/* ==========================================================================
   Forsetti Core — Main Stylesheet
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties
   -------------------------------------------------------------------------- */
:root {
    /* Colors */
    --color-bg: #0A0F14;
    --color-surface: #101722;
    --color-surface-alt: #151E2B;
    --color-border: #243041;
    --color-text: #EAF1F8;
    --color-text-secondary: #A9B7C6;
    --color-accent-1: #5DA9FF;
    --color-accent-2: #63E6FF;
    --color-accent-3: #7E8FA6;
    --color-accent-1-hover: #7ABBFF;
    --color-success: #4ADE80;
    --color-warning: #FBBF24;
    --color-error: #F87171;

    /* Typography */
    --font-primary: 'Inter', 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;

    /* Font sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;
    --text-4xl: 2.5rem;
    --text-5xl: 3.25rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;

    /* Layout */
    --container-max: 1200px;
    --container-content: 800px;
    --container-docs: 1400px;
    --header-height: 64px;
    --sidebar-width: 280px;

    /* Borders */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;
    --radius-2xl: 16px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-height) + var(--space-8));
}

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* --------------------------------------------------------------------------
   Typography
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-text);
    letter-spacing: -0.01em;
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p {
    margin-bottom: var(--space-4);
    color: var(--color-text-secondary);
}

a {
    color: var(--color-accent-1);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent-2);
}

a:focus-visible {
    outline: 2px solid var(--color-accent-1);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

strong, b {
    font-weight: 600;
    color: var(--color-text);
}

code, kbd, samp {
    font-family: var(--font-mono);
    font-size: 0.875em;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 0.15em 0.4em;
}

pre {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    line-height: 1.6;
    overflow-x: auto;
}

pre code {
    background: none;
    border: none;
    padding: 0;
    font-size: inherit;
}

blockquote {
    border-left: 3px solid var(--color-accent-1);
    padding-left: var(--space-6);
    margin: var(--space-8) 0;
    color: var(--color-text-secondary);
    font-style: italic;
}

hr {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: var(--space-12) 0;
}

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

ul, ol {
    padding-left: var(--space-6);
    margin-bottom: var(--space-4);
}

li {
    margin-bottom: var(--space-2);
    color: var(--color-text-secondary);
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-8) 0;
}

th, td {
    padding: var(--space-3) var(--space-4);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

th {
    font-weight: 600;
    color: var(--color-text);
    background: var(--color-surface);
}

/* --------------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------------- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.container--content {
    max-width: var(--container-content);
}

.container--docs {
    max-width: var(--container-docs);
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr;
    gap: var(--space-12);
}

.site-main {
    min-height: calc(100vh - var(--header-height));
    padding-top: var(--space-12);
    padding-bottom: var(--space-16);
}

/* --------------------------------------------------------------------------
   Skip Link
   -------------------------------------------------------------------------- */
.skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-4);
    z-index: 9999;
    padding: var(--space-2) var(--space-4);
    background: var(--color-accent-1);
    color: var(--color-bg);
    font-weight: 600;
    border-radius: var(--radius-md);
}

.skip-link:focus {
    top: var(--space-4);
}

/* --------------------------------------------------------------------------
   Screen Reader
   -------------------------------------------------------------------------- */
.screen-reader-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.screen-reader-text:focus {
    position: static;
    width: auto;
    height: auto;
    padding: var(--space-2) var(--space-4);
    margin: 0;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(10, 15, 20, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    height: var(--header-height);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    gap: var(--space-8);
}

.site-header__brand {
    flex-shrink: 0;
}

.site-title {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-text);
    text-decoration: none;
    letter-spacing: -0.02em;
}

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

.site-logo-icon {
    flex-shrink: 0;
}

/* Logo images */
.site-logo-img {
    display: block;
    height: auto;
    object-fit: contain;
}

.site-logo-img--header {
    max-height: 50px;
    width: auto;
}

.site-logo-img--footer {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
}

/* Navigation */
.main-navigation {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-1);
    margin: 0;
    padding: 0;
}

.nav-menu li {
    margin: 0;
}

.nav-menu a {
    display: block;
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    border-radius: var(--radius-md);
    transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-menu a:hover,
.nav-menu .current-menu-item > a,
.nav-menu .current_page_item > a {
    color: var(--color-text);
    background: var(--color-surface);
}

/* Header actions */
.site-header__actions {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

/* Mobile menu toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    padding: 0;
}

.menu-toggle__bar {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--color-text);
    border-radius: 1px;
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__bar:nth-child(2) {
    opacity: 0;
}

.menu-toggle[aria-expanded="true"] .menu-toggle__bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-5);
    font-family: var(--font-primary);
    font-size: var(--text-sm);
    font-weight: 500;
    line-height: 1.5;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
}

.btn:focus-visible {
    outline: 2px solid var(--color-accent-1);
    outline-offset: 2px;
}

.btn--primary {
    background: var(--color-accent-1);
    color: var(--color-bg);
    border-color: var(--color-accent-1);
}

.btn--primary:hover {
    background: var(--color-accent-1-hover);
    border-color: var(--color-accent-1-hover);
    color: var(--color-bg);
}

.btn--outline {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn--outline:hover {
    border-color: var(--color-accent-1);
    color: var(--color-accent-1);
    background: rgba(93, 169, 255, 0.05);
}

.btn--github {
    background: var(--color-surface);
    color: var(--color-text);
    border-color: var(--color-border);
    font-size: var(--text-sm);
}

