/* ==========================================================================
   KUBOIDE - Main Stylesheet
   ========================================================================== */

/* ==========================================================================
   1. CSS VARIABLES
   ========================================================================== */
:root {
    /* Colors */
    --color-accent: #21A4F5;
    --color-bg: #000000;
    --color-bg-alternate: #0c0c0c;
    --color-border: #18181b;
    --color-text: #fafafa;
    --color-text-mid: #c3c3c3;
    --color-text-muted: #8b8b8b;
    
    /* Spacing */
    --spacing-xs: 0.375rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 12px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.35s ease-out;
    
    /* Container */
    --container-max: 1300px;
    
    /* Font Sizes */
    --font-sm: 0.8125rem;
    --font-base: 0.875rem;
    --font-lg: 1rem;
    --font-xl: 1.375rem;
    --font-2xl: 1.625rem;
    --font-3xl: 2.25rem;
    --font-4xl: 4.5rem;
}

/* ==========================================================================
   2. RESET & BASE
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 100px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ==========================================================================
   3. FONT FACES
   ========================================================================== */
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('../fonts/inter-latin-400.woff2') format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 500;
    font-display: swap;
    src: url('../fonts/inter-latin-500.woff2') format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ==========================================================================
   4. TYPOGRAPHY
   ========================================================================== */
h1 {
    font-size: var(--font-4xl);
    font-weight: 500;
    line-height: 1.1;
    color: var(--color-text);
    letter-spacing: -0.03em;
}

h2 {
    font-size: var(--font-3xl);
    font-weight: 500;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

h3 {
    font-size: var(--font-xl);
    font-weight: 500;
    color: var(--color-text-mid);
    letter-spacing: -0.02em;
}

h4 {
    font-size: var(--font-lg);
    font-weight: 500;
    color: var(--color-text-muted);
}

h5 {
    font-size: var(--font-base);
    font-weight: 500;
    color: var(--color-text-muted);
}

h6 {
    font-size: var(--font-base);
    font-weight: 500;
    color: var(--color-text-muted);
}

p {
    font-size: var(--font-lg);
    color: var(--color-text-muted);
    line-height: 1.7;
}

ul, ol {
    font-size: var(--font-lg);
    color: var(--color-text-muted);
    line-height: 1.5;
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

li {
    margin-bottom: 0.5rem;
}

li strong {
    color: var(--color-text-muted);
}

article section {
    margin-bottom: var(--spacing-xl);
}

article section:last-child {
    margin-bottom: 0;
}

table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: var(--spacing-md) 0;
    font-size: var(--font-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

th, td {
    text-align: left;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--color-border);
    border-right: 1px solid var(--color-border);
}

th:last-child,
td:last-child {
    border-right: none;
}

tr:last-child td {
    border-bottom: none;
}

th {
    font-weight: 500;
    color: var(--color-text);
    background: var(--color-bg-alternate);
}

td {
    color: var(--color-text-muted);
}

tr:hover td {
    background: var(--color-bg-alternate);
}

/* ==========================================================================
   TYPOGRAPHY UTILITIES
   ========================================================================== */
.text-primary {
    font-size: var(--font-2xl);
    color: var(--color-text-muted);
    line-height: 1.3;
    font-weight: 400;
}

.text-secondary {
    font-size: var(--font-xl);
    color: var(--color-text-muted);
    line-height: 1.3;
    font-weight: 400;
}

.text-tertiary {
    font-size: var(--font-lg);
    color: var(--color-text-muted);
    line-height: 1.7;
    font-weight: 400;
}

.text-quaternary {
    font-size: var(--font-base);
    color: var(--color-text-muted);
    line-height: 1.5;
    font-weight: 400;
}

/* ==========================================================================
   5. UTILITIES
   ========================================================================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ==========================================================================
   CONTAINER SYSTEM
   ========================================================================== */
.container-1-col,
.container-2-cols,
.container-3-cols {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
}

.container-2-cols {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.container-3-cols {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

/* ==========================================================================
   6. BUTTONS
   ========================================================================== */

