/* Professional VMS Admin Dashboard - Light Theme */

:root {
    /* Modern Color Palette */
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --primary-light: #dbeafe;
    --secondary-color: #6b7280;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #06b6d4;
    
    /* Modern Theme Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --bg-accent: #fafaff;
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    --text-light: #d1d5db;
    --border-color: #e5e7eb;
    --border-light: #f3f4f6;
    --border-focus: #3b82f6;
    
    /* Improved Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;
    
    /* Modern Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Enhanced Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Smooth Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 15px;
    line-height: 1.6;
    font-weight: 400;
    letter-spacing: -0.01em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

h1 { 
    font-size: 32px;
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
    letter-spacing: -0.03em;
}

h2 { 
    font-size: 24px;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

h3 { 
    font-size: 20px;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

h4 { 
    font-size: 18px;
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

h5 { 
    font-size: 16px;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 15px;
    line-height: 1.6;
}

.text-sm {
    font-size: 14px;
}

.text-xs {
    font-size: 13px;
}

.lead {
    font-size: 18px;
    font-weight: 400;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Layout Components */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Modern Header */
.header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-xs);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.header-left {
    display: flex;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    font-weight: 700;
    font-size: 18px;
    box-shadow: var(--shadow-sm);
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

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

.user-menu {
    position: relative;
}

.user-menu-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 14px;
    color: var(--text-primary);
    transition: all 0.2s ease;
    font-family: inherit;
}

.user-menu-toggle:hover {
    background: var(--bg-secondary);
    border-color: var(--primary-color);
}

.user-menu-toggle .user-icon {
    width: 18px;
    height: 18px;
    color: #6b7280;
}

.user-menu-toggle .chevron-icon {
    width: 14px;
    height: 14px;
    color: #9ca3af;
    transition: transform 0.2s ease;
    margin-left: 4px;
}

.user-menu-toggle.active .chevron-icon {
    transform: rotate(180deg);
}

.user-menu-toggle:hover .user-icon,
.user-menu-toggle:hover .chevron-icon {
    color: var(--primary-color);
}

.user-name {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 14px;
}

.user-dropdown {
    position: absolute;
    top: calc(100% + 4px);
    right: 0;
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    min-width: 220px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
    padding: 4px;
}

.user-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.user-dropdown a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    color: #374151;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.15s ease;
    border-radius: 6px;
}

.user-dropdown a:hover {
    background: #f3f4f6;
    color: #111827;
}

.user-dropdown .menu-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    color: #6b7280;
}

.user-dropdown a:hover .menu-icon {
    color: #4b5563;
}

.dropdown-divider {
    height: 1px;
    background: #e5e7eb;
    margin: 4px 8px;
}

/* Password Requirements */
.password-requirements {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 12px;
    margin-top: 8px;
    font-size: 13px;
}

.requirement {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
    color: var(--text-secondary);
}

.requirement:last-child {
    margin-bottom: 0;
}

.requirement.met {
    color: var(--success-color);
}

.requirement-icon {
    display: inline-block;
    width: 14px;
    font-size: 12px;
}

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

/* Content Area */
.content {
    flex: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-3xl) var(--spacing-xl);
    width: 100%;
}

/* Hero Section */
.hero {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--spacing-3xl);
    align-items: center;
    margin-bottom: var(--spacing-3xl);
    padding: var(--spacing-xl) 0;
}

.hero-content {
    max-width: 600px;
}

.hero-stats {
    min-width: 300px;
}

/* Management Sections */
.management-section {
    margin-bottom: var(--spacing-3xl);
}

.section-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--border-light);
}

.section-info h2 {
    margin-bottom: var(--spacing-sm);
}

.section-info p {
    margin: 0;
    color: var(--text-muted);
}

.section-content {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

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


/* Stat Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.stat-card {
    background: linear-gradient(135deg, var(--bg-primary), var(--bg-accent));
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

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

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.stat-label {
    font-size: 13px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
    letter-spacing: -0.02em;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 12px 20px;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    background: var(--bg-primary);
    color: var(--text-primary);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
    letter-spacing: -0.01em;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
}

.btn-secondary {
    background: var(--bg-primary);
    border-color: var(--border-color);
    color: var(--text-secondary);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-secondary);
}

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

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

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 13px;
}

.btn-icon {
    padding: var(--spacing-sm);
}

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

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-textarea {
    min-height: 80px;
    resize: vertical;
}

/* Tables */
.table-container {
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
}

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

thead {
    background: var(--bg-secondary);
}

th {
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
    font-weight: 600;
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
}

td {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
    color: var(--text-primary);
}

tbody tr:hover {
    background: var(--bg-secondary);
}

tbody tr:last-child td {
    border-bottom: none;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
}

.badge-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.badge-info {
    background: rgba(59, 130, 246, 0.1);
    color: var(--info-color);
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

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

.modal {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

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

.modal-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--spacing-xs);
}

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

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

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

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

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: var(--success-color);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: var(--danger-color);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.2);
    color: var(--warning-color);
}

.alert-info {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    color: var(--info-color);
}

/* Loading States */
.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(59, 130, 246, 0.2);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-tertiary) 25%,
        var(--bg-secondary) 50%,
        var(--bg-tertiary) 75%
    );
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: var(--radius-md);
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Empty States */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-muted);
}

.empty-state-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-lg);
    opacity: 0.5;
}

.empty-state-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.empty-state-text {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-small { font-size: 12px; }
.text-primary { color: var(--primary-color); }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }

.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); }

.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); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }
.gap-3 { gap: var(--spacing-lg); }

/* Responsive Design */
@media (max-width: 1024px) {
    .hero {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
        text-align: center;
    }
    
    .hero-stats {
        min-width: auto;
    }
    
    .content {
        padding: var(--spacing-xl) var(--spacing-lg);
    }
}

@media (max-width: 768px) {
    .header-content {
        padding: 0 var(--spacing-lg);
        height: 64px;
    }
    
    .logo-text {
        display: none;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .section-header {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-lg);
    }
    
    .section-content {
        padding: var(--spacing-lg);
    }
    
    .content {
        padding: var(--spacing-lg);
    }
    
    .hero {
        padding: 0;
        margin-bottom: var(--spacing-xl);
    }
    
    .management-section {
        margin-bottom: var(--spacing-xl);
    }
    
    .user-menu-toggle {
        padding: 6px 10px;
    }
    
    .user-menu-toggle .user-name {
        display: none;
    }
    
    .user-dropdown {
        right: -16px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 28px;
    }
    
    .stats-grid {
        gap: var(--spacing-sm);
    }
    
    .stat-card {
        padding: var(--spacing-lg);
    }
    
    .stat-value {
        font-size: 24px;
    }
}