/**
 * Institute Management Frontend Styles
 * Modern, responsive design with clean aesthetics
 */

/* ==========================================================================
   Variables & Base Styles
   ========================================================================== */

:root {
    --institute-primary: #2563eb;
    --institute-secondary: #7c3aed;
    --institute-accent: #06b6d4;
    --institute-success: #10b981;
    --institute-warning: #f59e0b;
    --institute-error: #ef4444;
    
    --institute-text-primary: #1f2937;
    --institute-text-secondary: #6b7280;
    --institute-text-muted: #9ca3af;
    
    --institute-bg-primary: #ffffff;
    --institute-bg-secondary: #f9fafb;
    --institute-bg-tertiary: #f3f4f6;
    
    --institute-border: #e5e7eb;
    --institute-border-light: #f3f4f6;
    
    --institute-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --institute-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --institute-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    --institute-radius: 8px;
    --institute-radius-lg: 12px;
    --institute-spacing: 1rem;
    --institute-spacing-sm: 0.5rem;
    --institute-spacing-lg: 2rem;
}

/* ==========================================================================
   Grid Layouts
   ========================================================================== */

.institute-students-wrapper,
.institute-staff-wrapper {
    display: grid;
    gap: var(--institute-spacing-lg);
    margin: var(--institute-spacing-lg) 0;
}

/* Grid Columns */
.institute-columns-1 { grid-template-columns: 1fr; }
.institute-columns-2 { grid-template-columns: repeat(2, 1fr); }
.institute-columns-3 { grid-template-columns: repeat(3, 1fr); }
.institute-columns-4 { grid-template-columns: repeat(4, 1fr); }
.institute-columns-5 { grid-template-columns: repeat(5, 1fr); }
.institute-columns-6 { grid-template-columns: repeat(6, 1fr); }

/* Responsive Grid */
@media (max-width: 1024px) {
    .institute-columns-4,
    .institute-columns-5,
    .institute-columns-6 {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .institute-columns-3,
    .institute-columns-4,
    .institute-columns-5,
    .institute-columns-6 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .institute-columns-2,
    .institute-columns-3,
    .institute-columns-4,
    .institute-columns-5,
    .institute-columns-6 {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   Card Styles
   ========================================================================== */

.institute-student-card,
.institute-staff-card {
    background: var(--institute-bg-primary);
    border: 1px solid var(--institute-border);
    border-radius: var(--institute-radius-lg);
    padding: var(--institute-spacing-lg);
    box-shadow: var(--institute-shadow-sm);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.institute-student-card:hover,
.institute-staff-card:hover {
    box-shadow: var(--institute-shadow-lg);
    transform: translateY(-2px);
    border-color: var(--institute-primary);
}

.institute-card-photo {
    text-align: center;
    margin-bottom: var(--institute-spacing);
    position: relative;
}

.institute-card-photo img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--institute-bg-secondary);
    box-shadow: var(--institute-shadow-md);
}

.institute-default-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--institute-primary), var(--institute-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    color: white;
    font-size: 2rem;
}

.institute-card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--institute-text-primary);
    margin: 0 0 var(--institute-spacing-sm) 0;
    text-align: center;
}

.institute-card-content p {
    margin: var(--institute-spacing-sm) 0;
    color: var(--institute-text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
}

.institute-card-id {
    text-align: center;
    background: var(--institute-bg-tertiary);
    padding: var(--institute-spacing-sm);
    border-radius: var(--institute-radius);
    font-family: monospace;
    font-weight: 600;
    color: var(--institute-primary) !important;
}

.institute-card-contact {
    margin-top: var(--institute-spacing);
    padding-top: var(--institute-spacing);
    border-top: 1px solid var(--institute-border-light);
}

/* ==========================================================================
   List Styles
   ========================================================================== */

.institute-students-list,
.institute-staff-list {
    display: flex;
    flex-direction: column;
    gap: var(--institute-spacing);
}

.institute-students-list .institute-student-card,
.institute-staff-list .institute-staff-card {
    display: flex;
    align-items: center;
    padding: var(--institute-spacing);
    text-align: left;
}

.institute-students-list .institute-card-photo,
.institute-staff-list .institute-card-photo {
    margin-right: var(--institute-spacing);
    margin-bottom: 0;
    flex-shrink: 0;
}

.institute-students-list .institute-card-photo img,
.institute-staff-list .institute-card-photo img {
    width: 60px;
    height: 60px;
}

.institute-students-list .institute-default-avatar,
.institute-staff-list .institute-default-avatar {
    width: 60px;
    height: 60px;
    font-size: 1.5rem;
}

.institute-students-list .institute-card-title,
.institute-staff-list .institute-card-title {
    text-align: left;
    margin-bottom: var(--institute-spacing-sm);
}