/* Base button styles */
.button-primary,
.button-secondary,
.button-link-primary,
.button-link-secondary {
    padding: 0.625rem 0.875rem;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--font-base);
    font-weight: 500;
    line-height: 1.5;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    border: 1px solid var(--color-accent);
    -webkit-appearance: none;
    appearance: none;
}

/* Primary style (blue background) */
.button-primary,
.button-link-primary {
    background: var(--color-accent);
    color: var(--color-bg);
}

.button-primary:hover,
.button-link-primary:hover {
    background: var(--color-bg);
    color: var(--color-accent);
}

/* Secondary style (black background) */
.button-secondary,
.button-link-secondary {
    background: var(--color-bg);
    color: var(--color-accent);
}

.button-secondary:hover,
.button-link-secondary:hover {
    background: var(--color-accent);
    color: var(--color-bg);
}

/* Button icons */
.button-primary svg,
.button-secondary svg,
.button-link-primary svg,
.button-link-secondary svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

/* Small button variant (for header) */
.button-link-primary-sm,
.button-link-secondary-sm {
    padding: 0.4375rem 0.75rem;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--font-sm);
    font-weight: 500;
    line-height: 1.5;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    border: 1px solid var(--color-accent);
    -webkit-appearance: none;
    appearance: none;
}

.button-link-primary-sm {
    background: var(--color-accent);
    color: var(--color-bg);
}

.button-link-primary-sm:hover {
    background: var(--color-bg);
    color: var(--color-accent);
}

.button-link-secondary-sm {
    background: var(--color-bg);
    color: var(--color-accent);
}

.button-link-secondary-sm:hover {
    background: var(--color-accent);
    color: var(--color-bg);
}

.button-link-primary-sm svg,
.button-link-secondary-sm svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

/* ==========================================================================
   7. SECTIONS
   ========================================================================== */
.section {
    padding: var(--spacing-xl) var(--spacing-md);
}

.section--gray {
    background: var(--color-bg-alternate);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-header.narrow {
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.section-header h2 {
    margin-bottom: var(--spacing-sm);
}

.section-header p {
    max-width: 500px;
    margin: 0 auto;
}

/* Section header in 2-cols layout (e.g. FAQ) */
.container-2-cols > .section-header {
    text-align: left;
    margin-bottom: 0;
    position: sticky;
    top: 6rem;
}

.container-2-cols > .section-header p {
    margin: 0;
}

/* ==========================================================================
   8. CARDS
   ========================================================================== */
.card {
    background: var(--color-bg-alternate);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

/* Cards with icon: grid layout (icon + title on row 1, description on row 2) */
.card:has(.card-icon) {
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
    column-gap: var(--spacing-sm);
    align-items: center;
}

.card-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(33, 164, 245, 0.1);
    color: var(--color-accent);
    grid-row: 1;
    grid-column: 1;
}

.card:has(.card-icon) h3 {
    grid-row: 1;
    grid-column: 2;
}

.card:has(.card-icon) p {
    grid-row: 2;
    grid-column: 1 / -1;
    margin-top: var(--spacing-sm);
}

.card-icon svg {
    width: 20px;
    height: 20px;
}

.card-icon img {
    height: 20px;
    width: auto;
    filter: brightness(0) saturate(100%) invert(56%) sepia(69%) saturate(2056%) hue-rotate(176deg) brightness(99%) contrast(93%);
}

.card-icon img.icon-sm {
    height: 16px;
}

.card-icon img.icon-xs {
    height: 12px;
}

/* Card Testimonial Content */
.card-quote {
    margin-bottom: 1.25rem;
}

.card-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.card-author span {
    display: block;
    font-size: var(--font-sm);
    font-weight: 500;
    color: var(--color-text-mid);
}

/* Card Blog: image-top layout for blog cards */
a.card-blog {
    display: flex;
    flex-direction: column;
    padding: 0;
    text-decoration: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

a.card-blog:hover {
    border-color: var(--color-accent);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.card-blog-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    background: var(--color-bg);
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    overflow: hidden;
}

