/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: #f8fafc;
    color: #1e293b;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    background: #fff;
    border-bottom: 1px solid #e2e8f0;
    padding: 0.75rem 1rem;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.logo {
    font-size: 1.25rem;
    font-weight: 600;
    color: #3b82f6;
    text-decoration: none;
}

.user-menu {
    position: relative;
    display: inline-block;
}

.user-menu-toggle {
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    color: #64748b;
    font-size: 1rem;
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    min-width: 200px;
    display: none;
    z-index: 1001;
}

.user-dropdown.show {
    display: block;
}

.user-dropdown a {
    display: block;
    padding: 0.75rem 1rem;
    color: #64748b;
    text-decoration: none;
    border-bottom: 1px solid #f1f5f9;
    transition: background 0.2s;
}

.user-dropdown a:hover {
    background: #f8fafc;
    color: #3b82f6;
}

.user-dropdown a:last-child {
    border-bottom: none;
}

/* Sidebar */
.sidebar {
    position: fixed;
    left: 0;
    top: 60px;
    bottom: 60px;
    width: 250px;
    background: #fff;
    border-right: 1px solid #e2e8f0;
    overflow-y: auto;
    z-index: 999;
    transition: transform 0.3s ease;
}

.sidebar-nav {
    padding: 1rem 0;
}

.nav-item {
    margin-bottom: 0.25rem;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: #64748b;
    text-decoration: none;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.nav-link:hover,
.nav-link.active {
    background: #f1f5f9;
    color: #3b82f6;
    border-left-color: #3b82f6;
}

.nav-icon {
    margin-right: 0.75rem;
    width: 20px;
    text-align: center;
}

/* Main Content */
.main-content {
    margin-left: 250px;
    margin-top: 60px;
    margin-bottom: 60px;
    padding: 1.5rem;
    flex: 1;
    transition: margin-left 0.3s ease;
}

/* Footer */
.footer {
    background: #fff;
    border-top: 1px solid #e2e8f0;
    padding: 1rem;
    text-align: center;
    color: #64748b;
    font-size: 0.875rem;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

/* Cards */
.card {
    background: #fff;
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    border: 1px solid #e2e8f0;
    overflow: hidden;
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid #e2e8f0;
    background: #f8fafc;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1e293b;
    margin: 0;
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid #e2e8f0;
    background: #f8fafc;
}

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

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

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

.form-row .form-group {
    margin-bottom: 0;
}

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

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

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

.form-control.error {
    border-color: #ef4444;
}

.form-error {
    color: #ef4444;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s;
    gap: 0.5rem;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

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

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

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

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

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

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

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

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

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Tables */
.table-container {
    overflow-x: auto;
    border-radius: 0.5rem;
    border: 1px solid #e2e8f0;
}

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

.table th,
.table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

.table th {
    background: #f8fafc;
    font-weight: 600;
    color: #374151;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table td {
    vertical-align: middle;
}

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

/* File Upload */
.file-upload {
    position: relative;
    display: inline-block;
    width: 100%;
}

.file-upload input[type="file"] {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.file-upload-label {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    border: 2px dashed #d1d5db;
    border-radius: 0.5rem;
    background: #f9fafb;
    color: #6b7280;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
    min-height: 60px;
}

.file-upload-label:hover {
    border-color: #3b82f6;
    background: #eff6ff;
    color: #3b82f6;
}

/* File Upload Container */
.file-upload-container {
    width: 100%;
}

.image-preview {
    margin-top: 0.5rem;
    min-height: 20px;
}

.image-preview img {
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* Tags */
.tag {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 500;
}

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

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

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

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.badge-primary {
    background: #eff6ff;
    color: #1e40af;
}

.badge-secondary {
    background: #f3f4f6;
    color: #374151;
}

.badge-pink {
    background: #fce7f3;
    color: #be185d;
}

.badge-gray {
    background: #f3f4f6;
    color: #6b7280;
}

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

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

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

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

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border-color: #bfdbfe;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: #6b7280;
}

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

.empty-state p {
    margin-bottom: 1.5rem;
}

/* Checkbox Group */
.checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.checkbox-item {
    display: flex;
    align-items: center;
    padding: 0.5rem;
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
}

.checkbox-item:hover {
    background: #f8fafc;
    border-color: #3b82f6;
}

.checkbox-item input[type="checkbox"] {
    margin-right: 0.5rem;
    width: 16px;
    height: 16px;
}

.checkbox-item input[type="checkbox"]:checked + span {
    color: #3b82f6;
    font-weight: 500;
}

/* Utility Classes */
.text-muted { color: #6b7280; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mt-4 { margin-top: 1rem; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .header {
        padding: 0.5rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .table th,
    .table td {
        padding: 0.5rem;
        font-size: 0.875rem;
    }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

@media print {
    .header,
    .sidebar,
    .footer {
        display: none;
    }
    
    .main-content {
        margin: 0;
        padding: 0;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #000;
    }
}

/* Form Sections */
.form-section {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 0.75rem;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.section-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #f1f5f9;
}

.form-section:last-of-type {
    margin-bottom: 0;
}