/* ==========================================================================
   Semark Nordic Theme — Warm Neutrals
   ========================================================================== */

:root {
    --color-primary: #3b3a36;
    --color-secondary: #7a6e5e;
    --color-accent: #a0866e;
    --color-text: #2d2b28;
    --color-text-light: #6b6560;
    --color-text-muted: #8c8378;
    --color-bg: #faf8f5;
    --color-bg-alt: #f0ece6;
    --color-bg-dark: #3b3a36;
    --color-border: #ddd7ce;
    --color-border-light: #e8e3db;
    --color-link: #7a6e5e;
    --color-link-hover: #a0866e;
    --color-white: #ffffff;
    --color-footer-bg: #2d2b28;
    --color-footer-text: #d4cec4;
    --color-nav-hover: #504d47;
    --color-hero-overlay: rgba(59, 58, 54, 0.5);

    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, Roboto, sans-serif;
    --font-heading: var(--font-sans);

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    --max-width: 1100px;
    --content-max-width: 780px;
    --border-radius: 4px;
    --border-radius-lg: 8px;
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font-sans); color: var(--color-text); background-color: var(--color-bg); line-height: 1.7; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-link); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--color-link-hover); }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); color: var(--color-primary); line-height: 1.25; letter-spacing: -0.01em; font-weight: 600; }
h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.1rem; }
ul, ol { padding-left: 1.5rem; }

/* Accessibility */
.skip-link { position: absolute; top: -100%; left: var(--spacing-md); background: var(--color-primary); color: var(--color-white); padding: var(--spacing-sm) var(--spacing-md); border-radius: var(--border-radius); z-index: 1000; font-size: 0.875rem; text-decoration: none; }
.skip-link:focus { top: var(--spacing-sm); color: var(--color-white); }

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

/* ==========================================================================
   Navigation Bar
   ========================================================================== */
.nav-bar { position: sticky; top: 0; z-index: 100; background-color: var(--color-bg-dark); }
.nav-bar__inner { display: flex; align-items: center; height: 60px; gap: var(--spacing-lg); }
.nav-bar__logo { color: var(--color-white); font-size: 1.1rem; font-weight: 600; text-decoration: none; letter-spacing: -0.01em; white-space: nowrap; flex-shrink: 0; }
.nav-bar__logo:hover { color: var(--color-white); opacity: 0.9; }
.nav-bar__menu { display: flex; align-items: center; list-style: none; margin: 0; padding: 0; gap: 0; flex: 1; }
.nav-bar__link { display: block; color: var(--color-footer-text); text-decoration: none; padding: 0 var(--spacing-md); line-height: 60px; font-size: 0.875rem; letter-spacing: 0.03em; text-transform: uppercase; transition: color var(--transition-fast), background-color var(--transition-fast); white-space: nowrap; }
.nav-bar__link:hover, .nav-bar__link--active { color: var(--color-white); background-color: var(--color-nav-hover); }
.nav-bar__item--lang { margin-left: auto; flex-shrink: 0; }
.nav-bar__lang { display: flex; align-items: center; gap: var(--spacing-sm); }
.nav-bar__lang-link { color: var(--color-text-muted); font-size: 0.8rem; text-decoration: none; text-transform: uppercase; letter-spacing: 0.05em; padding: var(--spacing-xs) var(--spacing-sm); border-radius: var(--border-radius); transition: color var(--transition-fast); }
.nav-bar__lang-link:hover { color: var(--color-white); }
.nav-bar__lang-link--active { color: var(--color-white); font-weight: 600; }

/* Flag icons */
.flag-icon { display: block; filter: grayscale(1); opacity: 0.6; transition: filter var(--transition-base), opacity var(--transition-base); border-radius: 2px; }
.nav-bar__lang-link:hover .flag-icon { filter: grayscale(0); opacity: 1; }
.nav-bar__lang-link--active .flag-icon { filter: grayscale(0); opacity: 1; }

