/* ============================================
   ToolSparkr Design System
   ============================================ */

/* Skip Navigation */
.skip-nav {
    position: absolute;
    top: -100%;
    left: 16px;
    z-index: 10000;
    padding: 8px 16px;
    background: var(--primary);
    color: #fff;
    border-radius: 0 0 8px 8px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: top 200ms;
}
.skip-nav:focus {
    top: 0;
    color: #fff;
}

:root {
    --primary: #6366F1;
    --primary-dark: #4F46E5;
    --primary-light: #EEF2FF;
    --primary-gradient: linear-gradient(135deg, #6366F1, #8B5CF6);
    --bg: #FFFFFF;
    --bg-secondary: #F8FAFC;
    --text: #1E293B;
    --text-secondary: #64748B;
    --text-muted: #94A3B8;
    --border: #E2E8F0;
    --card-bg: #FFFFFF;
    --card-border: #E2E8F0;
    --card-shadow: 0 1px 3px rgba(0,0,0,0.06);
    --card-shadow-hover: 0 8px 25px rgba(99,102,241,0.15);
    --radius: 12px;
    --radius-sm: 8px;
    --nav-height: 64px;
    --max-width: 1200px;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

/* Blog dark theme */
.blog-page {
    --bg: #0F172A;
    --bg-secondary: #1E293B;
    --text: #F1F5F9;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    --border: #334155;
    --card-bg: #1E293B;
    --card-border: #334155;
    --card-shadow: 0 1px 3px rgba(0,0,0,0.2);
    --card-shadow-hover: 0 8px 25px rgba(99,102,241,0.2);
}

/* ============================================
   Reset & Base
   ============================================ */

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

html {
    height: 100%;
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    margin: 0;
    padding: 0;
}

#main-content { flex: 1 0 auto; }
.footer { flex-shrink: 0; margin-top: auto; }

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 200ms ease;
}

a:hover {
    color: var(--primary-dark);
}

img {
    max-width: 100%;
    height: auto;
}

code, pre {
    font-family: var(--font-mono);
}

/* ============================================
   Layout
   ============================================ */

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.container-narrow {
    max-width: 768px;
}

.section {
    padding: 4rem 0;
}

.section-alt {
    background: var(--bg-secondary);
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 2rem;
    text-align: center;
}

.section-cta {
    text-align: center;
    margin-top: 2.5rem;
}

.page-header {
    padding-bottom: 1rem;
}

.page-header h1 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* ============================================
   Navigation
   ============================================ */

.nav {
    position: sticky;
    top: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    height: var(--nav-height);
    z-index: 1000;
    transition: box-shadow 200ms ease;
}

.nav.scrolled {
    box-shadow: 0 1px 8px rgba(0,0,0,0.08);
}

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.ts-logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.blog-page .ts-logo-text {
    background: linear-gradient(135deg, #A78BFA, #C084FC);
    -webkit-background-clip: text;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 200ms ease;
}

.nav-link:hover {
    color: var(--text);
}

.nav-cta {
    margin-left: 0.5rem;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    min-width: 48px;
    min-height: 48px;
    align-items: center;
    justify-content: center;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all 200ms ease;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 200ms ease;
    text-decoration: none;
    line-height: 1.4;
}

.btn-primary {
    background: var(--primary-gradient);
    color: #fff;
    box-shadow: 0 2px 8px rgba(99,102,241,0.3);
}

.btn-primary:hover {
    color: #fff;
    box-shadow: 0 4px 16px rgba(99,102,241,0.4);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1.5px solid var(--primary);
}

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

.btn-lg {
    padding: 0.875rem 2rem;
    font-size: 1rem;
}

/* ============================================
   Hero
   ============================================ */

.hero {
    padding: 5rem 0 4rem;
    text-align: center;
    background: linear-gradient(180deg, var(--primary-light) 0%, var(--bg) 100%);
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.text-gradient {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

/* ============================================
   Search
   ============================================ */

.search-wrapper {
    max-width: 520px;
    margin: 0 auto;
    position: relative;
}

.search-bar {
    display: flex;
    align-items: center;
    background: var(--card-bg);
    border: 1.5px solid var(--border);
    border-radius: 50px;
    padding: 0.75rem 1.25rem;
    transition: all 200ms ease;
}

