/* Base Styles */
:root {
    /* Colors - Clean White Theme */
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #06b6d4;
    
    /* Grayscale - Clean & Light */
    --dark-color: #1e293b;
    --gray-dark: #334155;
    --gray-color: #64748b;
    --gray-light: #e2e8f0;
    --light-color: #f8fafc;
    --white-color: #ffffff;
    --border-color: #e2e8f0;
    
    /* Extended Gray Scale for CSS compatibility */
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;
    
    /* Color aliases for consistency */
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-info: #06b6d4;
    
    /* Typography - Use Poppins globally for consistency */
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Poppins', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.1);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-secondary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--white-color);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    color: var(--dark-color);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

ul, ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

img {
    max-width: 100%;
    height: auto;
}

/* Layout */
.container-fluid {
    display: flex;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    padding: var(--spacing-lg);
    margin-left: 250px; /* Account for fixed sidebar */
    transition: margin-left var(--transition-normal), width var(--transition-normal);
    min-height: 100vh;
    width: calc(100% - 250px); /* Ensure content doesn't overflow */
}

.sidebar.collapsed ~ .main-content {
    margin-left: 70px;
    width: calc(100% - 70px);
}

/* Sidebar */
.sidebar {
    width: 250px;
    background: var(--white-color);
    box-shadow: var(--shadow-md);
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 1000;
    transition: transform var(--transition-normal), width var(--transition-normal);
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar.collapsed {
    width: 70px;
}

.sidebar.collapsed .logo span,
.sidebar.collapsed .menu-title,
.sidebar.collapsed .sidebar-menu a span:not(.badge),
.sidebar.collapsed .user-details {
    display: none;
}

.sidebar.collapsed .logo {
    justify-content: center;
}

.sidebar.collapsed .sidebar-menu a {
    justify-content: center;
    padding: var(--spacing-md);
}

.sidebar.collapsed .sidebar-toggle i::before {
    content: "\f0c9"; /* fa-bars */
}

.sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-toggle {
    background: transparent;
    border: none;
    color: var(--gray-color);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    display: none;
}

.sidebar-toggle:hover {
    background: var(--light-color);
    color: var(--primary-color);
}

@media (min-width: 993px) {
    .sidebar-toggle {
        display: block;
    }
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo i {
    font-size: 2rem;
}

.sidebar-menu {
    list-style: none;
    padding: var(--spacing-md) 0;
}

.sidebar-menu li {
    margin-bottom: var(--spacing-xs);
}

.sidebar-menu a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--gray-dark);
    transition: all var(--transition-fast);
    white-space: nowrap;
    text-decoration: none;
    border-left: 3px solid transparent;
}

.sidebar-menu a span {
    flex: 1;
}

.sidebar-menu a:hover {
    background-color: var(--gray-light);
    color: var(--primary-color);
    padding-left: calc(var(--spacing-lg) + 0.5rem);
}

.sidebar-menu a.active {
    background-color: var(--primary-color);
    color: var(--white-color);
}

.menu-title {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 0.875rem;
    text-transform: uppercase;
    color: var(--gray-color);
    font-weight: 600;
    letter-spacing: 1px;
}

.divider {
    height: 1px;
    background-color: var(--gray-light);
    margin: var(--spacing-md) 0;
}

.sidebar-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-md);
    border-top: 1px solid var(--gray-light);
    background-color: var(--white-color);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    overflow: hidden;
    background: var(--light-color);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.user-avatar svg {
    width: 100%;
    height: 100%;
    padding: 8px;
    box-sizing: border-box;
}

.user-details {
    flex: 1;
}

.user-name {
    display: block;
    font-weight: 600;
    font-size: 0.875rem;
}

.user-role {
    display: block;
    font-size: 0.75rem;
    color: var(--gray-color);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    position: fixed;
    top: var(--spacing-md);
    left: var(--spacing-md);
    z-index: 1001;
    background-color: var(--primary-color);
    color: var(--white-color);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    cursor: pointer;
    box-shadow: var(--shadow-md);
}

/* Cards */
.card {
    background-color: var(--white-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
    transition: box-shadow var(--transition-fast);
}

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

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

.card-header h3 {
    margin-bottom: 0;
}

.card-body {
    padding: var(--spacing-lg);
}

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--gray-light);
}

.table th {
    font-weight: 600;
    background-color: var(--gray-light);
}

.table tbody tr:hover {
    background-color: var(--light-color);
}

.table-responsive {
    overflow-x: auto;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn i {
    font-size: 1.125rem;
}

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

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

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

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

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

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

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

.btn-block {
    display: block;
    width: 100%;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.875rem;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--gray-dark);
}

.form-control,
.form-select,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
input[type="date"],
input[type="time"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--gray-color);
    border-radius: var(--radius-md);
    font-family: var(--font-secondary);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-control:focus,
.form-select:focus,
input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2343495e' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 16px 12px;
    padding-right: 3rem;
}

/* Alerts */
.alert {
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.alert i {
    font-size: 1.25rem;
    margin-top: 0.125rem;
}