/* Hamburger — hidden on desktop */
.nav-bar__toggle { display: none; flex-direction: column; justify-content: center; gap: 5px; background: none; border: none; cursor: pointer; padding: var(--spacing-sm); margin-left: auto; }
.nav-bar__toggle-bar { display: block; width: 24px; height: 2px; background-color: var(--color-white); border-radius: 2px; transition: transform var(--transition-base), opacity var(--transition-fast); }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero { position: relative; width: 100%; height: 50vh; min-height: 350px; max-height: 600px; overflow: hidden; }
.hero__image-wrapper { position: absolute; inset: 0; background: linear-gradient(135deg, #3b3a36 0%, #7a6e5e 50%, #a0866e 100%); }
.hero__image { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.hero__overlay { position: absolute; inset: 0; background: var(--color-hero-overlay); display: flex; align-items: center; justify-content: center; text-align: center; padding: var(--spacing-lg); }
.hero__title { color: var(--color-white); font-size: 2.5rem; margin-bottom: var(--spacing-sm); letter-spacing: -0.02em; }
.hero__subtitle { color: var(--color-footer-text); font-size: 1.1rem; max-width: 550px; margin: 0 auto; line-height: 1.6; }

/* Page hero — inner pages */
.page-hero { background-color: var(--color-bg-alt); padding: var(--spacing-2xl) 0; border-bottom: 1px solid var(--color-border-light); }
.page-hero__title { font-size: 2rem; color: var(--color-primary); margin: 0; }

/* ==========================================================================
   Breadcrumbs
   ========================================================================== */
.breadcrumbs { background-color: var(--color-bg); padding: var(--spacing-sm) 0; border-bottom: 1px solid var(--color-border-light); font-size: 0.85rem; }
.breadcrumbs__list { display: flex; list-style: none; gap: var(--spacing-xs); margin: 0; padding: 0; color: var(--color-text-muted); }
.breadcrumbs__item + .breadcrumbs__item::before { content: "/"; margin-right: var(--spacing-xs); color: var(--color-border); }
.breadcrumbs__link { color: var(--color-text-muted); text-decoration: none; }
.breadcrumbs__link:hover { color: var(--color-text); }
.breadcrumbs__item--current { color: var(--color-text-light); }

/* ==========================================================================
   Content Area
   ========================================================================== */
.single-page, .list-page { padding: var(--spacing-2xl) 0; }
.content-wrapper { max-width: var(--content-max-width); }
.content-wrapper--sidebar { display: grid; grid-template-columns: 220px 1fr; gap: var(--spacing-2xl); max-width: var(--max-width); }

/* Sidebar */
.sidebar { padding-top: var(--spacing-sm); }
.sidebar__title { font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-text-muted); margin-bottom: var(--spacing-md); padding-bottom: var(--spacing-sm); border-bottom: 1px solid var(--color-border-light); }
.sidebar__list { list-style: none; padding: 0; }
.sidebar__link { display: block; padding: var(--spacing-xs) 0; color: var(--color-text-light); font-size: 0.9rem; text-decoration: none; border-bottom: 1px solid var(--color-border-light); transition: color var(--transition-fast); }
.sidebar__link:hover { color: var(--color-text); }
.sidebar__link--active { color: var(--color-primary); font-weight: 600; }

/* Article */
.article__date { display: block; font-size: 0.85rem; color: var(--color-text-muted); margin-bottom: var(--spacing-lg); }
.article__footer { margin-top: var(--spacing-2xl); padding-top: var(--spacing-lg); border-top: 1px solid var(--color-border-light); }
.article__tags { display: flex; flex-wrap: wrap; gap: var(--spacing-sm); }
.tag { display: inline-block; padding: var(--spacing-xs) var(--spacing-md); background-color: var(--color-bg-alt); color: var(--color-text-light); font-size: 0.8rem; border-radius: 20px; text-decoration: none; transition: background-color var(--transition-fast), color var(--transition-fast); }
.tag:hover { background-color: var(--color-border); color: var(--color-text); }
.article__actions { margin-top: var(--spacing-xl); }

