color: var(--text-primary);
    transition: all 0.3s ease;
    outline: none;
}

.form-group input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.form-group input::placeholder {
    color: #64748b;
}

.login-btn {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 12px;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5);
}

.login-btn:active {
    transform: translateY(0);
}

.error-message {
    color: var(--danger-color);
    text-align: center;
    margin-top: 16px;
    font-size: 14px;
    min-height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.error-message::before {
    content: '⚠️';
    margin-right: 8px;
}

.demo-info {
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.demo-info p {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 4px;
}

.dashboard-container {
    min-height: 100vh;
    display: flex;
}

.sidebar {
    width: 280px;
    background: var(--bg-card);
    border-right: 1px solid var(--border-color);
    padding: 24px;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-header {
    display: flex;
    align-items: center;
    margin-bottom: 40px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header .logo-icon {
    font-size: 40px;
    margin-right: 12px;
    animation: none;
}

.sidebar-header h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.sidebar-menu {
    list-style: none;
}

.sidebar-menu li {
    margin-bottom: 6px;
}

.sidebar-menu li a {
    display: flex;
    align-items: center;
    padding: 14px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 10px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.sidebar-menu li a:hover {
    background: rgba(99, 102, 241, 0.1);
    color: var(--text-primary);
}

.sidebar-menu li a.active {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(139, 92, 246, 0.2) 100%);
    color: var(--primary-light);
    border-left: 3px solid var(--primary-color);
}

.sidebar-menu li a i {
    margin-right: 12px;
    font-size: 20px;
}

.main-content {
    margin-left: 280px;
    flex: 1;
    padding: 28px;
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 28px;
}

.top-bar h1 {
    color: var(--text-primary);
    font-size: 32px;
    font-weight: 700;
}

.user-info {
    display: flex;
    align-items: center;
    background: var(--bg-card);
    padding: 10px 20px;
    border-radius: 30px;
    border: 1px solid var(--border-color);
}

.user-info span {
    color: var(--text-primary);
    margin-right: 12px;
    font-weight: 500;
}

.user-info button {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--danger-color);
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.user-info button:hover {
    background: rgba(239, 68, 68, 0.2);
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 28px;
}

.card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 28px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: rgba(99, 102, 241, 0.3);
}

.card-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 28px;
    margin-bottom: 20px;
}

.card-icon.locked {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.2) 0%, rgba(239, 68, 68, 0.1) 100%);
    color: var(--danger-color);
}

.card-icon.unlocked {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2) 0%, rgba(16, 185, 129, 0.1) 100%);
    color: var(--success-color);
}

.card-icon.total {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(99, 102, 241, 0.1) 100%);
    color: var(--primary-light);
}

.card-icon.logs {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.2) 0%, rgba(139, 92, 246, 0.1) 100%);
    color: #a78bfa;
}

.card h3 {
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card p {
    color: var(--text-primary);
    font-size: 36px;
    font-weight: 700;
    line-height: 1.2;
}

.room-section {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 28px;
    border: 1px solid var(--border-color);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.section-header h2 {
    color: var(--text-primary);
    font-size: 22px;
    font-weight: 600;
}

.search-box {
    position: relative;
}

.search-box input {
    padding: 12px 16px 12px 44px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 14px;
    width: 280px;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

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

.search-box input::placeholder {
    color: #64748b;
}

.search-box i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

.room-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.room-card {
    background: rgba(30, 41, 59, 0.5);
    border: 2px solid var(--border-color);
    border-radius: 14px;
    padding: 24px;
    transition: all 0.3s ease;
}

.room-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.15);
    transform: translateY(-2px);
}

.room-card.locked {
    border-color: rgba(239, 68, 68, 0.3);
}

.room-card.unlocked {
    border-color: rgba(16, 185, 129, 0.3);
}

.room-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.room-header h3 {
    color: var(--text-primary);
    font-size: 20px;
    font-weight: 600;
}

.status-badge {
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.status-badge.locked {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger-color);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.status-badge.unlocked {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success-color);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.room-info {
    margin-bottom: 20px;
}