.search-bar:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}

.search-icon {
    color: var(--text-muted);
    flex-shrink: 0;
    margin-right: 0.75rem;
}

.search-input {
    flex: 1;
    border: none;
    outline: none;
    font-family: var(--font-sans);
    font-size: 1rem;
    color: var(--text);
    background: transparent;
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-clear {
    display: none;
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0 0.25rem;
    line-height: 1;
}

.search-clear.visible {
    display: block;
}

.search-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: 0 16px 48px rgba(0,0,0,0.12);
    z-index: 100;
    display: none;
    overflow: hidden;
}

.search-dropdown.open {
    display: block;
}

.search-result {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--text);
    text-decoration: none;
    border-bottom: 1px solid var(--border);
    transition: background 150ms ease;
}

.search-result:last-child {
    border-bottom: none;
}

.search-result:hover,
.search-result.active {
    background: var(--primary-light);
    color: var(--text);
}

.search-result-name {
    font-weight: 600;
    font-size: 0.9rem;
}

.search-result-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.search-result mark {
    background: #FEF3C7;
    color: inherit;
    border-radius: 2px;
    padding: 0 1px;
}

.search-no-results {
    padding: 1.5rem;
    text-align: center;
    color: var(--text-muted);
}

/* Tools search on /tools page */
.tools-search-wrapper {
    max-width: 400px;
    margin: 1.5rem 0;
}

.tools-search {
    width: 100%;
    padding: 0.625rem 1rem;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    color: var(--text);
    background: var(--card-bg);
    outline: none;
    transition: border-color 200ms ease, box-shadow 200ms ease;
}

.tools-search:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}

/* ============================================
   Filter Tabs
   ============================================ */

.filter-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.filter-tab {
    padding: 0.5rem 1rem;
    border: 1.5px solid var(--border);
    border-radius: 50px;
    background: var(--card-bg);
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 200ms ease;
}

.filter-tab:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.filter-tab.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

/* ============================================
   Tool Cards
   ============================================ */

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.25rem;
}

.tool-card {
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    box-shadow: var(--card-shadow);
    text-decoration: none;
    color: var(--text);
    transition: all 200ms ease;
}

.tool-card:hover {
    box-shadow: var(--card-shadow-hover);
    border-color: var(--primary);
    transform: translateY(-2px);
    color: var(--text);
}

.tool-card-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    color: var(--primary);
}

.tool-card-icon svg {
    width: 22px;
    height: 22px;
}

.tool-card-name {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.tool-card-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    flex: 1;
    margin-bottom: 0.75rem;
}

.tool-card-badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--primary);
    background: var(--primary-light);
    border-radius: 50px;
    align-self: flex-start;
}

.tool-card[style*="display: none"] {
    display: none !important;
}

.no-results {
    text-align: center;
    color: var(--text-muted);
    padding: 2rem;
}

/* ============================================
   Categories Grid
   ============================================ */

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1rem;
}

.category-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.5rem 1rem;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--text);
    transition: all 200ms ease;
    text-align: center;
}

.category-card:hover {
    border-color: var(--primary);
    box-shadow: var(--card-shadow-hover);
    transform: translateY(-2px);
    color: var(--text);
}

.category-icon {
    width: 32px;
    height: 32px;
    color: var(--primary);
    margin-bottom: 0.75rem;
}

.category-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.category-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ============================================
   Features
   ============================================ */

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    text-align: center;
    padding: 2rem 1.5rem;
}

.feature-icon {
    width: 40px;
    height: 40px;
    color: var(--primary);
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* ============================================
   CTA Banner
   ============================================ */

.cta-section {
    padding: 3rem 0;
}

.cta-banner {
    background: var(--primary-gradient);
    color: #fff;
    padding: 3rem 2rem;
    border-radius: var(--radius);
    text-align: center;
}

.cta-banner h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.cta-banner p {
    font-size: 1.05rem;
    opacity: 0.9;
    margin-bottom: 1.5rem;
}

.cta-banner .btn-primary {
    background: #fff;
    color: var(--primary);
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.cta-banner .btn-primary:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}

/* ============================================
   Tool Page
   ============================================ */

