/**
 * Custom CSS for Photo Album Data Capture Platform
 * Built with Bootstrap 5 and modern design principles
 */

/* ===== ROOT VARIABLES ===== */
:root {
    --primary-color: #0d6efd;
    --primary-dark: #0b5ed7;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    
    --border-radius: 0.5rem;
    --border-radius-sm: 0.25rem;
    --border-radius-lg: 0.75rem;
    
    --box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --box-shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.05);
    --box-shadow-lg: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    
    --transition: all 0.15s ease-in-out;
    --transition-fast: all 0.1s ease-in-out;
    --transition-slow: all 0.3s ease-in-out;
}

/* ===== GLOBAL STYLES ===== */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
    color: var(--dark-color);
    line-height: 1.6;
}

.container-fluid {
    max-width: 1400px;
}

/* ===== UTILITY CLASSES ===== */
.text-truncate-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.cursor-pointer {
    cursor: pointer;
}

.border-dashed {
    border-style: dashed !important;
}

.font-monospace {
    font-family: 'Courier New', Courier, monospace;
}

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

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.spin {
    animation: spin 1s linear infinite;
}

.fade-in {
    animation: fadeIn 0.3s ease-out;
}

.slide-in {
    animation: slideIn 0.3s ease-out;
}

.pulse {
    animation: pulse 2s infinite;
}

/* ===== HEADER & NAVIGATION ===== */
.navbar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    box-shadow: var(--box-shadow-lg);
    border-bottom: 3px solid rgba(255, 255, 255, 0.1);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: white !important;
    text-decoration: none;
}

.navbar-brand:hover {
    color: rgba(255, 255, 255, 0.9) !important;
    transform: scale(1.05);
    transition: var(--transition);
}

.navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
}

.navbar-nav .nav-link:hover {
    color: white !important;
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

/* ===== LOGIN PAGE ===== */
.login-container {
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-card {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    max-width: 400px;
    width: 100%;
    margin: 2rem;
}

.login-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 2rem;
    text-align: center;
}

.login-header h2 {
    margin: 0;
    font-weight: 700;
}

.login-header p {
    margin: 0.5rem 0 0 0;
    opacity: 0.9;
}

.login-body {
    padding: 2rem;
}

.login-form .form-floating {
    margin-bottom: 1rem;
}

.login-form .form-control {
    border: 2px solid #e9ecef;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.login-form .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

.password-toggle {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--secondary-color);
    cursor: pointer;
    z-index: 10;
}

.password-toggle:hover {
    color: var(--primary-color);
}

.btn-login {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border: none;
    border-radius: var(--border-radius);
    padding: 0.75rem 2rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: var(--transition);
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(13, 110, 253, 0.3);
}

.demo-credentials {
    background-color: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-top: 1rem;
    font-size: 0.875rem;
}

.demo-credentials h6 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

/* ===== DASHBOARD ===== */
.dashboard-header {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    padding: 2rem;
    margin-bottom: 2rem;
}

.dashboard-title {
    color: var(--dark-color);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.dashboard-subtitle {
    color: var(--secondary-color);
    margin: 0;
}

/* ===== STATISTICS CARDS ===== */
.stats-card {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    padding: 1.5rem;
    transition: var(--transition);
    border-left: 4px solid var(--primary-color);
}

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

.stats-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
}

.stats-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark-color);
    margin: 0;
}

.stats-label {
    color: var(--secondary-color);
    font-size: 0.875rem;
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ===== FILTERS & SEARCH ===== */
.filters-card {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.search-input {
    border: 2px solid #e9ecef;
    border-radius: var(--border-radius);
    padding: 0.75rem 1rem;
    transition: var(--transition);
}

.search-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

.filter-select {
    border: 2px solid #e9ecef;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.filter-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

/* ===== BUTTONS ===== */
.btn {
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: var(--transition);
    border: none;
    padding: 0.5rem 1rem;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    box-shadow: var(--box-shadow-sm);
}

.btn-primary:hover {
    box-shadow: 0 4px 15px rgba(13, 110, 253, 0.3);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color) 0%, #146c43 100%);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color) 0%, #b02a37 100%);
}

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

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

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

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

/* ===== USERS TABLE ===== */
.users-table-card {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    overflow: hidden;
}

.table {
    margin: 0;
}

.table thead th {
    background-color: #f8f9fa;
    border-bottom: 2px solid #dee2e6;
    font-weight: 600;
    color: var(--dark-color);
    padding: 1rem 0.75rem;
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.5px;
}

.table tbody td {
    padding: 1rem 0.75rem;
    vertical-align: middle;
    border-bottom: 1px solid #f1f3f4;
}

.table tbody tr {
    transition: var(--transition);
}

.table tbody tr:hover {
    background-color: #f8f9fa;
    transform: scale(1.01);
}

/* ===== USER PHOTOS ===== */
.user-photo {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid #e9ecef;
    transition: var(--transition);
}

.user-photo:hover {
    transform: scale(1.1);
    border-color: var(--primary-color);
}

/* ===== BADGES ===== */
.badge {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    border-radius: var(--border-radius);
}