.alert-success {
    background-color: rgba(46, 204, 113, 0.1);
    border-left: 4px solid var(--success-color);
    color: #27ae60;
}

.alert-danger {
    background-color: rgba(231, 76, 60, 0.1);
    border-left: 4px solid var(--danger-color);
    color: #c0392b;
}

.alert-warning {
    background-color: rgba(243, 156, 18, 0.1);
    border-left: 4px solid var(--warning-color);
    color: #d35400;
}

.alert-info {
    background-color: rgba(52, 152, 219, 0.1);
    border-left: 4px solid var(--info-color);
    color: #2980b9;
}

/* Badges & Status */
.status-badge,
.badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
}

.status-badge.success,
.badge.success {
    background-color: rgba(46, 204, 113, 0.1);
    color: var(--success-color);
}

.status-badge.warning,
.badge.warning {
    background-color: rgba(243, 156, 18, 0.1);
    color: var(--warning-color);
}

.status-badge.danger,
.badge.danger {
    background-color: rgba(231, 76, 60, 0.1);
    color: var(--danger-color);
}

.status-badge.info,
.badge.info {
    background-color: rgba(52, 152, 219, 0.1);
    color: var(--info-color);
}

.status-badge.primary,
.badge.primary {
    background-color: rgba(67, 97, 238, 0.1);
    color: var(--primary-color);
}

/* Stats Cards */
.stats-grid,
.employee-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.stat-card {
    background-color: var(--white-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-icon.primary {
    background-color: rgba(67, 97, 238, 0.1);
    color: var(--primary-color);
}

.stat-icon.success {
    background-color: rgba(46, 204, 113, 0.1);
    color: var(--success-color);
}

.stat-icon.warning {
    background-color: rgba(243, 156, 18, 0.1);
    color: var(--warning-color);
}

.stat-icon.danger {
    background-color: rgba(231, 76, 60, 0.1);
    color: var(--danger-color);
}

.stat-icon.info {
    background-color: rgba(52, 152, 219, 0.1);
    color: var(--info-color);
}

.stat-info h3 {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
    color: var(--dark-color);
}

.stat-info p {
    margin-bottom: 0;
    color: var(--gray-color);
}

/* Dashboard */
.dashboard-header {
    margin-bottom: var(--spacing-xl);
}

.dashboard-header h1 {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.current-date {
    color: var(--gray-color);
    font-size: 1.125rem;
}

/* Employee Cells */
.employee-cell {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.employee-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.employee-photo {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: var(--spacing-xs);
}

.btn-action {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--gray-light);
    color: var(--gray-dark);
    transition: all var(--transition-fast);
}

.btn-action:hover {
    color: var(--white-color);
}

.btn-edit:hover {
    background-color: var(--info-color);
}

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

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

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: var(--white-color);
    border-radius: var(--radius-lg);
    max-width: 800px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalFadeIn 0.3s ease;
}

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

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

.close-modal {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray-color);
    transition: color var(--transition-fast);
}

.close-modal:hover {
    color: var(--danger-color);
}

.modal-body {
    padding: var(--spacing-lg);
}

.modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--gray-light);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
}

/* Video Container */
.video-container {
    position: relative;
    width: 100%;
    max-width: 640px;
    margin: 0 auto var(--spacing-lg);
}

#video, #overlay, #registrationVideo, #registrationCanvas {
    width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

#overlay, #registrationCanvas {
    position: absolute;
    top: 0;
    left: 0;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.text-success { color: var(--success-color); }
.text-warning { color: var(--warning-color); }
.text-danger { color: var(--danger-color); }
.text-info { color: var(--info-color); }
.text-primary { color: var(--primary-color); }
.text-muted { color: var(--gray-color); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }
.mt-5 { margin-top: var(--spacing-xxl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }
.mb-5 { margin-bottom: var(--spacing-xxl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }
.p-4 { padding: var(--spacing-xl); }
.p-5 { padding: var(--spacing-xxl); }

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.flex-wrap { flex-wrap: wrap; }

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--gray-color);
}

.empty-state i {
    margin-bottom: var(--spacing-md);
    color: var(--gray-light);
}

.empty-state h3 {
    color: var(--gray-color);
    margin-bottom: var(--spacing-sm);
}

/* Row & Grid */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 calc(var(--spacing-md) * -1);
}

.col-md-1, .col-md-2, .col-md-3, .col-md-4,
.col-md-5, .col-md-6, .col-md-7, .col-md-8,
.col-md-9, .col-md-10, .col-md-11, .col-md-12 {
    padding: 0 var(--spacing-md);
}

.col-md-1 { width: 8.33%; }
.col-md-2 { width: 16.66%; }
.col-md-3 { width: 25%; }
.col-md-4 { width: 33.33%; }
.col-md-5 { width: 41.66%; }
.col-md-6 { width: 50%; }
.col-md-7 { width: 58.33%; }
.col-md-8 { width: 66.66%; }
.col-md-9 { width: 75%; }
.col-md-10 { width: 83.33%; }
.col-md-11 { width: 91.66%; }
.col-md-12 { width: 100%; }