/* style.css - Light Theme (matching DestoloLabs) */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-card: #ffffff;
    --bg-elevated: #f1f5f9;
    --border: #e2e8f0;
    --border-light: #eef2ff;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-glow: rgba(59,130,246,0.1);
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Header */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.header-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 24px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.logo span {
    background: none;
    color: var(--text-primary);
    font-weight: 400;
}

.nav {
    display: flex;
    gap: 28px;
}

.nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.nav a:hover,
.nav a.active {
    color: var(--accent);
}

.auth {
    display: flex;
    gap: 12px;
}

.btn-auth {
    padding: 8px 18px;
    border-radius: 40px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    background: transparent;
    color: var(--text-secondary);
}

.btn-signin:hover {
    color: var(--accent);
    background: var(--bg-elevated);
}

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

.btn-signup:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

.hamburger {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
}

/* Main Layout */
.main-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 24px;
}

.layout-grid {
    display: grid;
    grid-template-columns: 280px 1fr 300px;
    gap: 24px;
}

/* Sidebars */
.sidebar-left,
.sidebar-right {
    position: sticky;
    top: 90px;
    align-self: start;
}

.sidebar-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
}

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

.category-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-primary);
}

.category-header span i {
    margin-right: 10px;
    color: var(--accent);
}

.chevron {
    transition: transform 0.2s;
    font-size: 12px;
    color: var(--text-muted);
}

.category-content {
    display: none;
    padding-left: 28px;
    margin-top: 8px;
}

.category-content.open {
    display: block;
}

.category-content a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

.category-content a i {
    width: 20px;
    font-size: 14px;
}

.category-content a:hover,
.category-content a.active {
    color: var(--accent);
}

/* Right Sidebar */
.sidebar-right h3 {
    font-size: 16px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.blog-list, .glossary-list {
    list-style: none;
}

.blog-list li, .glossary-list li {
    margin-bottom: 14px;
    font-size: 13px;
}

.blog-list a, .glossary-list a {
    color: var(--text-secondary);
    text-decoration: none;
    display: block;
    margin-bottom: 4px;
}

.blog-list a:hover, .glossary-list a:hover {
    color: var(--accent);
}

.post-meta {
    font-size: 11px;
    color: var(--text-muted);
}

.glossary-list span {
    font-size: 11px;
    color: var(--text-muted);
    display: block;
}

/* Tool Area */
.tool-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.tool-header {
    padding: 28px 28px 20px;
    border-bottom: 1px solid var(--border);
}

.tool-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-elevated);
    padding: 4px 12px;
    border-radius: 40px;
    font-size: 12px;
    color: var(--accent);
    margin-bottom: 16px;
}

.tool-header h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 12px;
}

.tool-description {
    color: var(--text-secondary);
    font-size: 15px;
}

.input-card {
    padding: 24px 28px;
}

.url-input-group,
.manual-url-group {
    margin-bottom: 24px;
}

.search-label {
    font-weight: 600;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.url-input-wrapper {
    display: flex;
    gap: 12px;
}

.keyword-input {
    flex: 1;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px 18px;
    color: var(--text-primary);
    font-size: 14px;
    transition: all 0.2s;
}

.keyword-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.btn-crawl, .btn-add-manual {
    padding: 0 24px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-crawl {
    background: var(--accent);
    border: none;
    color: white;
}

.btn-crawl:hover {
    background: var(--accent-hover);
}

.btn-add-manual:hover {
    background: var(--border);
}

.url-hint {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 8px;
}

/* Progress Bar */
.progress-bar {
    margin: 20px 0;
}

.progress-track {
    background: var(--bg-elevated);
    border-radius: 20px;
    height: 6px;
    overflow: hidden;
}

.progress-fill {
    width: 0%;
    height: 100%;
    background: var(--gradient);
    border-radius: 20px;
    transition: width 0.3s ease;
}

.progress-text {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 8px;
}

/* URL List */
.url-list-section {
    margin-top: 28px;
    border-top: 1px solid var(--border);
    padding-top: 20px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 16px;
    font-weight: 600;
}

.url-stats {
    background: var(--bg-elevated);
    padding: 2px 8px;
    border-radius: 40px;
    font-size: 12px;
}

.url-list-container {
    max-height: 300px;
    overflow-y: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
}