.card-blog-image picture {
    display: block;
    line-height: 0;
    width: 100%;
    height: 100%;
}

.card-blog-image svg {
    width: 48px;
    height: 48px;
    opacity: 0.4;
}

.card-blog-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card-blog-content {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    flex: 1;
}

.card-blog-category {
    font-size: var(--font-xs);
    font-weight: 500;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-xs);
}

.card-blog-content h2 {
    font-size: var(--font-xl);
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
}

.card-blog-content h2 svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    margin-top: 0.25rem;
    opacity: 0;
    transform: translateX(-4px);
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

a.card-blog:hover .card-blog-content h2 svg {
    opacity: 1;
    transform: translateX(0);
}

.card-blog-excerpt {
    font-size: var(--font-sm);
    color: var(--color-text-muted);
    line-height: 1.5;
    margin-bottom: var(--spacing-sm);
    flex: 1;
}

.card-blog-meta {
    font-size: var(--font-xs);
    color: var(--color-text-muted);
    margin-top: auto;
}

/* ==========================================================================
   9. SIDEBAR SEARCH
   ========================================================================== */
.sidebar-search {
    position: relative;
    margin-bottom: var(--spacing-md);
}

.sidebar-search input {
    width: 100%;
    padding: 0.5rem 2rem 0.5rem 2.25rem;
    background: var(--color-bg-alternate);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: var(--font-sm);
    font-family: inherit;
}

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

.sidebar-search input:focus {
    outline: none;
    border-color: var(--color-accent);
}

.sidebar-search > svg {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    color: var(--color-text-muted);
    pointer-events: none;
}

.sidebar-search-clear {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    padding: 0.25rem;
    cursor: pointer;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--transition-fast);
}

.sidebar-search-clear:hover {
    color: var(--color-text);
}

.sidebar-search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-top: 0.5rem;
    background: var(--color-bg-alternate);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    max-height: 320px;
    overflow-y: auto;
    z-index: 100;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.sidebar-search-result {
    display: block;
    padding: 0.75rem;
    border-bottom: 1px solid var(--color-border);
    text-decoration: none;
    transition: background var(--transition-fast);
}

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

.sidebar-search-result:hover {
    background: var(--color-bg);
}

.sidebar-search-result-title {
    font-size: var(--font-sm);
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 0.25rem;
}

.sidebar-search-result-category {
    font-size: var(--font-xs);
    color: var(--color-accent);
    margin-bottom: 0.25rem;
}

.sidebar-search-result-excerpt {
    font-size: var(--font-xs);
    color: var(--color-text-muted);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.sidebar-search-loading,
.sidebar-search-empty {
    padding: 1rem;
    text-align: center;
    color: var(--color-text-muted);
    font-size: var(--font-sm);
}

/* ==========================================================================
   10. FEATURES (text + image layout)
   ========================================================================== */
.feature {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.feature--reverse {
    grid-template-columns: 1.2fr 1fr;
}

.feature--reverse > div:first-child {
    order: 2;
}

.feature--reverse > img {
    order: 1;
}

.feature h2 {
    margin-bottom: 0.875rem;
}

.feature h3 {
    margin: 1rem 0 0.25rem 0;
}

.feature h3:first-of-type {
    margin-top: 0;
}

.feature p {
    margin-bottom: 0.5rem;
}

/* ==========================================================================
   10. HEADER
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.875rem var(--spacing-md);
    max-width: var(--container-max);
    margin: 0 auto;
    position: relative;
}

.header-buttons {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 32px;
    width: auto;
}

.nav {
    display: flex;
    align-items: center;
    gap: 1.75rem;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.nav a {
    color: var(--color-text-muted);
    font-size: var(--font-base);
    font-weight: 400;
    transition: color var(--transition-fast);
}

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

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

.nav span.active {
    color: var(--color-accent);
    font-size: var(--font-base);
    font-weight: 400;
    cursor: default;
}

/* ==========================================================================
   11. HERO
   ========================================================================== */
.hero {
    text-align: center;
    max-width: 720px;
    margin: 0 auto;
    padding: 5rem 0 var(--spacing-lg);
}

