/* Modern Email Service Dashboard Styles */

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    background-color: #f8fafc;
    color: #1e293b;
    line-height: 1.6;
}

#root {
    min-height: 100vh;
}

/* Loading States */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    font-size: 18px;
    color: #64748b;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #e2e8f0;
    border-top: 4px solid #3b82f6;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: 12px;
}

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

/* Dashboard Layout */
.email-dashboard {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.dashboard-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.header-left .logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.header-left .logo i {
    font-size: 1.5rem;
}

.header-left .logo h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

.refresh-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s;
}

.refresh-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.refresh-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.refresh-btn.loading i {
    animation: spin 1s linear infinite;
}

/* Navigation */
.dashboard-nav {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.nav-tabs {
    display: flex;
    list-style: none;
    padding: 0 2rem;
}

.nav-tab {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.8);
    padding: 1rem 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s;
    border-bottom: 3px solid transparent;
}

.nav-tab:hover {
    color: white;
    background: rgba(255, 255, 255, 0.1);
}

.nav-tab.active {
    color: white;
    border-bottom-color: white;
    background: rgba(255, 255, 255, 0.1);
}

/* Main Content */
.dashboard-main {
    flex: 1;
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

/* Section Titles */
.section-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #1e293b;
}

.section-description {
    color: #64748b;
    margin-bottom: 2rem;
}

/* Email Stats */
.email-stats {
    margin-bottom: 2rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    border-left: 4px solid;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: transform 0.2s, box-shadow 0.2s;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.stat-card.success { border-left-color: #10b981; }
.stat-card.danger { border-left-color: #ef4444; }
.stat-card.warning { border-left-color: #f59e0b; }
.stat-card.info { border-left-color: #3b82f6; }

.stat-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.stat-card.success .stat-icon { background: #d1fae5; color: #10b981; }
.stat-card.danger .stat-icon { background: #fee2e2; color: #ef4444; }
.stat-card.warning .stat-icon { background: #fef3c7; color: #f59e0b; }
.stat-card.info .stat-icon { background: #dbeafe; color: #3b82f6; }

.stat-content {
    flex: 1;
}

.stat-title {
    font-size: 0.875rem;
    color: #64748b;
    margin-bottom: 0.25rem;
}

.stat-value {
    font-size: 1.875rem;
    font-weight: 700;
    color: #1e293b;
}

.stat-skeleton {
    width: 60px;
    height: 30px;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: 0.25rem;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Email Queue */
.email-queue {
    background: white;
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.queue-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid #e2e8f0;
}

.queue-table-container {
    overflow-x: auto;
}

.queue-table {
    width: 100%;
    border-collapse: collapse;
}

.queue-table th,
.queue-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

.queue-table th {
    background: #f8fafc;
    font-weight: 600;
    color: #374151;
    font-size: 0.875rem;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.status-badge.success { background: #d1fae5; color: #065f46; }
.status-badge.danger { background: #fee2e2; color: #991b1b; }
.status-badge.warning { background: #fef3c7; color: #92400e; }
.status-badge.info { background: #dbeafe; color: #1e40af; }
.status-badge.muted { background: #f3f4f6; color: #6b7280; }

.action-buttons {
    display: flex;
    gap: 0.5rem;
}

/* Forms */
.email-form {
    background: white;
    border-radius: 0.75rem;
    padding: 2rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-weight: 500;
    color: #374151;
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.template-params {
    background: #f8fafc;
    border-radius: 0.5rem;
    padding: 1rem;
    margin-bottom: 1rem;
}

.template-params h3 {
    margin-bottom: 1rem;
    color: #374151;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-primary {
    background: #3b82f6;
    color: white;
}

.btn-primary:hover {
    background: #2563eb;
}

.btn-primary:disabled {
    background: #9ca3af;
    cursor: not-allowed;
}

.btn-outline-primary {
    background: transparent;
    color: #3b82f6;
    border: 1px solid #3b82f6;
}

.btn-outline-primary:hover {
    background: #3b82f6;
    color: white;
}

.btn-outline-secondary {
    background: transparent;
    color: #6b7280;
    border: 1px solid #d1d5db;
}

.btn-outline-secondary:hover {
    background: #f3f4f6;
}

.btn-sm {
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 2rem;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-danger {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

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

.template-card {
    background: white;
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}

.template-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.template-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.template-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1e293b;
}

.template-type {
    background: #e0e7ff;
    color: #3730a3;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 500;
}

.template-description {
    color: #64748b;
    margin-bottom: 1rem;
}

.template-params {
    background: #f8fafc;
    padding: 0.75rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.template-actions {
    display: flex;
    gap: 0.5rem;
}

/* Modal */
.template-preview-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal-content {
    background: white;
    border-radius: 0.75rem;
    max-width: 800px;
    width: 90%;
    max-height: 90vh;
    overflow: hidden;
    position: relative;
    z-index: 1001;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid #e2e8f0;
}

.modal-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: #6b7280;
    padding: 0.5rem;
    border-radius: 0.25rem;
}

.close-btn:hover {
    background: #f3f4f6;
    color: #374151;
}

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
    max-height: calc(90vh - 80px);
}

.template-info {
    margin-bottom: 2rem;
}

.template-info p {
    margin-bottom: 0.5rem;
}

.template-info ul {
    margin-left: 1rem;
}

.preview-content {
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
    padding: 1rem;
    background: #f8fafc;
    min-height: 200px;
}

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

.time-range-selector {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.time-range-selector label {
    font-weight: 500;
    color: #374151;
}

.analytics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.analytics-card {
    background: white;
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: #f8fafc;
    border-bottom: 1px solid #e2e8f0;
}

.card-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #374151;
}

.card-header i {
    color: #6b7280;
}

.card-content {
    padding: 1.5rem;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid #f3f4f6;
}

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

.stat-label {
    color: #6b7280;
    font-size: 0.875rem;
}

.stat-value {
    font-weight: 600;
    color: #1e293b;
}

.time-series-chart {
    background: white;
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
}

.chart-container {
    margin-top: 1rem;
}

.chart-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 300px;
    background: #f8fafc;
    border-radius: 0.5rem;
    color: #6b7280;
}

.chart-placeholder i {
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* Empty States */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    color: #6b7280;
    text-align: center;
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state h3 {
    margin-bottom: 0.5rem;
    color: #374151;
}

/* Loading States */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    color: #6b7280;
}

.loading-state .spinner {
    margin-bottom: 1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        padding: 1rem;
    }
    
    .header-left .logo h1 {
        font-size: 1.25rem;
    }
    
    .nav-tabs {
        padding: 0 1rem;
        overflow-x: auto;
    }
    
    .nav-tab {
        padding: 0.75rem 1rem;
        white-space: nowrap;
    }
    
    .dashboard-main {
        padding: 1rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .templates-grid {
        grid-template-columns: 1fr;
    }
    
    .analytics-grid {
        grid-template-columns: 1fr;
    }
    
    .analytics-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .queue-table-container {
        font-size: 0.875rem;
    }
    
    .queue-table th,
    .queue-table td {
        padding: 0.75rem 0.5rem;
    }
}

/* Utility Classes */
.text-success { color: #10b981; }
.text-danger { color: #ef4444; }
.text-warning { color: #f59e0b; }
.text-info { color: #3b82f6; }
.text-muted { color: #6b7280; }