/* Admin-specific styles */

/* Login Screen */
.login-screen {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    position: relative;
    overflow: hidden;
}

.login-screen::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M 20 0 L 0 0 0 20" fill="none" stroke="%231a1a2e" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.2;
}

.login-container {
    width: 100%;
    max-width: 400px;
    z-index: 1;
    position: relative;
}

.login-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 3rem 2rem;
    box-shadow: var(--shadow-xl);
    backdrop-filter: blur(10px);
    animation: slideInUp 0.6s ease-out;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    display: block;
}

.login-header h2 {
    color: var(--text-primary);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.login-header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.login-form .form-group {
    margin-bottom: 1.5rem;
}

.login-form label {
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 0.5rem;
    display: block;
}

.login-form label i {
    margin-right: 0.5rem;
    color: var(--primary-color);
}

.login-form input {
    width: 100%;
    padding: 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.login-form input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(99, 102, 241, 0.25);
}

.btn-login {
    width: 100%;
    padding: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 8px;
    margin-top: 1rem;
}

.login-footer {
    text-align: center;
    margin-top: 2rem;
}

.back-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.back-link:hover {
    color: var(--primary-color);
}

/* Admin Dashboard */
.admin-dashboard {
    min-height: 100vh;
    background: var(--bg-primary);
}

.admin-navbar {
    background: rgba(15, 15, 35, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
}

.admin-content {
    padding: 2rem 0;
}

/* Dashboard Header */
.dashboard-header {
    margin-bottom: 3rem;
}

.dashboard-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.dashboard-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.stats-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    text-align: center;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.stat-item i {
    font-size: 2rem;
    color: var(--primary-color);
}

.stat-item span {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-item small {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Upload Section */
.upload-section {
    margin-bottom: 3rem;
}

.upload-card, .info-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    height: 100%;
}

.upload-card .card-header, .info-card .card-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem;
}

.upload-card .card-header h3, .info-card .card-header h4 {
    color: var(--text-primary);
    font-weight: 600;
    margin: 0;
}

.upload-card .card-body {
    padding: 2rem;
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 0.5rem;
    display: block;
}

.form-group label i {
    margin-right: 0.5rem;
    color: var(--primary-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(99, 102, 241, 0.25);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* File Upload Area */
.file-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--bg-secondary);
}

.file-upload-area:hover {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
}

.file-upload-area.dragover {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
}

.upload-placeholder {
    color: var(--text-secondary);
}

.upload-placeholder i {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.upload-placeholder p {
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.upload-placeholder small {
    font-size: 0.8rem;
    opacity: 0.7;
}

.file-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-top: 1rem;
}

.file-info i {
    color: var(--error-color);
    font-size: 1.2rem;
}

.file-info span {
    color: var(--text-primary);
    font-weight: 500;
    flex: 1;
}

.btn-remove-file {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.btn-remove-file:hover {
    color: var(--error-color);
    background: rgba(239, 68, 68, 0.1);
}

/* Form Actions */
.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.btn-upload {
    padding: 1rem 2rem;
    font-weight: 600;
}

/* Guidelines */
.guidelines-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.guidelines-list li {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.guidelines-list li i {
    color: var(--success-color);
    margin-top: 0.2rem;
    flex-shrink: 0;
}

/* Newsletters Section */
.newsletters-section {
    margin-top: 3rem;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.section-header h3 {
    color: var(--text-primary);
    font-weight: 600;
    margin: 0;
}

.newsletters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

/* Admin Newsletter Card */
.admin-newsletter-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.admin-newsletter-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.admin-newsletter-card h4 {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.admin-newsletter-card .date {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.admin-newsletter-card .description {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    line-height: 1.4;
}

.admin-newsletter-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.admin-newsletter-actions .btn {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

/* Modal Styles */
.modal-content {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem;
}

.modal-body {
    padding: 1.5rem;
    color: var(--text-primary);
}

.modal-footer {
    border-top: 1px solid var(--border-color);
    padding: 1.5rem;
}

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

/* Animations */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--primary-color);
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .login-card {
        padding: 2rem 1.5rem;
    }
    
    .dashboard-title {
        font-size: 2rem;
    }
    
    .upload-card .card-body {
        padding: 1.5rem;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .section-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .newsletters-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .login-screen {
        padding: 1rem;
    }
    
    .dashboard-title {
        font-size: 1.75rem;
    }
    
    .stats-card {
        margin-top: 1rem;
    }
    
    .upload-card .card-body {
        padding: 1rem;
    }
    
    .file-upload-area {
        padding: 1.5rem;
    }
}

/* Success/Error States */
.success {
    border-color: var(--success-color) !important;
}

.error {
    border-color: var(--error-color) !important;
}

/* Utility Classes */
.text-success {
    color: var(--success-color) !important;
}

.text-danger {
    color: var(--error-color) !important;
}

.text-warning {
    color: var(--warning-color) !important;
}