.hero h1 {
    margin-bottom: 1.25rem;
}

.hero p {
    max-width: 480px;
    margin: 0 auto 1.75rem;
}

/* Responsive Image */
.img-responsive {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-lg);
}

/* ==========================================================================
   12. ACCORDION
   ========================================================================== */
.accordion {
    width: 100%;
}

.accordion-item {
    border-bottom: 1px solid var(--color-border);
}

.accordion-item:first-child {
    border-top: 1px solid var(--color-border);
}

.accordion-title {
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 0;
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    color: var(--color-text-mid);
}

.accordion-title svg {
    width: 16px;
    height: 16px;
    color: var(--color-text-muted);
    flex-shrink: 0;
    margin-left: 1rem;
    transition: transform var(--transition-normal);
}

.accordion-item.active .accordion-title svg {
    transform: rotate(180deg);
}

.accordion-description {
    display: grid;
    grid-template-rows: 0fr;
    overflow: hidden;
    transition: grid-template-rows var(--transition-normal), padding var(--transition-normal);
}

.accordion-description > p {
    overflow: hidden;
}

.accordion-item.active .accordion-description {
    grid-template-rows: 1fr;
    padding-bottom: 1.25rem;
}

/* ==========================================================================
   13. FOOTER CTA
   ========================================================================== */
.footer-cta {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md) 4rem;
    background: var(--color-bg-alternate);
}

/* ==========================================================================
   14. FOOTER
   ========================================================================== */
.footer {
    border-top: 1px solid var(--color-border);
}

.footer-inner {
    padding: 2rem var(--spacing-md);
    max-width: var(--container-max);
    margin: 0 auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-links {
    display: flex;
    gap: var(--spacing-md);
}

.footer-links a {
    color: var(--color-text-muted);
    font-size: var(--font-sm);
    transition: color var(--transition-fast);
}

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

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

/* ==========================================================================
   15. MOBILE MENU
   ========================================================================== */
/* Hamburger Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    padding: 0;
    background: transparent;
    border: none;
    cursor: pointer;
    gap: 5px;
}

.hamburger-line {
    display: block;
    width: 20px;
    height: 2px;
    background-color: var(--color-text);
    transition: all 0.3s ease;
}

/* Mobile Menu Overlay */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu-close {
    position: absolute;
    top: 0.875rem;
    right: var(--spacing-md);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--color-text);
    transition: color var(--transition-fast);
}

.mobile-menu-close:hover {
    color: var(--color-accent);
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    padding: 6rem var(--spacing-md) var(--spacing-md) var(--spacing-lg);
    gap: 0.5rem;
}

.mobile-nav a {
    font-size: var(--font-3xl);
    font-weight: 500;
    color: var(--color-text);
    transition: color var(--transition-fast);
    letter-spacing: -0.02em;
}

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

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

.mobile-nav span.active {
    font-size: var(--font-3xl);
    font-weight: 500;
    color: var(--color-accent);
    letter-spacing: -0.02em;
    cursor: default;
}

/* Body scroll lock when menu is open */
body.menu-open {
    overflow: hidden;
}

/* ==========================================================================
   16. LEGAL PAGES (Privacy Policy, Cookie Policy, Terms)
   ========================================================================== */

.legal-nav {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding-bottom: var(--spacing-lg);
}

.legal-nav-title {
    font-size: var(--font-sm);
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 0.75rem;
}

.legal-nav a {
    font-size: var(--font-sm);
    color: var(--color-text-muted);
    padding: 0.375rem 0;
    transition: color var(--transition-fast);
    line-height: 1.4;
}

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

.legal-updated {
    font-size: var(--font-sm);
    color: var(--color-text-muted);
    margin-top: var(--spacing-lg);
    padding-bottom: var(--spacing-xl);
}

/* Legal Address */
.legal-address {
    font-style: normal;
    font-size: var(--font-base);
    color: var(--color-text-muted);
    line-height: 1.8;
    margin: 1rem 0;
    padding: 1rem;
    background: var(--color-bg-alternate);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.legal-address a {
    color: var(--color-accent);
}