.room-info p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
}

.room-info p:last-child {
    margin-bottom: 0;
}

.room-info p::before {
    content: '📍';
    margin-right: 8px;
    font-size: 12px;
}

.room-actions {
    display: flex;
    gap: 10px;
}

.room-actions button {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.btn-unlock {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2) 0%, rgba(16, 185, 129, 0.1) 100%);
    color: var(--success-color);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.btn-unlock:hover {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.3) 0%, rgba(16, 185, 129, 0.2) 100%);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(16, 185, 129, 0.3);
}

.btn-lock {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.2) 0%, rgba(239, 68, 68, 0.1) 100%);
    color: var(--danger-color);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.btn-lock:hover {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.3) 0%, rgba(239, 68, 68, 0.2) 100%);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(239, 68, 68, 0.3);
}

.btn-face {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(139, 92, 246, 0.2) 100%);
    color: var(--primary-light);
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.btn-face:hover {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.3) 0%, rgba(139, 92, 246, 0.3) 100%);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(99, 102, 241, 0.3);
}

.logs-table {
    width: 100%;
    border-collapse: collapse;
}

.logs-table th,
.logs-table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.logs-table th {
    background: rgba(30, 41, 59, 0.5);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.logs-table td {
    color: var(--text-primary);
    font-size: 14px;
}

.logs-table tr:hover {
    background: rgba(99, 102, 241, 0.05);
}

.logs-table .action-badge {
    padding: 5px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
}

.logs-table .action-badge.unlock {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success-color);
}

.logs-table .action-badge.lock {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger-color);
}

.logs-table .action-badge.face_upload {
    background: rgba(99, 102, 241, 0.15);
    color: var(--primary-light);
}

.logs-table .action-badge.face_delete {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger-color);
}

.logs-table .success-badge {
    padding: 5px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
}

.logs-table .success-badge.true {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success-color);
}

.logs-table .success-badge.false {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger-color);
}

.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 32px;
    width: 90%;
    max-width: 550px;
    position: relative;
    border: 1px solid var(--border-color);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.modal-header h3 {
    color: var(--text-primary);
    font-size: 22px;
    font-weight: 600;
}

.modal-close {
    background: rgba(148, 163, 184, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 20px;
    cursor: pointer;
    color: var(--text-secondary);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
    border-color: rgba(239, 68, 68, 0.3);
}

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

.modal-form label {
    display: block;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 8px;
}

.modal-form input,
.modal-form select {
    width: 100%;
    padding: 12px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 15px;
    color: var(--text-primary);
    transition: all 0.3s ease;
    outline: none;
}

.modal-form input:focus,
.modal-form select:focus {
    border-color: var(--primary-color);
}

.modal-form input::placeholder,
.modal-form select::placeholder {
    color: #64748b;
}

.modal-form textarea {
    width: 100%;
    padding: 12px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 15px;
    color: var(--text-primary);
    min-height: 120px;
    resize: vertical;
    transition: all 0.3s ease;
    outline: none;
}

.modal-form textarea:focus {
    border-color: var(--primary-color);
}

.modal-actions {
    display: flex;
    gap: 12px;
    margin-top: 28px;
}

.modal-actions button {
    flex: 1;
    padding: 14px;
    border: none;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.modal-actions .btn-cancel {
    background: var(--bg-input);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.modal-actions .btn-cancel:hover {
    background: rgba(148, 163, 184, 0.2);
}

.modal-actions .btn-submit {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.modal-actions .btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5);
}

.toast {
    position: fixed;
    bottom: 32px;
    right: 32px;
    padding: 18px 28px;
    border-radius: 12px;
    color: white;
    font-weight: 600;
    font-size: 14px;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 2000;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast.success {
    background: linear-gradient(135deg, var(--success-color) 0%, #059669 100%);
}

.toast.error {
    background: linear-gradient(135deg, var(--danger-color) 0%, #dc2626 100%);
}

@media (max-width: 768px) {
    .dashboard-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        position: relative;
        height: auto;
    }
    
    .main-content {
        margin-left: 0;
        padding: 16px;
    }
    
    .top-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    
    .room-grid {
        grid-template-columns: 1fr;
    }
    
    .search-box input {
        width: 100%;
    }
}