/* ============================================================
   SEGMENTLINE DESK — main.css
   Design: DESIGN-bugatti.md (adapted for editorial)
   ============================================================ */

/* === DESIGN TOKENS === */
:root {
  --c-canvas: #000000;
  --c-surface-soft: #0d0d0d;
  --c-surface-card: #141414;
  --c-surface-elevated: #1f1f1f;
  --c-hairline: #262626;
  --c-hairline-strong: #3a3a3a;
  --c-primary: #ffffff;
  --c-body: #cccccc;
  --c-body-strong: #e6e6e6;
  --c-muted: #999999;
  --c-muted-soft: #666666;
  --c-link: #c3d9f3;
  --c-on-dark: #ffffff;

  --ff-display: "Segoe UI", system-ui, -apple-system, Arial, sans-serif;
  --ff-body: Georgia, "Times New Roman", serif;
  --ff-mono: "Courier New", ui-monospace, monospace;

  --r-none: 0px;
  --r-pill: 9999px;

  --sp-xxs: 4px;
  --sp-xs: 8px;
  --sp-sm: 12px;
  --sp-md: 16px;
  --sp-lg: 24px;
  --sp-xl: 40px;
  --sp-xxl: 64px;
  --sp-section: 120px;

  --max-w: 1280px;
  --header-h: 72px;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  background: var(--c-canvas);
  color: var(--c-body);
  font-family: var(--ff-body);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
}

img { display: block; max-width: 100%; height: auto; }
a { color: var(--c-link); text-decoration: underline; }
a:hover { color: var(--c-primary); }

/* === LAYOUT === */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--sp-xl);
}

.section-gap { padding-top: var(--sp-section); padding-bottom: var(--sp-section); }
.section-gap-sm { padding-top: var(--sp-xxl); padding-bottom: var(--sp-xxl); }

/* === TYPOGRAPHY === */
h1, h2, h3, h4 {
  font-family: var(--ff-display);
  font-weight: 400;
  color: var(--c-on-dark);
  text-transform: uppercase;
  letter-spacing: 3px;
  line-height: 1.1;
}

h1 { font-size: clamp(28px, 5vw, 56px); letter-spacing: 4px; }
h2 { font-size: clamp(22px, 3.5vw, 36px); letter-spacing: 3px; }
h3 { font-size: clamp(16px, 2.5vw, 24px); letter-spacing: 2px; }
h4 { font-size: 16px; letter-spacing: 2px; text-transform: uppercase; }

p { font-family: var(--ff-body); color: var(--c-body); line-height: 1.7; margin-bottom: var(--sp-md); }
p:last-child { margin-bottom: 0; }

.lead {
  font-family: var(--ff-body);
  font-size: 18px;
  color: var(--c-body-strong);
  line-height: 1.6;
}

.caption {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--c-muted);
}

.overline {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--c-muted);
  display: block;
  margin-bottom: var(--sp-sm);
}

/* === BUTTONS === */
.btn {
  display: inline-block;
  font-family: var(--ff-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--c-on-dark);
  background: transparent;
  border: 1px solid var(--c-on-dark);
  border-radius: var(--r-pill);
  padding: 12px 28px;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  white-space: nowrap;
}
.btn:hover {
  background: var(--c-on-dark);
  color: var(--c-canvas);
}
.btn-sm { font-size: 11px; padding: 9px 20px; letter-spacing: 2px; }

/* === DIVIDERS === */
hr { border: none; border-top: 1px solid var(--c-hairline); margin: var(--sp-xl) 0; }
.divider { border-top: 1px solid var(--c-hairline); }

/* === HEADER === */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.95);
  border-bottom: 1px solid var(--c-hairline);
  height: var(--header-h);
  display: flex;
  align-items: center;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.site-logo {
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-wordmark {
  font-family: var(--ff-display);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 5px;
  text-transform: uppercase;
  color: var(--c-on-dark);
  line-height: 1;
}

.logo-tagline {
  font-family: var(--ff-mono);
  font-size: 9px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--c-muted);
  line-height: 1;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--sp-xl);
}

.nav-link {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--c-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.nav-link:hover, .nav-link.active { color: var(--c-on-dark); }

.burger-btn {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: var(--sp-xs);
  flex-direction: column;
  gap: 5px;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
}
.burger-btn span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--c-on-dark);
  transition: transform 0.3s, opacity 0.3s;
}