/* ===== PAGINATION ===== */
.pagination {
    margin: 0;
}

.page-link {
    border: 1px solid #dee2e6;
    color: var(--primary-color);
    padding: 0.5rem 0.75rem;
    transition: var(--transition);
}

.page-link:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    transform: translateY(-1px);
}

.page-item.active .page-link {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.pagination-info {
    color: var(--secondary-color);
    font-size: 0.875rem;
}

/* ===== MODAL ===== */
.modal-content {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.modal-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    border-bottom: none;
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
    padding: 1.5rem 2rem;
}

.modal-title {
    font-weight: 700;
    margin: 0;
}

.btn-close {
    filter: invert(1);
    opacity: 0.8;
}

.btn-close:hover {
    opacity: 1;
}

.modal-body {
    padding: 2rem;
}

.modal-footer {
    border-top: 1px solid #e9ecef;
    padding: 1.5rem 2rem;
}

/* ===== FORM STYLES ===== */
.form-floating {
    margin-bottom: 1rem;
}

.form-control, .form-select {
    border: 2px solid #e9ecef;
    border-radius: var(--border-radius);
    transition: var(--transition);
    padding: 0.75rem 1rem;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

.form-floating > .form-control:focus ~ label,
.form-floating > .form-control:not(:placeholder-shown) ~ label {
    color: var(--primary-color);
}

.invalid-feedback {
    display: block;
    font-size: 0.875rem;
    color: var(--danger-color);
    margin-top: 0.25rem;
}

.is-invalid {
    border-color: var(--danger-color) !important;
}

.is-valid {
    border-color: var(--success-color) !important;
}

/* ===== PHOTO UPLOAD ===== */
.photo-upload-area {
    border: 3px dashed #dee2e6;
    border-radius: var(--border-radius-lg);
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background-color: #f8f9fa;
}

.photo-upload-area:hover,
.photo-upload-area.drag-over {
    border-color: var(--primary-color);
    background-color: rgba(13, 110, 253, 0.05);
    transform: scale(1.02);
}

.photo-upload-icon {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.photo-upload-text {
    color: var(--dark-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.photo-upload-hint {
    color: var(--secondary-color);
    font-size: 0.875rem;
    margin: 0;
}

.photo-preview {
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    position: relative;
    max-width: 300px;
    margin: 0 auto;
}

.photo-preview img {
    width: 100%;
    height: auto;
    display: block;
}

.remove-photo-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(220, 53, 69, 0.9);
    color: white;
    border: none;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.remove-photo-btn:hover {
    background: var(--danger-color);
    transform: scale(1.1);
}

/* ===== PROGRESS BAR ===== */
.upload-progress {
    margin-top: 1rem;
}

.progress {
    height: 8px;
    border-radius: var(--border-radius);
    background-color: #e9ecef;
}

.progress-bar {
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border-radius: var(--border-radius);
    transition: width 0.3s ease;
}

/* ===== LOADING SPINNER ===== */
.loading-spinner {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 9999;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    padding: 1rem;
    box-shadow: var(--box-shadow-lg);
}

.spinner-border {
    color: var(--primary-color);
}

/* ===== TOASTR CUSTOMIZATION ===== */
.toast-container {
    z-index: 10000;
}

#toast-container > div {
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-lg);
}

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

.toast-error {
    background-color: var(--danger-color);
}

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

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

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .container-fluid {
        padding: 1rem;
    }
    
    .dashboard-header {
        padding: 1.5rem;
        text-align: center;
    }
    
    .stats-card {
        margin-bottom: 1rem;
        text-align: center;
    }
    
    .filters-card {
        padding: 1rem;
    }
    
    .table-responsive {
        border-radius: var(--border-radius-lg);
    }
    
    .modal-body {
        padding: 1.5rem;
    }
    
    .photo-upload-area {
        padding: 2rem 1rem;
    }
    
    .btn-group-sm .btn {
        padding: 0.25rem 0.5rem;
        font-size: 0.75rem;
    }
}

@media (max-width: 576px) {
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .dashboard-title {
        font-size: 1.5rem;
    }
    
    .stats-number {
        font-size: 1.5rem;
    }
    
    .table thead th {
        padding: 0.75rem 0.5rem;
        font-size: 0.75rem;
    }
    
    .table tbody td {
        padding: 0.75rem 0.5rem;
    }
    
    .user-photo {
        width: 40px;
        height: 40px;
    }
    
    .modal-header,
    .modal-body,
    .modal-footer {
        padding: 1rem;
    }
}

/* ===== PRINT STYLES ===== */
@media print {
    .navbar,
    .filters-card,
    .modal,
    .btn,
    .pagination {
        display: none !important;
    }
    
    .users-table-card {
        box-shadow: none;
        border: 1px solid #dee2e6;
    }
    
    .table {
        font-size: 0.875rem;
    }
    
    .user-photo {
        width: 30px;
        height: 30px;
    }
}

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

/* Focus styles for keyboard navigation */
.btn:focus,
.form-control:focus,
.form-select:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .btn {
        border: 2px solid currentColor;
    }
    
    .table tbody tr:hover {
        background-color: #000;
        color: #fff;
    }
}