.breadcrumb-nav {
    background: var(--bg-secondary);
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
}

.breadcrumb {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    font-size: 0.85rem;
}

.breadcrumb li::after {
    content: "/";
    margin-left: 0.5rem;
    color: var(--text-muted);
}

.breadcrumb li:last-child::after {
    content: "";
}

.breadcrumb li a {
    color: var(--text-secondary);
}

.breadcrumb li a:hover {
    color: var(--primary);
}

.breadcrumb li.active {
    color: var(--text);
    font-weight: 500;
}

.tool-header {
    padding: 2.5rem 0 1.5rem;
    background: linear-gradient(135deg, var(--primary-light), var(--bg-secondary));
}

.tool-header h1 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.tool-description {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.tool-workspace {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 24px;
    min-height: 300px;
    margin-bottom: 24px;
}
.tool-input-section { margin-bottom: 16px; }
.tool-input-section label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text);
}
.tool-input-section textarea,
.tool-input-section input[type="text"],
.tool-input-section input[type="number"],
.tool-input-section input[type="url"] {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--text);
    background: var(--card-bg);
    transition: border-color 200ms ease, box-shadow 200ms ease;
}
.tool-input-section textarea {
    min-height: 150px;
    resize: vertical;
}
.tool-input-section textarea:focus,
.tool-input-section input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}
.tool-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}
.tool-output-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px;
}
.tool-output-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--text-secondary);
}
.tool-output-content {
    font-family: var(--font-mono);
    font-size: 14px;
    word-break: break-all;
    white-space: pre-wrap;
}
.tool-options {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 16px;
    align-items: center;
}
.tool-option {
    display: flex;
    align-items: center;
    gap: 6px;
}
.tool-option label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    cursor: pointer;
    margin-bottom: 0;
}
.tool-option select {
    padding: 6px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 14px;
    color: var(--text);
    background: var(--card-bg);
}
.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8rem;
}
.btn-copy-ok {
    color: #059669 !important;
    border-color: #059669 !important;
}
.strength-bar {
    height: 4px;
    border-radius: 2px;
    margin-top: 8px;
    background: var(--border);
    overflow: hidden;
}
.strength-fill {
    height: 100%;
    border-radius: 2px;
    transition: all 300ms ease;
}
.strength-weak { background: #EF4444; width: 25%; }
.strength-medium { background: #F59E0B; width: 50%; }
.strength-strong { background: #10B981; width: 75%; }
.strength-very-strong { background: #059669; width: 100%; }
.strength-label {
    font-size: 12px;
    margin-top: 4px;
    font-weight: 500;
}
.color-preview {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    flex-shrink: 0;
}
.color-row {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 12px;
}
.color-formats {
    display: grid;
    gap: 8px;
    flex: 1;
}
.color-format-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 14px;
}
.slider-group {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}
.slider-group label {
    min-width: 30px;
    font-weight: 600;
    font-size: 14px;
}
.slider-group input[type="range"] {
    flex: 1;
    accent-color: var(--primary);
}
.slider-group input[type="number"] {
    width: 70px;
    padding: 4px 8px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 14px;
    text-align: center;
}
.uuid-list {
    list-style: none;
    padding: 0;
}
.uuid-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border);
    font-family: var(--font-mono);
    font-size: 14px;
}
.uuid-list li:last-child { border-bottom: none; }
.morse-chart {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 4px;
    margin-top: 12px;
    font-family: var(--font-mono);
    font-size: 12px;
}
.morse-chart-item {
    padding: 4px 8px;
    background: var(--bg-secondary);
    border-radius: 4px;
    text-align: center;
}
.toggle-group {
    display: flex;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: 16px;
}
.toggle-btn {
    flex: 1;
    padding: 8px 16px;
    border: none;
    background: var(--card-bg);
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 200ms ease;
}
.toggle-btn.active {
    background: var(--primary);
    color: #fff;
}
.download-btn {
    margin-top: 12px;
}

.tool-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 250px;
    color: var(--text-muted);
    gap: 1rem;
}

.tool-placeholder h3 {
    color: var(--text);
}

/* Steps */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.5rem;
}

.step-card {
    text-align: center;
    padding: 1.5rem;
}

.step-number {
    width: 48px;
    height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    color: #fff;
    font-weight: 700;
    font-size: 1.25rem;
    border-radius: 50%;
    margin-bottom: 1rem;
}