/* ==========================================================================
   Prose — content typography
   ========================================================================== */
.prose p { margin-bottom: var(--spacing-lg); }
.prose h2 { margin-top: var(--spacing-2xl); margin-bottom: var(--spacing-md); padding-bottom: var(--spacing-xs); border-bottom: 1px solid var(--color-border-light); }
.prose h3 { margin-top: var(--spacing-xl); margin-bottom: var(--spacing-sm); }
.prose h4 { margin-top: var(--spacing-lg); margin-bottom: var(--spacing-sm); }
.prose ul, .prose ol { margin-bottom: var(--spacing-lg); }
.prose li { margin-bottom: var(--spacing-xs); }
.prose img { border-radius: var(--border-radius-lg); margin: var(--spacing-xl) 0; }
.prose table { width: 100%; border-collapse: collapse; margin: var(--spacing-xl) 0; font-size: 0.95rem; }
.prose table th { background-color: var(--color-bg-alt); text-align: left; font-weight: 600; border-bottom: 2px solid var(--color-border); padding: var(--spacing-sm) var(--spacing-md); }
.prose table td { padding: var(--spacing-sm) var(--spacing-md); border-bottom: 1px solid var(--color-border-light); }
.prose table tr:hover { background-color: var(--color-bg-alt); }
.prose blockquote { border-left: 3px solid var(--color-accent); padding-left: var(--spacing-lg); color: var(--color-text-light); margin: var(--spacing-xl) 0; font-style: italic; }
.prose code { background-color: var(--color-bg-alt); padding: 2px 6px; border-radius: 3px; font-size: 0.9em; }
.prose pre { background-color: var(--color-bg-dark); color: var(--color-footer-text); padding: var(--spacing-lg); border-radius: var(--border-radius-lg); overflow-x: auto; margin: var(--spacing-xl) 0; }
.prose pre code { background: none; padding: 0; font-size: 0.85rem; }
.prose a { text-decoration: underline; text-underline-offset: 2px; }

/* ==========================================================================
   Homepage Sections
   ========================================================================== */
.section { padding: var(--spacing-3xl) 0; }
.section--alt { background-color: var(--color-bg-alt); }
.section__title { font-size: 1.5rem; margin-bottom: var(--spacing-xl); position: relative; padding-bottom: var(--spacing-sm); }
.section__title::after { content: ""; position: absolute; bottom: 0; left: 0; width: 40px; height: 2px; background-color: var(--color-accent); }

.expertise-list { list-style: none; columns: 2; column-gap: var(--spacing-2xl); padding: 0; }
.expertise-list li { padding: var(--spacing-sm) 0; padding-left: var(--spacing-lg); position: relative; break-inside: avoid; border-bottom: 1px solid var(--color-border-light); }
.expertise-list li::before { content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%); width: 6px; height: 6px; background-color: var(--color-accent); border-radius: 50%; }

.articles-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-lg); }
.card { background-color: var(--color-bg); padding: var(--spacing-lg); border-radius: var(--border-radius-lg); border: 1px solid var(--color-border-light); transition: box-shadow var(--transition-base); }
.card:hover { box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06); }
.card__title { font-size: 1rem; margin-bottom: var(--spacing-sm); }
.card__title a { color: var(--color-primary); text-decoration: none; }
.card__title a:hover { color: var(--color-accent); }
.card__summary { font-size: 0.9rem; color: var(--color-text-light); line-height: 1.5; }

.callout { background-color: var(--color-bg-alt); border-left: 3px solid var(--color-accent); padding: var(--spacing-lg) var(--spacing-xl); border-radius: 0 var(--border-radius-lg) var(--border-radius-lg) 0; font-size: 1rem; color: var(--color-text-light); line-height: 1.7; }

/* ==========================================================================
   List Page
   ========================================================================== */
.list-page__intro { max-width: var(--content-max-width); margin-bottom: var(--spacing-2xl); }
.list-page__items { max-width: var(--content-max-width); }
.list-item { padding: var(--spacing-lg) 0; border-bottom: 1px solid var(--color-border-light); }
.list-item:first-child { padding-top: 0; }
.list-item__title { font-size: 1.15rem; margin-bottom: var(--spacing-xs); }
.list-item__title a { color: var(--color-primary); text-decoration: none; }
.list-item__title a:hover { color: var(--color-accent); }
.list-item__summary { color: var(--color-text-light); font-size: 0.95rem; margin-bottom: var(--spacing-xs); }
.list-item__date { font-size: 0.8rem; color: var(--color-text-muted); }

