/* AIKeeper - Main Stylesheet */
/* Mobile-first, responsive design with purple gradient branding */

:root {
    --primary: #8b5cf6;
    --primary-dark: #7c3aed;
    --secondary: #6366f1;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --light: #f3f4f6;
    --dark: #1f2937;
    --border: #e5e7eb;
    --text: #374151;
    --text-light: #6b7280;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    background: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.nav-brand h1 {
    font-size: 24px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-menu a {
    color: var(--text);
    text-decoration: none;
    padding: 8px 15px;
    border-radius: 6px;
    transition: all 0.2s;
}

.nav-menu a:hover {
    background: var(--light);
}

.nav-menu a.active {
    background: var(--primary);
    color: white;
}

/* Main Content */
.main-content {
    background: white;
    border-radius: 12px;
    margin: 30px auto;
    padding: 30px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.page-header {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border);
}

.page-header h2 {
    font-size: 28px;
    color: var(--dark);
    margin-bottom: 8px;
}

.page-header p {
    color: var(--text-light);
    font-size: 16px;
}

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

.stat-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 25px;
    border-radius: 10px;
    text-align: center;
}

.stat-value {
    font-size: 36px;
    font-weight: bold;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    opacity: 0.9;
}

/* Filter Bar */
.filter-bar {
    background: var(--light);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 30px;
}

.filter-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.search-box {
    display: flex;
    gap: 10px;
}

.search-box input {
    flex: 1;
    padding: 10px 15px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
}

.filter-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}

.filter-controls select {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: white;
    font-size: 14px;
}

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

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

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-secondary {
    background: var(--text-light);
    color: white;
}

.btn-secondary:hover {
    background: var(--text);
}

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

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

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

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-block {
    display: block;
    width: 100%;
}

.btn-icon {
    padding: 8px 12px;
    font-size: 18px;
}

.btn-link {
    background: none;
    color: var(--primary);
    padding: 8px 12px;
}

/* GPT Cards */
.gpt-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.gpt-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px;
    transition: all 0.2s;
}

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

.gpt-card.pinned {
    border-left: 4px solid var(--warning);
    background: #fffbeb;
}

.gpt-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.gpt-title-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
}

.gpt-title-row h3 {
    font-size: 18px;
    color: var(--dark);
    margin: 0;
}

.pin-indicator, .favorite-indicator {
    font-size: 18px;
}

.gpt-meta {
    display: flex;
    gap: 10px;
    align-items: center;
}

.badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-chatgpt {
    background: #10a37f;
    color: white;
}

.badge-claude {
    background: #8b5cf6;
    color: white;
}

.badge-other {
    background: var(--text-light);
    color: white;
}

.rating-stars {
    display: flex;
    gap: 2px;
}

.star {
    color: #d1d5db;
    font-size: 16px;
}

.star.filled {
    color: #fbbf24;
}

.gpt-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

.category-tag {
    background: var(--light);
    color: var(--text);
    padding: 4px 12px;
    border-radius: 16px;
    font-size: 13px;
}

.gpt-instructions, .gpt-comments {
    background: #f9fafb;
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 12px;
    font-size: 14px;
}

.gpt-instructions strong, .gpt-comments strong {
    display: block;
    margin-bottom: 6px;
    color: var(--dark);
}

.gpt-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 15px;
    font-size: 14px;
    color: var(--text-light);
}

.gpt-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding-top: 15px;
    border-top: 1px solid var(--border);
}

/* Forms */
.form-section {
    background: #f9fafb;
    padding: 25px;
    border-radius: 8px;
    margin-bottom: 25px;
}

.form-section.highlighted {
    background: #fef3c7;
    border: 2px solid var(--warning);
}

.form-section h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--dark);
}

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

.form-group.required label:after {
    content: " *";
    color: var(--danger);
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="url"],
.form-group input[type="date"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
}

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

.form-group small {
    display: block;
    margin-top: 6px;
    color: var(--text-light);
    font-size: 13px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding: 8px 0;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 10px;
}