.btn--github:hover {
    background: var(--color-surface-alt);
    border-color: var(--color-accent-3);
    color: var(--color-text);
}

.btn--lg {
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-base);
}

.btn--disabled {
    background: var(--color-surface-alt);
    color: var(--color-text-secondary);
    border-color: var(--color-border);
    cursor: not-allowed;
    opacity: 0.6;
    pointer-events: none;
}

/* --------------------------------------------------------------------------
   Badge
   -------------------------------------------------------------------------- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-xs);
    font-weight: 500;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 9999px;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    background: var(--color-surface);
}

.badge--accent {
    color: var(--color-accent-1);
    border-color: rgba(93, 169, 255, 0.3);
    background: rgba(93, 169, 255, 0.08);
}

.badge--muted {
    color: var(--color-accent-3);
    border-color: var(--color-border);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
    padding: var(--space-24) 0 var(--space-20);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(93, 169, 255, 0.06) 0%, transparent 70%);
    pointer-events: none;
}

.hero__inner {
    position: relative;
}

.hero__badge {
    margin-bottom: var(--space-6);
}

.hero__title {
    font-size: var(--text-5xl);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.15;
    max-width: 800px;
    margin: 0 auto var(--space-6);
}

.hero__subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    max-width: 640px;
    margin: 0 auto var(--space-10);
    line-height: 1.7;
}

.hero__actions {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    margin-bottom: var(--space-12);
    flex-wrap: wrap;
}

.hero__code {
    max-width: 480px;
    margin: 0 auto;
    text-align: left;
}

/* --------------------------------------------------------------------------
   Code Blocks
   -------------------------------------------------------------------------- */
.code-block {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-5) var(--space-6);
    overflow-x: auto;
    font-size: var(--text-sm);
    line-height: 1.7;
}

.code-keyword { color: #FF79C6; }
.code-type { color: var(--color-accent-2); }
.code-property { color: var(--color-accent-1); }
.code-string { color: #50FA7B; }
.code-comment { color: var(--color-accent-3); font-style: italic; }
.code-number { color: #BD93F9; }

/* --------------------------------------------------------------------------
   Sections
   -------------------------------------------------------------------------- */
.section {
    padding: var(--space-20) 0;
}

.section--comparison,
.section--audience {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

/* --------------------------------------------------------------------------
   Section Heading
   -------------------------------------------------------------------------- */
.section-heading {
    text-align: center;
    margin-bottom: var(--space-12);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-heading__label {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent-1);
    margin-bottom: var(--space-4);
}

.section-heading__title {
    margin-bottom: var(--space-4);
}

.section-heading__subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: var(--space-16) 0 var(--space-8);
}

.site-footer__grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-16);
    margin-bottom: var(--space-12);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-text);
    text-decoration: none;
    margin-bottom: var(--space-4);
}

.footer-logo:hover {
    color: var(--color-text);
}

.site-footer__tagline {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    max-width: 280px;
}

.site-footer__nav {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.footer-col__title {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-4);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-col__links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-col__links li {
    margin-bottom: var(--space-2);
}

.footer-col__links a {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.footer-col__links a:hover {
    color: var(--color-accent-1);
}

.site-footer__bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-border);
}

.site-footer__copyright {
    font-size: var(--text-sm);
    color: var(--color-accent-3);
    margin: 0;
}

.footer-legal-menu {
    display: flex;
    list-style: none;
    gap: var(--space-6);
    margin: 0;
    padding: 0;
}

.footer-legal-menu a {
    font-size: var(--text-sm);
    color: var(--color-accent-3);
}

.footer-legal-menu a:hover {
    color: var(--color-text);
}

/* --------------------------------------------------------------------------
   Entry Content (Gutenberg output)
   -------------------------------------------------------------------------- */
.entry-content > * {
    margin-bottom: var(--space-6);
}

.entry-content > *:last-child {
    margin-bottom: 0;
}

.entry-content h2 {
    margin-top: var(--space-12);
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--color-border);
}

.entry-content h3 {
    margin-top: var(--space-8);
    margin-bottom: var(--space-3);
}

.entry-content h4 {
    margin-top: var(--space-6);
    margin-bottom: var(--space-2);
}

.entry-content a {
    text-decoration: underline;
    text-underline-offset: 2px;
}

.entry-content a:hover {
    text-decoration: none;
}

.entry-content .wp-block-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.entry-content .wp-block-code {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-5) var(--space-6);
    overflow-x: auto;
    font-size: var(--text-sm);
}

.entry-content .wp-block-table table {
    margin: 0;
}

/* Alignment */
.alignwide {
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
}

.alignfull {
    width: 100vw;
    margin-left: calc(-50vw + 50%);
}

.aligncenter {
    text-align: center;
}

/* --------------------------------------------------------------------------
   Pagination
   -------------------------------------------------------------------------- */
.navigation.pagination {
    margin-top: var(--space-12);
}

.nav-links {
    display: flex;
    justify-content: center;
    gap: var(--space-2);
}

.page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--space-3);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.page-numbers:hover {
    color: var(--color-text);
    border-color: var(--color-accent-1);
}

.page-numbers.current {
    color: var(--color-bg);
    background: var(--color-accent-1);
    border-color: var(--color-accent-1);
}

/* --------------------------------------------------------------------------
   WordPress Defaults
   -------------------------------------------------------------------------- */
.wp-caption {
    max-width: 100%;
}

.wp-caption-text {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-top: var(--space-2);
}

.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-4);
}

.gallery-item {
    margin: 0;
}

.gallery-item img {
    border-radius: var(--radius-md);
}