/* ==========================================================================
   17. CONTENT PAGES (Docs, Blog, Legal, etc.)
   ========================================================================== */

/* Content Page Layout - shared base for all non-homepage pages */
.content-page {
    padding-top: 6rem;
    min-height: 100vh;
}

/* Page Header (shared for non-homepage pages) */
.page-header {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.page-header h1 {
    font-size: var(--font-3xl);
    margin-bottom: 0.5rem;
}

.page-header .text-secondary {
    font-size: var(--font-xl);
    color: var(--color-text-muted);
    line-height: 1.3;
    font-weight: 400;
}

/* Breadcrumb (shared) */
.breadcrumb {
    font-size: var(--font-sm);
    color: var(--color-text-muted);
    margin-top: var(--spacing-md);
    text-align: left;
}

.breadcrumb a {
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

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

.breadcrumb-sep {
    margin: 0 0.5rem;
    color: var(--color-border);
}

/* ==================== Page Layouts ==================== */

/* 2 columns: Sidebar + Content */
.layout-2-cols {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: var(--spacing-lg);
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-md) var(--spacing-xl);
}

/* 3 columns: Sidebar + Content + TOC */
.layout-3-cols {
    display: grid;
    grid-template-columns: 240px 1fr 200px;
    gap: var(--spacing-lg);
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-md) var(--spacing-xl);
}

/* ==================== Sidebar (Shared) ==================== */

.sidebar {
    position: sticky;
    top: 6rem;
    height: fit-content;
    max-height: calc(100vh - 7rem);
    overflow-y: auto;
}

/* ==================== Sidebar Menu (Shared: Docs & Blog) ==================== */

/* Sidebar Category */
.sidebar-category {
    display: flex;
    flex-direction: column;
}

.sidebar-category-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.5rem 0;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: var(--font-base);
    font-weight: 500;
    color: var(--color-text);
    text-decoration: none;
}

.sidebar-category-title:hover {
    color: var(--color-accent);
}

.sidebar-category-title.active {
    color: var(--color-accent);
}

/* Sidebar Icon */
.sidebar-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    color: var(--color-text-muted);
}

/* Sidebar Category Name */
.sidebar-category-name {
    flex: 1;
}

/* Collapse Icon (chevron) */
.sidebar-collapse-icon {
    width: 16px;
    height: 16px;
    margin-left: auto;
    transition: transform var(--transition-fast);
    color: var(--color-text-muted);
}

.sidebar-category.is-active > .sidebar-category-title .sidebar-collapse-icon,
.sidebar-subcategory.is-active > .sidebar-subcategory-title .sidebar-collapse-icon {
    transform: rotate(180deg);
}

/* Sidebar Category Content (collapsible area) */
.sidebar-category-content {
    display: none;
    flex-direction: column;
    padding-left: 0.5rem;
}

.sidebar-category-content.is-open {
    display: flex;
}

/* Sidebar Subcategory Styles */
.sidebar-subcategory {
    display: flex;
    flex-direction: column;
    margin-top: 0.25rem;
}

.sidebar-subcategory-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.375rem 0 0.375rem 0.5rem;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: var(--font-base);
    font-weight: 400;
    color: var(--color-text-muted);
    text-decoration: none;
}

.sidebar-subcategory-title:hover {
    color: var(--color-text);
}

.sidebar-subcategory-title.active {
    color: var(--color-accent);
}

/* Sidebar Links */
.sidebar-category-links {
    display: flex;
    flex-direction: column;
}

.sidebar-link {
    font-size: var(--font-base);
    color: var(--color-text-muted);
    padding: 0.375rem 0 0.375rem 1rem;
    border-left: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

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

.sidebar-link.active {
    color: var(--color-accent);
    border-left-color: var(--color-accent);
}

/* All Articles Link (special link at top of sidebar) */
.sidebar-link-all {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0;
    font-size: var(--font-base);
    font-weight: 500;
    color: var(--color-text);
    border-left: none;
}