/* ==========================================================================
   Table Styles
   ========================================================================== */

.institute-students-table,
.institute-staff-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--institute-bg-primary);
    border-radius: var(--institute-radius-lg);
    overflow: hidden;
    box-shadow: var(--institute-shadow-md);
}

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

.institute-students-table th,
.institute-staff-table th {
    background: var(--institute-bg-secondary);
    font-weight: 600;
    color: var(--institute-text-primary);
}

.institute-students-table tr:hover,
.institute-staff-table tr:hover {
    background: var(--institute-bg-tertiary);
}

/* ==========================================================================
   Directory Styles
   ========================================================================== */

.institute-directory-wrapper {
    background: var(--institute-bg-primary);
    border-radius: var(--institute-radius-lg);
    padding: var(--institute-spacing-lg);
    box-shadow: var(--institute-shadow-md);
}

.institute-directory-search {
    display: flex;
    gap: var(--institute-spacing-sm);
    margin-bottom: var(--institute-spacing-lg);
    align-items: center;
}

.institute-directory-search input {
    flex: 1;
    padding: var(--institute-spacing-sm) var(--institute-spacing);
    border: 1px solid var(--institute-border);
    border-radius: var(--institute-radius);
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.institute-directory-search input:focus {
    outline: none;
    border-color: var(--institute-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.institute-directory-search button {
    padding: var(--institute-spacing-sm) var(--institute-spacing-lg);
    background: var(--institute-primary);
    color: white;
    border: none;
    border-radius: var(--institute-radius);
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.institute-directory-search button:hover {
    background: #1d4ed8;
}

.institute-directory-filters {
    display: flex;
    gap: var(--institute-spacing);
    margin-bottom: var(--institute-spacing-lg);
    flex-wrap: wrap;
}

.institute-directory-filters select {
    padding: var(--institute-spacing-sm) var(--institute-spacing);
    border: 1px solid var(--institute-border);
    border-radius: var(--institute-radius);
    background: var(--institute-bg-primary);
    font-size: 0.875rem;
    min-width: 150px;
}

/* ==========================================================================
   Statistics Styles
   ========================================================================== */

.institute-stats-wrapper {
    display: grid;
    gap: var(--institute-spacing-lg);
    margin: var(--institute-spacing-lg) 0;
}

.institute-stats-cards {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.institute-stats-counters {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

.institute-stat-item {
    background: linear-gradient(135deg, var(--institute-primary), var(--institute-secondary));
    color: white;
    padding: var(--institute-spacing-lg);
    border-radius: var(--institute-radius-lg);
    text-align: center;
    box-shadow: var(--institute-shadow-md);
    transition: transform 0.3s ease;
}

.institute-stat-item:hover {
    transform: translateY(-4px);
}

.institute-stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--institute-spacing-sm);
    display: block;
}

.institute-stat-label {
    font-size: 0.875rem;
    font-weight: 500;
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

.institute-no-results {
    text-align: center;
    color: var(--institute-text-muted);
    font-style: italic;
    padding: var(--institute-spacing-lg);
    background: var(--institute-bg-secondary);
    border-radius: var(--institute-radius);
    margin: var(--institute-spacing-lg) 0;
}

.institute-loading {
    text-align: center;
    padding: var(--institute-spacing-lg);
}

.institute-loading::after {
    content: "";
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--institute-border);
    border-radius: 50%;
    border-top-color: var(--institute-primary);
    animation: institute-spin 1s ease-in-out infinite;
}

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

/* ==========================================================================
   Status Badges
   ========================================================================== */

.institute-status-badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.institute-status-active {
    background: #d1fae5;
    color: #065f46;
}

.institute-status-inactive {
    background: #fee2e2;
    color: #991b1b;
}

.institute-status-graduated {
    background: #dbeafe;
    color: #1e40af;
}

.institute-status-suspended {
    background: #fef3c7;
    color: #92400e;
}

/* ==========================================================================
   Dark Mode Support
   ========================================================================== */

@media (prefers-color-scheme: dark) {
    :root {
        --institute-text-primary: #f9fafb;
        --institute-text-secondary: #d1d5db;
        --institute-text-muted: #9ca3af;
        
        --institute-bg-primary: #1f2937;
        --institute-bg-secondary: #374151;
        --institute-bg-tertiary: #4b5563;
        
        --institute-border: #4b5563;
        --institute-border-light: #6b7280;
        
        --institute-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.2);
        --institute-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
        --institute-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
    .institute-directory-search,
    .institute-directory-filters {
        display: none;
    }
    
    .institute-student-card,
    .institute-staff-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
    }
    
    .institute-students-wrapper,
    .institute-staff-wrapper {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
}