/* Custom CSS for Journal Statistics Dashboard */

/* CSS Variables for consistent theming */
:root {
    --primary-color: #4a90e2;
    --secondary-color: #38b2ac;
    --accent-color: #a29bfe;
    --success-color: #50c878;
    --warning-color: #fdcb6e;
    --danger-color: #e74c3c;
    --dark-color: #1a202c;
    --light-bg: #f7f9fc;
    --white: #ffffff;
    --text-primary: #2d3748;
    --text-secondary: #718096;
    --border-color: #e2e8f0;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
    --border-radius: 10px;
    --transition: all 0.2s ease;
}

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

body {
    background-color: var(--light-bg);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 16px;
}

.container {
    padding: 1.5rem 1rem;
    max-width: 1200px;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Navbar Styling */
.navbar {
    background: linear-gradient(135deg, var(--dark-color) 0%, #2d3748 100%);
    padding: 0.75rem 0;
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--white) !important;
    padding: 0.5rem 0;
    transition: var(--transition);
}

.navbar-brand:hover {
    color: var(--secondary-color) !important;
    transform: translateX(2px);
}

.navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 400;
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    position: relative;
    transition: var(--transition);
    border-radius: 6px;
    margin: 0 0.25rem;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--white) !important;
    background-color: rgba(56, 178, 172, 0.2);
    transform: translateY(-1px);
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 1rem;
    right: 1rem;
    height: 2px;
    background: linear-gradient(90deg, var(--secondary-color), var(--primary-color));
    border-radius: 1px;
}

.navbar-toggler {
    border: none;
    padding: 0.5rem;
    transition: var(--transition);
}

.navbar-toggler:hover {
    transform: scale(1.05);
}

.navbar-toggler-icon {
    width: 1.1em;
    height: 1.1em;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='rgba(255, 255, 255, 0.9)' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
}

/* Section Styling */
.section-container {
    padding: 3rem 0;
    position: relative;
}

.section-container:nth-child(even) {
    background-color: rgba(255, 255, 255, 0.5);
}

.section-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.section-container h2 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.section-divider {
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    margin: 0 auto;
    border-radius: 2px;
}

/* Card Styling */
.stat-card {
    border: none;
    border-radius: var(--border-radius);
    background: var(--white);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    overflow: hidden;
    height: 100%;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.stat-card .card-header {
    color: var(--white);
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    padding: 1rem;
    border: none;
    position: relative;
    overflow: hidden;
}

.stat-card .card-header::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;
}

.stat-card:hover .card-header::before {
    left: 100%;
}

.stat-card .card-body {
    text-align: center;
    padding: 1.5rem 1rem;
    position: relative;
}

.card-value {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.card-trend {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Color Schemes for Different Sections */
.users .stat-card .card-header {
    background: linear-gradient(135deg, var(--primary-color), #5ba0f2);
}

.editorial .stat-card .card-header {
    background: linear-gradient(135deg, var(--accent-color), #b8b3ff);
}

.publications_abstract .stat-card .card-header {
    background: linear-gradient(135deg, var(--secondary-color), #4cc5bd);
}

.scholar .stat-card .card-header {
    background: linear-gradient(135deg, #26a69a, #39c9bd);
}

/* Table Styling */
.table-responsive {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    background: var(--white);
}

.publication-table {
    margin: 0;
    background-color: var(--white);
    border: none;
}

.publication-table thead th {
    background: linear-gradient(135deg, var(--dark-color), #2d3748);
    color: var(--white);
    font-weight: 500;
    padding: 1rem 1.25rem;
    border: none;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.publication-table tbody tr {
    transition: var(--transition);
    border: none;
}

.publication-table tbody tr:hover {
    background-color: rgba(74, 144, 226, 0.05);
    transform: scale(1.01);
}

.publication-table tbody td {
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--border-color);
    vertical-align: middle;
}

.publication-table tbody tr:first-child td {
    border-top: none;
}

/* Badge Styling */
.badge {
    font-size: 0.8rem;
    padding: 0.5rem 0.75rem;
    border-radius: 20px;
    font-weight: 500;
}

/* Alert Styling */
.alert {
    border-radius: var(--border-radius);
    border: none;
    font-size: 0.9rem;
    box-shadow: var(--shadow-sm);
}

.alert-danger {
    background: linear-gradient(135deg, #fee, #fdd);
    color: var(--danger-color);
}

.alert-warning {
    background: linear-gradient(135deg, #fffbf0, #fef5e7);
    color: #d69e2e;
}

.alert-success {
    background: linear-gradient(135deg, #f0fff4, #e6fffa);
    color: var(--success-color);
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--dark-color), #2d3748);
    color: rgba(255, 255, 255, 0.8);
    padding: 2rem 0;
    margin-top: 3rem;
}

.footer p {
    margin: 0;
    font-size: 0.9rem;
}

/* Loading Animation */
.loading {
    text-align: center;
    padding: 3rem;
}

.loading-spinner {
    font-size: 2rem;
    color: var(--primary-color);
    animation: spin 1s linear infinite;
}

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

/* Fade in animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-container {
    animation: fadeInUp 0.6s ease-out;
}

/* Responsive Design */
@media (max-width: 992px) {
    .section-container h2 {
        font-size: 1.75rem;
    }
    
    .card-value {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .section-container {
        padding: 2rem 0;
    }
    
    .section-container h2 {
        font-size: 1.5rem;
    }
    
    .card-value {
        font-size: 2.2rem;
    }
    
    .navbar-nav .nav-link {
        margin: 0.25rem 0;
        font-size: 0.9rem;
        padding: 0.5rem;
        text-align: center;
    }
    
    .navbar-brand {
        font-size: 1rem;
    }
    
    .stat-card .card-body {
        padding: 1.25rem 1rem;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 1rem 0.75rem;
    }
    
    .stat-card .card-header {
        font-size: 0.9rem;
        padding: 0.75rem;
    }
    
    .stat-card .card-body {
        padding: 1rem 0.75rem;
    }
    
    .card-value {
        font-size: 2rem;
    }
    
    .publication-table thead th,
    .publication-table tbody td {
        padding: 0.75rem;
        font-size: 0.85rem;
    }
}

/* Print styles */
@media print {
    .navbar,
    .footer {
        display: none;
    }
    
    .section-container {
        page-break-inside: avoid;
        padding: 1rem 0;
    }
    
    .stat-card {
        box-shadow: none;
        border: 1px solid var(--border-color);
    }
}

/* Dark mode support (if needed in future) */
@media (prefers-color-scheme: dark) {
    /* Dark mode styles can be added here */
}

/* Accessibility improvements */
.stat-card:focus-within {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.nav-link:focus {
    outline: 2px solid var(--secondary-color);
    outline-offset: 2px;
}

/* Smooth transitions for reduced motion users */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}