.sidebar-link-all:hover {
    color: var(--color-accent);
}

.sidebar-link-all.active {
    color: var(--color-accent);
}

/* ==================== Docs Page ==================== */

/* Navigation */
.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    padding-bottom: var(--spacing-lg);
}

/* Content */
.markdown-content {
    max-width: 100%;
    min-width: 0;
}

.markdown-content h1 {
    font-size: var(--font-3xl);
    margin-bottom: 0.5rem;
}

.markdown-intro {
    font-size: var(--font-lg);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.markdown-content h2 {
    font-size: var(--font-2xl);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    padding-top: var(--spacing-sm);
}

.markdown-content section:first-of-type h2 {
    margin-top: 0;
    padding-top: 0;
}

.markdown-content h3 {
    font-size: var(--font-lg);
    margin-top: var(--spacing-md);
    margin-bottom: 0.5rem;
    color: var(--color-text-muted);
}

.markdown-content h4,
.markdown-content h5,
.markdown-content h6 {
    color: var(--color-text-muted);
}

.markdown-content p {
    margin-bottom: 1rem;
    line-height: 1.8;
}

.markdown-content ul,
.markdown-content ol {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

.markdown-content li {
    font-size: var(--font-base);
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: 0.5rem;
}

.markdown-content li strong {
    color: var(--color-text-muted);
}

.markdown-content a {
    color: var(--color-accent);
}

.markdown-content a:hover {
    text-decoration: underline;
}

.markdown-content a.pagination-prev:hover,
.markdown-content a.pagination-next:hover {
    text-decoration: none;
}

/* Image & Placeholder */
.markdown-figure {
    margin: var(--spacing-md) 0;
}

.markdown-image-placeholder {
    width: 100%;
    aspect-ratio: 16/9;
    background: var(--color-bg-alternate);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.markdown-figure img {
    width: 100%;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.markdown-figure figcaption {
    font-size: var(--font-sm);
    color: var(--color-text-muted);
    text-align: center;
    margin-top: 0.5rem;
}

/* Article Title */
.article-title {
    font-size: var(--font-3xl);
    font-weight: 500;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

/* Article Cover Image */
.article-cover {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.article-cover picture {
    display: block;
    line-height: 0;
}

.article-cover img {
    width: 100%;
    height: auto;
    display: block;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

/* Article Publication Date */
.article-date {
    font-size: var(--font-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
}

/* Images in content */
.markdown-content .markdown-body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    margin: var(--spacing-sm) 0;
}

/* Video embeds (YouTube, Vimeo) */
.markdown-content .video-embed {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-border);
    margin: var(--spacing-md) 0;
}

/* Video */
.markdown-video {
    margin: var(--spacing-md) 0;
}

.markdown-video video {
    width: 100%;
    aspect-ratio: 16/9;
    background: var(--color-bg-alternate);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

/* Code Block */
.markdown-code {
    background: #0a0a0a;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1rem;
    margin: var(--spacing-md) 0;
    overflow-x: auto;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
    font-size: var(--font-sm);
    line-height: 1.6;
    color: var(--color-text);
}

.markdown-code code {
    background: none;
    padding: 0;
    color: inherit;
    font-size: inherit;
}

/* Inline code */
.markdown-content code {
    font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
    font-size: var(--font-sm);
    background: var(--color-bg-alternate);
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
    color: var(--color-accent);
}

/* Terminal Window */
.terminal-window {
    background: #0d0d0d;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
    overflow: hidden;
}

.terminal-header {
    display: flex;
    align-items: center;
    padding: 0.625rem 1rem;
    background: #1a1a1a;
    border-bottom: 1px solid var(--color-border);
    gap: 0.75rem;
}

.terminal-buttons {
    display: flex;
    gap: 0.5rem;
}

.terminal-btn {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-btn-close {
    background: #ff5f56;
}

.terminal-btn-minimize {
    background: #ffbd2e;
}

.terminal-btn-maximize {
    background: #27ca40;
}

.terminal-title {
    flex: 1;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
    font-size: var(--font-sm);
    color: var(--color-text-muted);
    text-transform: lowercase;
}