.form-group-inline {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.form-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    padding-top: 20px;
}

/* Auth Pages */
.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.auth-container {
    width: 100%;
    max-width: 400px;
}

.auth-box {
    background: white;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

.auth-box h1 {
    text-align: center;
    margin-bottom: 10px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 30px;
}

.auth-footer {
    text-align: center;
    margin-top: 20px;
    font-size: 14px;
    color: var(--text-light);
}

.auth-footer a {
    color: var(--primary);
    text-decoration: none;
}

/* Alerts */
.alert {
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border-left: 4px solid var(--danger);
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border-left: 4px solid var(--success);
}

.alert-warning {
    background: #fef3c7;
    color: #92400e;
    border-left: 4px solid var(--warning);
}

/* Settings */
.settings-section {
    background: #f9fafb;
    padding: 25px;
    border-radius: 8px;
    margin-bottom: 25px;
}

.settings-section h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--dark);
}

.stat-item {
    text-align: center;
    padding: 15px;
}

.stat-item strong {
    display: block;
    font-size: 24px;
    color: var(--primary);
    margin-bottom: 5px;
}

.stat-item span {
    font-size: 14px;
    color: var(--text-light);
}

/* Categories */
.categories-layout {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 30px;
    margin-bottom: 30px;
}

.category-form-section, .category-list-section {
    background: #f9fafb;
    padding: 25px;
    border-radius: 8px;
}

.category-tree {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.category-item {
    background: white;
    padding: 15px;
    border-radius: 6px;
    border-left: 3px solid var(--primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.category-item.level-1 {
    margin-left: 20px;
    border-left-color: var(--secondary);
}

.category-item.level-2 {
    margin-left: 40px;
    border-left-color: var(--text-light);
}

.category-info {
    flex: 1;
}

.category-name {
    font-weight: 600;
    color: var(--dark);
    display: block;
    margin-bottom: 5px;
}

.category-meta {
    font-size: 13px;
    color: var(--text-light);
}

.category-actions {
    display: flex;
    gap: 8px;
}

/* Info Box */
.info-box {
    background: #eff6ff;
    border: 1px solid #bfdbfe;
    border-radius: 8px;
    padding: 20px;
    margin-top: 30px;
}

.info-box h4 {
    color: var(--dark);
    margin-bottom: 12px;
}

.info-box ul {
    margin-left: 20px;
}

.info-box li {
    margin-bottom: 8px;
    color: var(--text);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-state p {
    color: var(--text-light);
    margin-bottom: 20px;
    font-size: 16px;
}

/* Confirmation Box */
.confirmation-box {
    background: white;
    border: 2px solid var(--warning);
    border-radius: 8px;
    padding: 30px;
    max-width: 600px;
    margin: 0 auto;
}

.confirmation-box h3 {
    color: var(--dark);
    margin-bottom: 20px;
}

/* Footer */
.footer {
    text-align: center;
    padding: 30px 20px;
    color: white;
    margin-top: 50px;
}

.footer p {
    opacity: 0.9;
}

/* Hint Text */
.hint {
    color: var(--text-light);
    font-size: 14px;
    font-style: italic;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-menu {
        width: 100%;
        justify-content: center;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .filter-controls {
        flex-direction: column;
        width: 100%;
    }
    
    .filter-controls select,
    .filter-controls label {
        width: 100%;
    }
    
    .gpt-header {
        flex-direction: column;
        gap: 10px;
    }
    
    .gpt-actions {
        flex-direction: column;
    }
    
    .gpt-actions .btn {
        width: 100%;
    }
    
    .categories-layout {
        grid-template-columns: 1fr;
    }
    
    .category-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .category-actions {
        width: 100%;
        justify-content: flex-start;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .form-actions .btn {
        width: 100%;
    }
    
    .main-content {
        padding: 20px;
        margin: 20px auto;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-menu a {
        font-size: 13px;
        padding: 6px 10px;
    }
    
    .gpt-card {
        padding: 15px;
    }
}