.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--c-canvas);
  z-index: 99;
  padding: var(--sp-xxl) var(--sp-xl);
  flex-direction: column;
  gap: var(--sp-xl);
  border-top: 1px solid var(--c-hairline);
  overflow-y: auto;
}
.mobile-nav.open { display: flex; }
.mobile-nav .nav-link {
  font-size: 14px;
  letter-spacing: 3px;
  color: var(--c-on-dark);
  padding: var(--sp-md) 0;
  border-bottom: 1px solid var(--c-hairline);
}

/* === HERO === */
.hero {
  min-height: 75vh;
  display: flex;
  align-items: flex-end;
  position: relative;
  overflow: hidden;
  background: var(--c-surface-soft);
}

.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.45;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: var(--sp-xxl) 0;
  width: 100%;
}

.hero-content .container {
  display: flex;
  flex-direction: column;
  gap: var(--sp-lg);
}

.hero h1 { max-width: 800px; }

.hero-summary {
  font-family: var(--ff-body);
  font-size: 17px;
  color: var(--c-body-strong);
  max-width: 560px;
  line-height: 1.65;
}

/* === CONTENT CARDS === */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-xl);
}

.card {
  background: var(--c-surface-card);
  border: 1px solid var(--c-hairline);
  padding: 0;
  display: flex;
  flex-direction: column;
}

.card-image {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--c-surface-soft);
}

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

.card-image-placeholder {
  width: 100%;
  height: 100%;
  background: var(--c-surface-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-body {
  padding: var(--sp-lg);
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
  flex: 1;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
}

.card-category {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--c-muted);
}

.card-date {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 1.5px;
  color: var(--c-muted-soft);
}

.card h3 {
  font-size: 16px;
  letter-spacing: 1.5px;
  color: var(--c-on-dark);
  line-height: 1.3;
  text-transform: uppercase;
}

.card p {
  font-size: 14px;
  color: var(--c-muted);
  flex: 1;
}

.card-link {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--c-muted);
  text-decoration: none;
  margin-top: auto;
  padding-top: var(--sp-sm);
  transition: color 0.2s;
  border-top: 1px solid var(--c-hairline);
  padding-top: var(--sp-sm);
}
.card-link:hover { color: var(--c-on-dark); }

/* === FEATURED ARTICLE (home) === */
.featured-article {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-xxl);
  align-items: center;
}

.featured-article-image {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--c-surface-card);
}

.featured-article-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.featured-article-content {
  display: flex;
  flex-direction: column;
  gap: var(--sp-lg);
}

.featured-article-content h2 {
  font-size: clamp(18px, 2.5vw, 28px);
  letter-spacing: 2px;
}

.featured-article-content p {
  font-size: 15px;
  color: var(--c-body);
}

/* === SECTION HEADERS === */
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--sp-xl);
  padding-bottom: var(--sp-md);
  border-bottom: 1px solid var(--c-hairline);
}

.section-header h2 { font-size: 18px; letter-spacing: 3px; }

/* === ARTICLE PAGE === */
.article-header {
  padding-top: var(--sp-xxl);
  padding-bottom: var(--sp-xxl);
  border-bottom: 1px solid var(--c-hairline);
}

.article-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-md);
  align-items: center;
  margin-bottom: var(--sp-xl);
}

.article-meta-item {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--c-muted);
}

.article-meta-item + .article-meta-item::before {
  content: "·";
  margin-right: var(--sp-md);
  color: var(--c-hairline-strong);
}

.article-title {
  font-size: clamp(24px, 4vw, 48px);
  letter-spacing: 3px;
  margin-bottom: var(--sp-lg);
  max-width: 860px;
}

.article-summary {
  font-family: var(--ff-body);
  font-size: 17px;
  color: var(--c-body-strong);
  max-width: 680px;
  line-height: 1.7;
  border-left: 2px solid var(--c-hairline-strong);
  padding-left: var(--sp-lg);
}

.article-hero-image {
  width: 100%;
  aspect-ratio: 16/7;
  object-fit: cover;
  object-position: center;
  display: block;
}

.article-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--sp-xxl);
  align-items: start;
  padding-top: var(--sp-xxl);
}

.article-sidebar { position: sticky; top: calc(var(--header-h) + var(--sp-xl)); }

.toc-label {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--c-muted);
  margin-bottom: var(--sp-md);
  display: block;
}

.toc-list { list-style: none; display: flex; flex-direction: column; gap: var(--sp-xs); }

.toc-list li a {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--c-muted);
  text-decoration: none;
  text-transform: uppercase;
  transition: color 0.2s;
  line-height: 1.4;
  display: block;
}
.toc-list li a:hover { color: var(--c-on-dark); }