.terminal-copy {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.25rem;
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.terminal-copy:hover {
    color: var(--color-text);
    background: rgba(255, 255, 255, 0.1);
}

.terminal-copy.copied {
    color: #27ca40;
}

.terminal-copy svg {
    width: 14px;
    height: 14px;
}

.terminal-body {
    padding: 0;
}

.terminal-body pre {
    margin: 0;
    padding: 1rem;
    background: transparent;
    border: none;
    border-radius: 0;
    overflow-x: auto;
}

.terminal-body code {
    background: none;
    padding: 0;
    color: var(--color-text);
    font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
    font-size: var(--font-sm);
    line-height: 1.6;
}

/* Override default pre/code styles inside terminal */
.terminal-window pre,
.terminal-window code {
    background: transparent !important;
    border: none !important;
    margin: 0 !important;
}

/* Callouts */
.markdown-callout {
    padding: 1rem;
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
    font-size: var(--font-sm);
    line-height: 1.7;
    color: var(--color-text);
}

.markdown-callout--tip {
    background: rgba(33, 164, 245, 0.1);
    border: 1px solid rgba(33, 164, 245, 0.2);
}

.markdown-callout--tip strong {
    color: var(--color-accent);
}

.markdown-callout--warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.markdown-callout--warning strong {
    color: #f59e0b;
}

.markdown-callout--danger {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.markdown-callout--danger strong {
    color: #ef4444;
}

/* Pagination */
.pagination {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: var(--spacing-xl);
}

.pagination-prev,
.pagination-next {
    display: flex;
    flex-direction: column;
    padding: 1rem;
    background: var(--color-bg-alternate);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.pagination-prev:hover,
.pagination-next:hover {
    background: var(--color-border);
}

.pagination-prev {
    grid-column: 1;
}

.pagination-next {
    grid-column: 2;
    text-align: right;
}

.pagination-label {
    font-size: var(--font-sm);
    color: var(--color-text-muted);
    margin-bottom: 0.25rem;
}

.pagination-title {
    font-size: var(--font-base);
    font-weight: 500;
    color: var(--color-text);
}

/* Table of Contents */
.content-toc {
    position: sticky;
    top: 5rem;
    height: fit-content;
}

.content-toc-title {
    font-size: var(--font-sm);
    font-weight: 500;
    color: var(--color-text);
    display: block;
    margin-bottom: 0.75rem;
}

.content-toc-nav {
    display: flex;
    flex-direction: column;
}

.content-toc-link {
    font-size: var(--font-sm);
    color: var(--color-text-muted);
    padding: 0.25rem 0;
    border-left: 1px solid var(--color-border);
    padding-left: 0.75rem;
    transition: all var(--transition-fast);
}

.content-toc-link:hover,
.content-toc-link.active {
    color: var(--color-text);
    border-left-color: var(--color-text);
}

/* ==========================================================================
   18. ABOUT PAGE
   ========================================================================== */
.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-section {
    margin-bottom: var(--spacing-xl);
}

.about-section h2 {
    margin-bottom: var(--spacing-md);
}

.about-values {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

.about-value h3 {
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.about-address {
    font-style: normal;
    color: var(--color-text-muted);
    line-height: 1.8;
}

.about-address a {
    color: var(--color-accent);
}

.about-address a:hover {
    text-decoration: underline;
}

/* ==========================================================================
   19. CONTACT PAGE
   ========================================================================== */

/* 2-column layout */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-md) var(--spacing-xl);
    align-items: start;
}

/* Left column: Info */
.contact-info {
    position: sticky;
    top: 6rem;
}

.contact-info h2 {
    margin-bottom: var(--spacing-md);
}

.contact-info .text-secondary {
    margin-bottom: var(--spacing-md);
}

.contact-info .text-tertiary {
    margin-bottom: var(--spacing-lg);
}

.contact-email {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.contact-email a {
    color: var(--color-accent);
    font-weight: 500;
    font-size: var(--font-xl);
}

.contact-email a:hover {
    text-decoration: underline;
}

/* Right column: Form wrapper */
.contact-form-wrapper {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