.url-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}

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

.url-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent);
}

.url-text {
    flex: 1;
    word-break: break-all;
    color: var(--text-secondary);
}

.url-actions {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.btn-select-all, .btn-deselect-all, .btn-clear-all {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text-secondary);
    transition: all 0.2s;
}

.btn-select-all:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.btn-clear-all:hover {
    border-color: var(--danger);
    color: var(--danger);
}

/* Options Grid */
.options-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin: 24px 0;
    padding: 20px 0;
    border-top: 1px solid var(--border);
}

.option-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 14px;
}

.select-input {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
}

.btn-generate {
    width: 100%;
    padding: 16px;
    background: var(--gradient);
    border: none;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 16px;
    color: white;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    margin-top: 8px;
}

.btn-generate:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(59,130,246,0.3);
}

/* Output Area */
.output-card {
    margin: 0 28px 28px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border);
}

.output-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
}

.output-actions {
    display: flex;
    gap: 12px;
}

.btn-copy, .btn-download {
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text-secondary);
    transition: all 0.2s;
}

.btn-copy:hover, .btn-download:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.sitemap-preview {
    max-height: 400px;
    overflow: auto;
    padding: 20px;
    background: #f1f5f9;
}

.sitemap-preview pre {
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 12px;
    color: #0f172a;
    white-space: pre-wrap;
    word-break: break-all;
}

.insight-card {
    display: flex;
    gap: 16px;
    padding: 16px 20px;
    background: var(--bg-card);
    border-top: 1px solid var(--border);
}

.insight-icon {
    font-size: 24px;
    color: var(--accent);
}

.insight-content strong {
    display: block;
    font-size: 13px;
    margin-bottom: 4px;
}

.insight-content p {
    font-size: 12px;
    color: var(--text-muted);
}

/* FAQ Section */
.faq-section {
    margin-top: 48px;
    padding: 40px 0;
    border-top: 1px solid var(--border);
}

.faq-header {
    text-align: center;
    margin-bottom: 40px;
}

.faq-header h2 {
    font-size: 28px;
    margin-bottom: 12px;
}

.faq-header p {
    color: var(--text-secondary);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.faq-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    margin-bottom: 12px;
}

.faq-question span i {
    margin-right: 8px;
    color: var(--accent);
}

.faq-answer {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
    display: none;
    padding-top: 8px;
}

.faq-answer.show {
    display: block;
}

/* Footer */
.footer {
    border-top: 1px solid var(--border);
    margin-top: 40px;
    padding: 32px 24px;
    background: var(--bg-card);
}

.footer-content {
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
}

.footer-links a:hover {
    color: var(--accent);
}

.footer-copyright {
    font-size: 12px;
    color: var(--text-muted);
}

/* Mobile Drawer */
.mobile-drawer {
    position: fixed;
    top: 0;
    left: -100%;
    width: 85%;
    max-width: 320px;
    height: 100%;
    background: var(--bg-card);
    z-index: 1000;
    transition: left 0.3s ease;
    padding: 20px;
    overflow-y: auto;
    border-right: 1px solid var(--border);
}

.mobile-drawer.open {
    left: 0;
}

.drawer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.close-drawer {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
}

.drawer-nav a, .drawer-categories a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    color: var(--text-secondary);
    text-decoration: none;
}

.drawer-divider {
    height: 1px;
    background: var(--border);
    margin: 20px 0;
}

.drawer-auth {
    display: flex;
    gap: 12px;
    margin-top: 30px;
}

.drawer-auth button {
    flex: 1;
    padding: 10px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
}

.drawer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.4);
    z-index: 999;
    display: none;
}

.drawer-overlay.open {
    display: block;
}

/* Responsive */
@media (max-width: 1100px) {
    .layout-grid {
        grid-template-columns: 240px 1fr 260px;
        gap: 16px;
    }
}

@media (max-width: 900px) {
    .nav, .auth {
        display: none;
    }
    .hamburger {
        display: block;
    }
    .layout-grid {
        grid-template-columns: 1fr;
    }
    .sidebar-left, .sidebar-right {
        display: none;
    }
    .options-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .faq-grid {
        grid-template-columns: 1fr;
    }
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 640px) {
    .url-input-wrapper {
        flex-direction: column;
    }
    .btn-crawl, .btn-add-manual {
        padding: 12px;
        justify-content: center;
    }
    .tool-header h1 {
        font-size: 22px;
    }
}