.article-body { max-width: 720px; }

.article-body h2 {
  font-size: 18px;
  letter-spacing: 3px;
  margin-top: var(--sp-xxl);
  margin-bottom: var(--sp-lg);
  padding-top: var(--sp-md);
  border-top: 1px solid var(--c-hairline);
  scroll-margin-top: calc(var(--header-h) + var(--sp-xl));
}

.article-body h3 {
  font-size: 14px;
  letter-spacing: 2px;
  margin-top: var(--sp-xl);
  margin-bottom: var(--sp-md);
}

.article-body p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-body);
  margin-bottom: var(--sp-lg);
}

.article-body ul, .article-body ol {
  padding-left: var(--sp-xl);
  margin-bottom: var(--sp-lg);
  display: flex;
  flex-direction: column;
  gap: var(--sp-xs);
}

.article-body li {
  font-family: var(--ff-body);
  font-size: 16px;
  color: var(--c-body);
  line-height: 1.7;
}

.callout-box {
  background: var(--c-surface-card);
  border-left: 2px solid var(--c-hairline-strong);
  padding: var(--sp-lg) var(--sp-xl);
  margin: var(--sp-xl) 0;
}

.callout-box .callout-label {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--c-muted);
  margin-bottom: var(--sp-sm);
}

.callout-box p {
  font-size: 15px;
  color: var(--c-body-strong);
  margin: 0;
}

.not-cover-box {
  background: var(--c-surface-soft);
  border: 1px solid var(--c-hairline);
  padding: var(--sp-lg) var(--sp-xl);
  margin: var(--sp-xxl) 0;
}

.not-cover-box h3 {
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--c-muted);
  margin-bottom: var(--sp-md);
}

/* === BREADCRUMBS === */
.breadcrumbs {
  padding: var(--sp-lg) 0;
  border-bottom: 1px solid var(--c-hairline);
}

.breadcrumbs-list {
  list-style: none;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-xs);
}

.breadcrumbs-list li {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--c-muted-soft);
  display: flex;
  align-items: center;
  gap: var(--sp-xs);
}

.breadcrumbs-list li::after {
  content: "/";
  color: var(--c-hairline-strong);
  margin-left: var(--sp-xs);
}
.breadcrumbs-list li:last-child::after { display: none; }

.breadcrumbs-list a {
  color: var(--c-muted);
  text-decoration: none;
}
.breadcrumbs-list a:hover { color: var(--c-on-dark); }
.breadcrumbs-list li:last-child { color: var(--c-body); }

/* === INTERNAL PAGE CONTENT === */
.page-hero {
  padding: var(--sp-xxl) 0;
  border-bottom: 1px solid var(--c-hairline);
}

.page-hero h1 {
  font-size: clamp(22px, 3.5vw, 40px);
  letter-spacing: 4px;
  margin-bottom: var(--sp-md);
}

.page-hero .lead {
  max-width: 600px;
  color: var(--c-body);
}

.page-content {
  max-width: 760px;
  padding: var(--sp-xxl) 0;
}

.page-content h2 {
  font-size: 16px;
  letter-spacing: 3px;
  margin-top: var(--sp-xl);
  margin-bottom: var(--sp-md);
  padding-top: var(--sp-md);
  border-top: 1px solid var(--c-hairline);
}

.page-content h2:first-child { border-top: none; padding-top: 0; margin-top: 0; }

.page-content p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-body);
  margin-bottom: var(--sp-md);
}

.page-content ul {
  padding-left: var(--sp-xl);
  margin-bottom: var(--sp-md);
  display: flex;
  flex-direction: column;
  gap: var(--sp-xs);
}

.page-content li {
  font-size: 15px;
  color: var(--c-body);
  line-height: 1.7;
}

/* === CONTACT FORM === */
.contact-form { max-width: 560px; }

.form-group { margin-bottom: var(--sp-xl); }

.form-label {
  display: block;
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--c-muted);
  margin-bottom: var(--sp-sm);
}

.form-input,
.form-textarea {
  display: block;
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--c-hairline-strong);
  color: var(--c-on-dark);
  font-family: var(--ff-body);
  font-size: 15px;
  padding: var(--sp-sm) 0;
  outline: none;
  transition: border-color 0.2s;
}

.form-input:focus, .form-textarea:focus { border-color: var(--c-on-dark); }
.form-input::placeholder, .form-textarea::placeholder { color: var(--c-muted-soft); }

.form-textarea { min-height: 120px; resize: vertical; font-family: var(--ff-body); }