/* Contact Form */
.contact-form {
    margin-top: var(--spacing-md);
}

.contact-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.contact-form-group {
    margin-bottom: var(--spacing-md);
}

.contact-form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--color-text);
}

.contact-form-group label .required {
    color: var(--color-accent);
}

.contact-form-group input,
.contact-form-group select,
.contact-form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: var(--font-base);
    font-family: inherit;
    color: var(--color-text);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.contact-form-group input::placeholder,
.contact-form-group textarea::placeholder {
    color: var(--color-text-muted);
}

.contact-form-group input:focus,
.contact-form-group select:focus,
.contact-form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.1);
}

.contact-form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.contact-form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.contact-form-success {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    border-radius: var(--radius-lg);
    color: #22c55e;
}

.contact-form-success svg {
    flex-shrink: 0;
    margin-top: 2px;
}

.contact-form-success strong {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: #22c55e;
}

.contact-form-success p {
    margin: 0;
    color: var(--color-text-muted);
}

.contact-form-error {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-md);
    color: #ef4444;
}

.contact-form-error svg {
    flex-shrink: 0;
}

/* ==========================================================================
   20. RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
    .container-3-cols {
        grid-template-columns: repeat(2, 1fr);
    }

    h1 {
        font-size: 2.75rem;
    }

    .feature,
    .feature--reverse {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .feature--reverse > div:first-child,
    .feature--reverse > img {
        order: unset;
    }

    /* Legal nav tablet */
    .legal-nav {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 0.5rem 1rem;
    }

    .legal-nav-title {
        width: 100%;
        margin-bottom: 0.5rem;
    }

    /* Layouts tablet */
    .layout-3-cols {
        grid-template-columns: 240px 1fr;
    }

    .content-toc {
        display: none;
    }

}

@media (max-width: 768px) {
    .header {
        padding: var(--spacing-sm) 1rem;
    }

    .nav {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .header-buttons {
        margin-left: auto;
        margin-right: 1rem;
    }

    .header-buttons .hide-mobile {
        display: none;
    }

    .mobile-menu-close {
        right: 1rem;
    }

    .mobile-nav {
        padding: 6rem 1rem var(--spacing-md) var(--spacing-lg);
    }

    .mobile-nav a {
        font-size: var(--font-3xl);
    }

    .hero {
        padding: 7rem 1rem 2rem;
    }

    h1 {
        font-size: var(--font-3xl);
    }

    .hero p {
        font-size: var(--font-base);
    }

    .hero .btn {
        width: 100%;
        justify-content: center;
    }

    .container-3-cols,
    .container-2-cols {
        grid-template-columns: 1fr;
    }

    .container-2-cols > .section-header {
        position: static;
    }

    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem var(--spacing-md);
    }

    /* Content page mobile */
    .content-page {
        padding-top: 5rem;
    }

    /* Page header mobile */
    .page-header h1 {
        font-size: var(--font-2xl);
    }

    .page-header .text-secondary {
        font-size: var(--font-lg);
    }

    /* Layout mobile */
    .layout-2-cols,
    .layout-3-cols {
        grid-template-columns: 1fr;
        padding: 0 1rem var(--spacing-lg);
    }

    .sidebar {
        position: static;
        max-height: none;
        padding-bottom: var(--spacing-md);
        border-bottom: 1px solid var(--color-border);
        margin-bottom: var(--spacing-md);
    }

    th, td {
        padding: 0.5rem 0.75rem;
    }

    /* Docs content mobile */
    .markdown-content h2 {
        font-size: var(--font-xl);
    }

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

    .pagination-prev,
    .pagination-next {
        grid-column: 1;
    }

    /* About page mobile */
    .about-values {
        grid-template-columns: 1fr;
    }

    /* Contact page mobile */
    .contact-layout {
        grid-template-columns: 1fr;
        padding: 0 1rem var(--spacing-lg);
    }

    .contact-info {
        position: static;
    }

    .contact-form-row {
        grid-template-columns: 1fr;
    }
}