/* Tag Filter */
.tag-filter { display: flex; flex-wrap: wrap; gap: var(--spacing-sm); padding-bottom: var(--spacing-lg); margin-bottom: var(--spacing-lg); border-bottom: 1px solid var(--color-border-light); }
.tag-filter__btn { display: inline-block; padding: var(--spacing-xs) var(--spacing-md); background-color: var(--color-bg-alt); color: var(--color-text-light); font-family: var(--font-sans); font-size: 0.8rem; border: 1px solid var(--color-border-light); border-radius: 20px; cursor: pointer; transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast); }
.tag-filter__btn:hover { background-color: var(--color-border); color: var(--color-text); }
.tag-filter__btn--active { background-color: var(--color-primary); color: var(--color-white); border-color: var(--color-primary); }
.tag-filter__btn--active:hover { background-color: var(--color-nav-hover); border-color: var(--color-nav-hover); }

.tag-filter__count { font-size: 0.85rem; color: var(--color-text-muted); margin-bottom: var(--spacing-md); }

.tag-filter__item { display: flex; align-items: baseline; justify-content: space-between; gap: var(--spacing-md); padding: var(--spacing-sm) 0; border-bottom: 1px solid var(--color-border-light); }
.tag-filter__item:first-child { padding-top: 0; }
.tag-filter__item-title { font-size: 1rem; }
.tag-filter__item-title a { color: var(--color-primary); text-decoration: none; }
.tag-filter__item-title a:hover { color: var(--color-accent); }
.tag-filter__item-tags { display: flex; flex-wrap: wrap; gap: var(--spacing-xs); flex-shrink: 0; }
.tag--small { display: inline-block; padding: 2px var(--spacing-sm); background-color: var(--color-bg-alt); color: var(--color-text-muted); font-size: 0.7rem; border-radius: 20px; }

/* ==========================================================================
   Search
   ========================================================================== */
.search-form { display: flex; gap: var(--spacing-sm); margin-bottom: var(--spacing-xl); max-width: 500px; }
.search-form__input { flex: 1; padding: var(--spacing-sm) var(--spacing-md); border: 1px solid var(--color-border); border-radius: var(--border-radius); font-family: var(--font-sans); font-size: 1rem; background-color: var(--color-white); color: var(--color-text); transition: border-color var(--transition-fast); }
.search-form__input:focus { outline: none; border-color: var(--color-accent); }
.search-result { padding: var(--spacing-lg) 0; border-bottom: 1px solid var(--color-border-light); }
.search-result h3 a { color: var(--color-primary); text-decoration: none; }
.search-result h3 a:hover { color: var(--color-accent); }
.search-result p { color: var(--color-text-light); font-size: 0.95rem; }
.search-result mark { background-color: #f5e6b8; color: var(--color-text); padding: 1px 3px; border-radius: 2px; }

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn { display: inline-block; padding: var(--spacing-sm) var(--spacing-lg); font-family: var(--font-sans); font-size: 0.9rem; border-radius: var(--border-radius); cursor: pointer; transition: background-color var(--transition-fast), color var(--transition-fast); text-decoration: none; border: none; }
.btn--primary { background-color: var(--color-primary); color: var(--color-white); }
.btn--primary:hover { background-color: var(--color-nav-hover); color: var(--color-white); }
.btn--ghost { background: none; color: var(--color-text-muted); border: 1px solid var(--color-border); }
.btn--ghost:hover { color: var(--color-text); border-color: var(--color-text-light); }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer { background-color: var(--color-footer-bg); color: var(--color-footer-text); margin-top: var(--spacing-4xl); }
.footer-main { padding: var(--spacing-3xl) 0 var(--spacing-2xl); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--spacing-2xl); }
.footer-col__title { color: var(--color-white); font-size: 0.95rem; margin-bottom: var(--spacing-md); font-weight: 600; letter-spacing: 0.02em; }
.footer-col__text { font-size: 0.9rem; line-height: 1.6; margin-bottom: var(--spacing-md); }
.footer-col__address { font-style: normal; font-size: 0.9rem; line-height: 1.8; }
.footer-col__address a { color: var(--color-footer-text); text-decoration: none; transition: color var(--transition-fast); }
.footer-col__address a:hover { color: var(--color-white); }