.form-success {
  display: none;
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--c-muted);
  padding: var(--sp-xl) 0;
  border-top: 1px solid var(--c-hairline);
  margin-top: var(--sp-xl);
}

/* === FOOTER === */
.site-footer {
  background: var(--c-canvas);
  border-top: 1px solid var(--c-hairline);
  padding: var(--sp-xxl) 0 var(--sp-xl);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--sp-xxl);
  margin-bottom: var(--sp-xxl);
}

.footer-col-brand .logo-wordmark { font-size: 11px; letter-spacing: 5px; }
.footer-col-brand .logo-tagline { margin-top: var(--sp-xs); }

.footer-col-brand p {
  font-size: 13px;
  color: var(--c-muted-soft);
  margin-top: var(--sp-md);
  line-height: 1.6;
}

.footer-col-label {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--c-muted-soft);
  margin-bottom: var(--sp-lg);
  display: block;
}

.footer-nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
}

.footer-nav a {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--c-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-nav a:hover { color: var(--c-on-dark); }

.footer-bottom {
  border-top: 1px solid var(--c-hairline);
  padding-top: var(--sp-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--sp-md);
}

.footer-copyright {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 1.5px;
  color: var(--c-muted-soft);
}

.footer-disclaimer-note {
  font-family: var(--ff-body);
  font-size: 12px;
  color: var(--c-muted-soft);
  max-width: 480px;
  text-align: right;
}

/* === COOKIE BANNER === */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: var(--c-surface-elevated);
  border-top: 1px solid var(--c-hairline-strong);
  padding: var(--sp-lg) var(--sp-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-xl);
  flex-wrap: wrap;
}

.cookie-banner.hidden { display: none; }

.cookie-text {
  font-size: 13px;
  color: var(--c-muted);
  flex: 1;
  min-width: 200px;
}

.cookie-text a { color: var(--c-link); }

.cookie-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
  flex-wrap: wrap;
}

.cookie-btn {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 8px 18px;
  border: 1px solid var(--c-hairline-strong);
  background: transparent;
  color: var(--c-muted);
  cursor: pointer;
  border-radius: var(--r-pill);
  transition: border-color 0.2s, color 0.2s;
  text-decoration: none;
  display: inline-block;
}

.cookie-btn:hover { border-color: var(--c-on-dark); color: var(--c-on-dark); }
.cookie-btn-accept { border-color: var(--c-on-dark); color: var(--c-on-dark); }

/* === SCHEMA / SKIP LINK === */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--sp-lg);
  background: var(--c-on-dark);
  color: var(--c-canvas);
  padding: var(--sp-sm) var(--sp-md);
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 1px;
  text-decoration: none;
  z-index: 9999;
}
.skip-link:focus { top: var(--sp-md); }

/* === EDITORIAL SUMMARY BLOCK === */
.editorial-summary-band {
  background: var(--c-surface-card);
  border-top: 1px solid var(--c-hairline);
  border-bottom: 1px solid var(--c-hairline);
}

.editorial-summary-band .container {
  padding-top: var(--sp-xxl);
  padding-bottom: var(--sp-xxl);
}

/* === GALLERY STRIP === */
.gallery-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--c-hairline);
}

.gallery-item {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--c-surface-card);
  position: relative;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: opacity 0.3s;
}

.gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--sp-sm) var(--sp-md);
  background: linear-gradient(transparent, rgba(0,0,0,0.75));
  font-family: var(--ff-mono);
  font-size: 9px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
}

/* === RESPONSIVE === */
@media (max-width: 1024px) {
  .container { padding: 0 var(--sp-lg); }
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .featured-article { grid-template-columns: 1fr; gap: var(--sp-xl); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --sp-section: 72px; --header-h: 64px; }

  .site-nav { display: none; }
  .burger-btn { display: flex; }

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

  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar { position: static; }

  .gallery-strip { grid-template-columns: 1fr 1fr; }

  .footer-inner { grid-template-columns: 1fr; gap: var(--sp-xl); }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .footer-disclaimer-note { text-align: left; }

  .cookie-banner { flex-direction: column; align-items: flex-start; }

  h1 { font-size: clamp(22px, 7vw, 36px); }
  h2 { font-size: clamp(18px, 5vw, 28px); }
}

@media (max-width: 480px) {
  .article-meta-row { flex-direction: column; gap: var(--sp-xs); align-items: flex-start; }
  .article-meta-item + .article-meta-item::before { display: none; }
  .gallery-strip { grid-template-columns: 1fr; }
  .section-header { flex-direction: column; gap: var(--sp-sm); align-items: flex-start; }
}