/* 
==============================================
    Enhanced Admin Dashboard UI Styles for University System
    Author: AI Assistant
    Version: 1.0
==============================================
*/

:root {
    /* Primary Colors */
    --primary-color: #4e54c8;
    --primary-color-light: #8f94fb;
    --primary-color-dark: #363795;
    
    /* Secondary Colors */
    --secondary-color: #ff7350;
    --secondary-color-light: #ff9d7d;
    --secondary-color-dark: #e65a37;
    
    /* Accent Colors */
    --accent-color-1: #00c9a7;
    --accent-color-2: #ffc107;
    --accent-color-3: #6c63ff;
    
    /* Neutral Colors */
    --light-color: #ffffff;
    --dark-color: #141b22;
    --gray-color-100: #f8f9fa;
    --gray-color-200: #e9ecef;
    --gray-color-300: #dee2e6;
    --gray-color-400: #ced4da;
    --gray-color-500: #adb5bd;
    --gray-color-600: #6c757d;
    --gray-color-700: #495057;
    --gray-color-800: #343a40;
    --gray-color-900: #212529;
    
    /* Shadows */
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow-md: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    
    /* Border Radius */
    --border-radius-sm: 0.25rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 1rem;
    --border-radius-xl: 2rem;
    --border-radius-circle: 50%;
    
    /* Transitions */
    --transition-fast: 0.3s ease;
    --transition-normal: 0.5s ease;
    --transition-slow: 0.8s ease;
}

/* ===== Welcome Banner ===== */
.welcome-banner {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-color-light) 100%);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.welcome-banner::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: translate(50%, -50%);
}

.welcome-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--light-color);
}

.welcome-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.welcome-subtitle {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.welcome-stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.2);
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-md);
    backdrop-filter: blur(10px);
}

.stat-item i {
    font-size: 1.2rem;
}

/* ===== Enhanced Stats Cards ===== */
.enhanced-stats-card {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    overflow: hidden;
    position: relative;
}

.enhanced-stats-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color-1), var(--accent-color-2), var(--accent-color-3));
}

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

.enhanced-stats-card .card-block {
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stats-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--border-radius-circle);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-color-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--light-color);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.stats-content {
    flex: 1;
}

.stats-label {
    color: var(--gray-color-600);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.stats-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.stats-trend {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.8rem;
    font-weight: 600;
}

.stats-trend.positive {
    color: #28a745;
}

.stats-trend.negative {
    color: #dc3545;
}

/* ===== Quick Actions Section ===== */
.quick-actions-card {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.quick-actions-card .card-header {
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-color-light));
    color: var(--light-color);
    border: none;
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
    padding: 1.5rem;
}

.quick-actions-card .card-title {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
}

.quick-actions-card .card-title i {
    margin-left: 0.5rem;
}

.quick-actions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    padding: 1rem;
}

.quick-action-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.5rem;
    background: var(--light-color);
    border-radius: var(--border-radius-md);
    text-decoration: none;
    color: var(--gray-color-700);
    transition: var(--transition-fast);
    border: 2px solid transparent;
}

.quick-action-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.action-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--border-radius-circle);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-color-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--light-color);
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.quick-action-item span {
    text-align: center;
    font-weight: 500;
}

/* ===== Enhanced Chart Cards ===== */
.enhanced-chart-card {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.enhanced-chart-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.enhanced-chart-card .card-header {
    background: linear-gradient(135deg, var(--accent-color-1), var(--accent-color-2));
    color: var(--light-color);
    border: none;
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
    padding: 1.25rem 1.5rem;
}

.enhanced-chart-card .card-title {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
}

.enhanced-chart-card .card-title i {
    margin-left: 0.5rem;
}

/* ===== Recent Activity Section ===== */
.recent-activity-card {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.recent-activity-card .card-header {
    background: linear-gradient(135deg, var(--accent-color-3), var(--primary-color));
    color: var(--light-color);
    border: none;
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
    padding: 1.5rem;
}

.recent-activity-card .card-title {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
}

.recent-activity-card .card-title i {
    margin-left: 0.5rem;
}

.activity-timeline {
    padding: 1rem;
}

.activity-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--gray-color-200);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-circle);
    background: linear-gradient(135deg, var(--accent-color-1), var(--accent-color-2));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--light-color);
    font-size: 1rem;
    flex-shrink: 0;
}

.activity-content {
    flex: 1;
}

.activity-content h6 {
    margin: 0 0 0.25rem 0;
    color: var(--dark-color);
    font-weight: 600;
}

.activity-content p {
    margin: 0 0 0.25rem 0;
    color: var(--gray-color-600);
    font-size: 0.9rem;
}

.activity-time {
    color: var(--gray-color-500);
    font-size: 0.8rem;
    font-style: italic;
}

/* ===== Animation Classes ===== */
.animate-on-load {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.animate-on-load.animate-fadeIn {
    opacity: 1;
    transform: translateY(0);
}

.stats-card {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.stats-card.animate-slideInUp {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .welcome-title {
        font-size: 2rem;
    }
    
    .welcome-subtitle {
        font-size: 1rem;
    }
    
    .welcome-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .quick-actions-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .enhanced-stats-card .card-block {
        flex-direction: column;
        text-align: center;
    }
    
    .stats-icon {
        margin: 0 auto 1rem auto;
    }
}

@media (max-width: 576px) {
    .welcome-banner {
        padding: 1.5rem;
    }
    
    .welcome-title {
        font-size: 1.75rem;
    }
    
    .quick-actions-grid {
        grid-template-columns: 1fr;
    }
}