.logo-link { display: inline-block; color: var(--color-footer-text); }
.logo-link:hover { color: var(--color-white); }

.footer-social { display: flex; gap: var(--spacing-sm); margin-top: var(--spacing-md); }
.footer-social__link { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%; background-color: var(--color-nav-hover); color: var(--color-footer-text); transition: background-color var(--transition-fast), color var(--transition-fast); }
.footer-social__link:hover { background-color: var(--color-accent); color: var(--color-white); }
.footer-social__link svg { width: 18px; height: 18px; }

.footer-bottom { border-top: 1px solid var(--color-nav-hover); padding: var(--spacing-md) 0; text-align: center; font-size: 0.8rem; color: var(--color-text-muted); }

/* ==========================================================================
   404 Page
   ========================================================================== */
.error-page { text-align: center; padding: var(--spacing-4xl) 0; }
.error-page__code { font-size: 6rem; font-weight: 700; color: var(--color-border); line-height: 1; margin-bottom: var(--spacing-md); }
.error-page__message { font-size: 1.1rem; color: var(--color-text-light); margin-bottom: var(--spacing-xl); }

/* Image figure (render hook) */
.image-figure { margin: var(--spacing-xl) 0; }
.image-figure img { border-radius: var(--border-radius-lg); }
.image-figure figcaption { font-size: 0.85rem; color: var(--color-text-muted); margin-top: var(--spacing-sm); text-align: center; }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 899px) {
    .nav-bar__toggle { display: flex; }
    .nav-bar__menu { display: none; position: absolute; top: 60px; left: 0; right: 0; flex-direction: column; background-color: var(--color-bg-dark); border-top: 1px solid var(--color-nav-hover); box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15); }
    .nav-bar__menu.is-open { display: flex; }
    .nav-bar__link { line-height: normal; padding: var(--spacing-md) var(--spacing-lg); border-bottom: 1px solid var(--color-nav-hover); }
    .nav-bar__item--lang { margin-left: 0; }
    .nav-bar__lang { justify-content: center; gap: var(--spacing-xl); padding: var(--spacing-md) var(--spacing-lg); }
    .hero { height: 40vh; min-height: 250px; }
    .hero__title { font-size: 1.75rem; }
    .hero__subtitle { font-size: 0.95rem; }
    .page-hero { padding: var(--spacing-xl) 0; }
    .page-hero__title { font-size: 1.5rem; }
    .content-wrapper--sidebar { grid-template-columns: 1fr; }
    .sidebar { order: 2; border-top: 1px solid var(--color-border-light); padding-top: var(--spacing-lg); margin-top: var(--spacing-lg); }
    .expertise-list { columns: 1; }
    .articles-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: var(--spacing-xl); }
    .tag-filter__item { flex-direction: column; gap: var(--spacing-xs); }
}

@media (min-width: 900px) and (max-width: 1099px) {
    .articles-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--spacing-xl); }
}

/* Hamburger animation */
.nav-bar__toggle[aria-expanded="true"] .nav-bar__toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-bar__toggle[aria-expanded="true"] .nav-bar__toggle-bar:nth-child(2) { opacity: 0; }
.nav-bar__toggle[aria-expanded="true"] .nav-bar__toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================================
   Print
   ========================================================================== */
@media print {
    .nav-bar, .hero, .page-hero, .breadcrumbs, .sidebar, .site-footer, .article__actions, .nav-bar__toggle { display: none !important; }
    body { background: white; color: black; font-size: 12pt; }
    .container { max-width: 100%; padding: 0; }
    .content-wrapper--sidebar { display: block; }
    a[href]::after { content: " (" attr(href) ")"; font-size: 0.8em; color: #666; }
    .prose a[href^="#"]::after, .prose a[href^="javascript"]::after { content: ""; }
}