.step-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.step-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* FAQ */
.faq-list {
    max-width: 768px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    margin-bottom: 0.75rem;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    background: var(--card-bg);
    border: none;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    text-align: left;
    transition: background 200ms ease;
}

.faq-question::after {
    content: "+";
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--text-muted);
    transition: transform 200ms ease;
}

.faq-item.open .faq-question::after {
    content: "\2212";
}

.faq-question:hover {
    background: var(--bg-secondary);
}

.faq-answer {
    display: none;
    padding: 0 1.25rem 1rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.faq-item.open .faq-answer {
    display: block;
}

/* ============================================
   Blog (dark theme handled by .blog-page)
   ============================================ */

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

.blog-card {
    padding: 1.5rem;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--text);
    transition: all 200ms ease;
}

.blog-card:hover {
    border-color: var(--primary);
    box-shadow: var(--card-shadow-hover);
    transform: translateY(-2px);
    color: var(--text);
}

.blog-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.blog-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.blog-content {
    font-size: 1.05rem;
    line-height: 1.8;
}

.blog-content h2 {
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.blog-content p {
    margin-bottom: 1rem;
}

.blog-content code {
    background: var(--bg-secondary);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.9em;
}

.blog-content pre {
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: var(--radius-sm);
    overflow-x: auto;
    margin-bottom: 1.5rem;
}

/* ============================================
   Prose (static pages)
   ============================================ */

.prose h2 {
    font-size: 1.4rem;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}

.prose p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.prose a {
    color: var(--primary);
    text-decoration: underline;
}

/* ============================================
   Footer
   ============================================ */

.footer {
    background: #0F172A;
    color: #94A3B8;
    padding: 3rem 0 1.5rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-brand .ts-logo-text {
    font-size: 1.25rem;
    display: inline-block;
    margin-bottom: 0.5rem;
}

.footer-tagline {
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-col h4 {
    color: #F1F5F9;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.footer-col a {
    display: block;
    color: #94A3B8;
    font-size: 0.875rem;
    padding: 0.2rem 0;
    transition: color 200ms ease;
}

.footer-col a:hover {
    color: #F1F5F9;
}

.footer-bottom {
    border-top: 1px solid #334155;
    padding-top: 1.5rem;
    text-align: center;
    font-size: 0.85rem;
}

/* ============================================
   Back to Top
   ============================================ */

.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--primary-gradient);
    color: #fff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 200ms ease;
    box-shadow: 0 2px 12px rgba(99,102,241,0.3);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(99,102,241,0.4);
}

/* ============================================
   Utilities
   ============================================ */

.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section {
        padding: 2.5rem 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: var(--bg);
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        padding: 1rem 1.5rem;
        gap: 0;
        box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    }

    .nav-links.open {
        display: flex;
    }

    .nav-link {
        padding: 0.75rem 0;
        min-height: 48px;
        display: flex;
        align-items: center;
    }

    .nav-cta {
        margin: 0.5rem 0;
        margin-left: 0;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1.5rem;
    }

    .footer-brand {
        grid-column: 1 / -1;
    }

    .tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }

    .categories-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }

    .tool-workspace {
        padding: 1.25rem;
    }

    input, textarea, select, .search-input, .tools-search {
        font-size: 16px !important;
    }

    .btn {
        min-height: 48px;
    }

    /* Contact form responsive */
    [style*="grid-template-columns:1fr 320px"] {
        grid-template-columns: 1fr !important;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.6rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .tools-grid {
        grid-template-columns: 1fr;
    }

    .steps-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Blog System (R5)
   ============================================ */

.blog-page { background-color: #0F172A; color: #F1F5F9; }
.blog-page .nav { background: #0F172A; border-bottom-color: #1E293B; }
.blog-page .footer { background: #0F172A; border-top: 1px solid #1E293B; }

.blog-layout {
    display: grid;
    grid-template-columns: 1fr 240px;
    gap: 2rem;
}

.blog-post-layout {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.blog-post-header {
    padding: 2.5rem 0 1rem;
}

