/* Reset and Base Styles */
* { 
    margin: 0; 
    padding: 0; 
    box-sizing: border-box; 
}

body { 
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #f8fafc;
    color: #374151;
    line-height: 1.6;
}

/* Auth Styles */
.auth-container {
    background: white;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
    overflow: hidden;
    margin: 20px auto;
}

.auth-header {
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    color: white;
    padding: 30px;
    text-align: center;
}

.auth-header h1 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 5px;
}

.auth-header p {
    opacity: 0.9;
    font-size: 14px;
}

.auth-tabs {
    display: flex;
    background: #f8fafc;
    border-bottom: 1px solid #e2e8f0;
}

.auth-tab {
    flex: 1;
    padding: 15px;
    text-align: center;
    background: none;
    border: none;
    cursor: pointer;
    font-weight: 500;
    color: #64748b;
    transition: all 0.2s;
}

.auth-tab.active {
    background: white;
    color: #4f46e5;
    border-bottom: 2px solid #4f46e5;
}

.auth-content {
    padding: 30px;
}

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

/* Header Styles */
.header {
    background: white;
    border-bottom: 1px solid #e2e8f0;
    padding: 0 20px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}

.logo {
    font-size: 20px;
    font-weight: 700;
    color: #4f46e5;
    text-decoration: none;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 15px;
}

.credits-badge {
    background: #4f46e5;
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.logout-btn {
    background: none;
    border: 1px solid #d1d5db;
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    color: #6b7280;
    text-decoration: none;
}

.logout-btn:hover {
    background: #f3f4f6;
}

/* Main Layout */
.main-content {
    display: flex;
    flex: 1;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background: white;
    border-right: 1px solid #e2e8f0;
    padding: 20px 0;
    min-height: calc(100vh - 60px);
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: #6b7280;
    text-decoration: none;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background: #f8fafc;
    color: #4f46e5;
}

.nav-item.active {
    background: #f8fafc;
    color: #4f46e5;
    border-left-color: #4f46e5;
}

.nav-icon {
    margin-right: 10px;
    width: 20px;
    text-align: center;
}

/* Content Area */
.content-area {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
}

.page-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #374151;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: #4f46e5;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 14px;
    color: #6b7280;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Cards */
.card {
    background: white;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
    margin-bottom: 20px;
    overflow: hidden;
}

.card-header {
    padding: 20px;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    color: #374151;
}

.card-body {
    padding: 20px;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: #374151;
}

.form-input, .form-textarea, .form-select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.2s;
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
    outline: none;
    border-color: #4f46e5;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
    font-family: inherit;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 14px;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: #4f46e5;
    color: white;
}

.btn-primary:hover {
    background: #4338ca;
}

.btn-secondary {
    background: #6b7280;
    color: white;
}

.btn-secondary:hover {
    background: #4b5563;
}

.btn-success {
    background: #10b981;
    color: white;
}

.btn-success:hover {
    background: #059669;
}

.btn-danger {
    background: #ef4444;
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.table th, .table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

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

.table tr:hover {
    background: #f8fafc;
}

/* Alerts */
.alert {
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 15px;
    font-size: 14px;
}

.alert-success {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}

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

.alert-warning {
    background: #fef3c7;
    color: #92400e;
    border: 1px solid #fde68a;
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #93c5fd;
}

/* Tabs */
.content-tabs {
    display: flex;
    border-bottom: 1px solid #e2e8f0;
    margin-bottom: 20px;
    background: white;
    border-radius: 8px 8px 0 0;
    overflow: hidden;
}

.content-tab {
    padding: 12px 20px;
    background: none;
    border: none;
    cursor: pointer;
    font-weight: 500;
    color: #6b7280;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.content-tab.active {
    color: #4f46e5;
    border-bottom-color: #4f46e5;
    background: #f8fafc;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-success {
    background: #dcfce7;
    color: #166534;
}

.badge-warning {
    background: #fef3c7;
    color: #92400e;
}

.badge-danger {
    background: #fee2e2;
    color: #991b1b;
}

.badge-info {
    background: #dbeafe;
    color: #1e40af;
}

/* Loading States */
.loading {
    text-align: center;
    padding: 40px;
    color: #6b7280;
}

.loading-spinner {
    border: 3px solid #f3f4f6;
    border-top: 3px solid #4f46e5;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    margin: 0 auto 15px;
}

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

/* Empty States */
.empty-state {
    text-align: center;
    padding: 40px;
    color: #6b7280;
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: 15px;
    opacity: 0.5;
}

/* Responsive Design */
@media (max-width: 768px) {
    .main-content {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        min-height: auto;
        border-right: none;
        border-bottom: 1px solid #e2e8f0;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .content-tabs {
        flex-wrap: wrap;
    }
    
    .content-tab {
        flex: 1;
        min-width: 120px;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: #6b7280; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 20px; }
.mb-3 { margin-bottom: 30px; }
.mt-1 { margin-top: 10px; }
.mt-2 { margin-top: 20px; }
.mt-3 { margin-top: 30px; }
.hidden { display: none; }

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: white;
    border-radius: 8px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    padding: 20px;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
    color: #374151;
}

.close-btn {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #6b7280;
}

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

.modal-body {
    padding: 20px;
}

/* Progress Bars */
.progress {
    background: #f3f4f6;
    border-radius: 10px;
    overflow: hidden;
    height: 20px;
}

.progress-bar {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 12px;
    font-weight: 500;
}