/* Blog content */
.blog-content { max-width: 720px; line-height: 1.8; font-size: 17px; }
.blog-content h2 { color: #E2E8F0; margin-top: 48px; margin-bottom: 16px; font-size: 24px; }
.blog-content h3 { color: #CBD5E1; margin-top: 32px; margin-bottom: 12px; font-size: 20px; }
.blog-content p { margin-bottom: 16px; color: #CBD5E1; }
.blog-content a { color: #818CF8; text-decoration: underline; }
.blog-content a:hover { color: #A78BFA; }
.blog-content code { background: #1E293B; padding: 2px 6px; border-radius: 4px; font-family: var(--font-mono); font-size: 14px; color: #E2E8F0; }
.blog-content pre { background: #1E293B; padding: 16px; border-radius: 8px; overflow-x: auto; margin-bottom: 24px; border: 1px solid #334155; }
.blog-content pre code { background: none; padding: 0; }
.blog-content blockquote { border-left: 3px solid #6366F1; padding-left: 16px; color: #94A3B8; font-style: italic; margin: 24px 0; }
.blog-content img { max-width: 100%; border-radius: 8px; margin: 24px 0; }
.blog-content table { width: 100%; border-collapse: collapse; margin: 24px 0; }
.blog-content th, .blog-content td { padding: 10px 14px; border: 1px solid #334155; text-align: left; }
.blog-content th { background: #1E293B; font-weight: 600; }
.blog-content ul, .blog-content ol { margin-bottom: 16px; padding-left: 24px; color: #CBD5E1; }
.blog-content li { margin-bottom: 6px; }

/* TL;DR and Takeaways cards */
.geo-tldr, .tldr-card { border-left: 4px solid #3B82F6; background: #1E293B; padding: 16px 20px; border-radius: 0 8px 8px 0; margin: 24px 0; }
.geo-takeaways, .takeaways-card { border-left: 4px solid #10B981; background: #1E293B; padding: 16px 20px; border-radius: 0 8px 8px 0; margin: 24px 0; }

/* FAQ accordion */
.geo-faq-question, .geo-faq-q { cursor: pointer; padding: 12px 16px; background: #1E293B; border-radius: 8px; margin-bottom: 8px; display: flex; justify-content: space-between; align-items: center; font-weight: 500; transition: background 200ms; color: #E2E8F0; }
.geo-faq-question:hover, .geo-faq-q:hover { background: #334155; }
.geo-faq-answer, .geo-faq-a { display: none; padding: 12px 16px; color: #94A3B8; line-height: 1.7; }
.geo-faq-question.open + .geo-faq-answer, .geo-faq-q.open + .geo-faq-a { display: block; }

/* Reading progress bar */
.reading-progress { position: fixed; top: 0; left: 0; height: 3px; width: 0; background: linear-gradient(90deg, #6366F1, #8B5CF6, #A78BFA); z-index: 9999; transition: width 100ms; }

/* TOC sidebar */
.toc-sidebar { position: sticky; top: 80px; max-height: calc(100vh - 100px); overflow-y: auto; }
.toc-sidebar a { display: block; padding: 6px 12px; color: #94A3B8; text-decoration: none; font-size: 14px; border-left: 2px solid transparent; transition: all 200ms; }
.toc-sidebar a:hover, .toc-sidebar a.active { color: #818CF8; border-left-color: #6366F1; }
.toc-sidebar a.toc-h3 { padding-left: 24px; font-size: 13px; }

/* Blog cards (dark theme) */
.blog-page .blog-card { background: #1E293B; border: 1px solid #334155; border-radius: 12px; overflow: hidden; transition: transform 200ms, box-shadow 200ms; }
.blog-page .blog-card:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(0,0,0,0.3); border-color: #4F46E5; }
.blog-card-image { width: 100%; height: 200px; object-fit: cover; }
.blog-card-body { padding: 20px; }
.blog-card-title { color: #F1F5F9; font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.blog-card-desc { color: #94A3B8; font-size: 14px; line-height: 1.5; margin-bottom: 12px; }
.blog-card-meta { color: #64748B; font-size: 13px; }
.category-badge { display: inline-block; padding: 2px 10px; border-radius: 12px; font-size: 12px; font-weight: 500; background: rgba(99,102,241,0.15); color: #818CF8; margin-bottom: 8px; }

/* Pagination */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 40px; }
.pagination a, .pagination span { padding: 8px 16px; border-radius: 8px; font-size: 14px; }
.pagination a { background: #1E293B; color: #94A3B8; text-decoration: none; border: 1px solid #334155; }
.pagination a:hover { background: #334155; color: #F1F5F9; }
.pagination .active { background: #6366F1; color: white; border: none; }

/* Blog sidebar */
.blog-sidebar { padding-top: 1rem; }
.sidebar-section { margin-bottom: 2rem; }
.sidebar-section h4 { color: #E2E8F0; font-size: 14px; font-weight: 600; margin-bottom: 12px; text-transform: uppercase; letter-spacing: 0.05em; }
.sidebar-link { display: block; padding: 6px 0; color: #94A3B8; text-decoration: none; font-size: 14px; transition: color 200ms; }
.sidebar-link:hover { color: #818CF8; }

/* GEO classes from old site */
.geo-comparison { background: #1E293B; border-radius: 8px; padding: 16px; margin: 24px 0; border: 1px solid #334155; }
.geo-code-tabs { margin: 24px 0; }
.geo-faq-item { margin-bottom: 4px; }

@media (max-width: 768px) {
    .blog-layout { grid-template-columns: 1fr; }
    .blog-sidebar { display: none; }
    .blog-post-layout { grid-template-columns: 1fr; }
    .toc-sidebar { position: static; max-height: none; margin-bottom: 1.5rem; padding: 12px; background: #1E293B; border-radius: 8px; }
    .blog-content { font-size: 16px; }
}

/* ============================================
   SEO Pages (R6)
   ============================================ */

.seo-content { line-height: 1.8; font-size: 16px; }
.seo-content h2 { margin-top: 32px; margin-bottom: 12px; }
.seo-content h3 { margin-top: 24px; margin-bottom: 8px; }
.seo-content p { margin-bottom: 16px; color: var(--text-secondary); }
.seo-content ul, .seo-content ol { margin-bottom: 16px; padding-left: 24px; color: var(--text-secondary); }
.seo-content li { margin-bottom: 6px; }
.seo-content code { background: var(--bg-secondary); padding: 2px 6px; border-radius: 4px; font-family: var(--font-mono); font-size: 14px; }
.seo-content pre { background: var(--bg-secondary); padding: 16px; border-radius: 8px; overflow-x: auto; margin-bottom: 24px; border: 1px solid var(--border); }
.seo-content pre code { background: none; padding: 0; }
.seo-content table { width: 100%; border-collapse: collapse; margin: 24px 0; }
.seo-content th, .seo-content td { padding: 10px 14px; border: 1px solid var(--border); text-align: left; }
.seo-content th { background: var(--bg-secondary); font-weight: 600; }
.seo-content a { color: var(--primary); text-decoration: underline; }
.seo-content img { max-width: 100%; border-radius: 8px; margin: 16px 0; }
.cta-card { transition: transform 200ms; }
.cta-card:hover { transform: translateY(-2px); }

/* ============================================
   Loading Spinner (R7)
   ============================================ */

.tool-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 40px;
    color: var(--text-secondary);
}
.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ============================================
   Accessibility (R7)
   ============================================ */

*:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(99,102,241,0.15);
}

/* ============================================
   GSAP animation initial states (R7)
   ============================================ */

.gsap-fade-up {
    opacity: 0;
    transform: translateY(30px);
}

/* ============================================
   Print (R7 updated)
   ============================================ */

@media print {
    .nav, .footer, .back-to-top, .cta-section, .search-wrapper,
    .reading-progress, .toc-sidebar, .tool-actions, .filter-tabs,
    .skip-nav, .pagination { display: none !important; }

    body { color: #000 !important; background: #fff !important; }
    .blog-page { background: #fff !important; color: #000 !important; }
    .blog-content, .blog-content p, .blog-content h2, .blog-content h3 { color: #000 !important; }
    a { color: #000 !important; text-decoration: underline !important; }
    .tool-workspace { border: 1px solid #ccc; }
    .blog-card, .tool-card { box-shadow: none; border: 1px solid #ccc; }
}