@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Inter+Display:wght@400;500&display=swap');

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

:root {
  --color-primary: #181d26;
  --color-primary-active: #0d1218;
  --color-canvas: #ffffff;
  --color-surface-soft: #f8fafc;
  --color-surface-strong: #e0e2e6;
  --color-surface-dark: #181d26;
  --color-surface-dark-elevated: #1d1f25;
  --color-hairline: #dddddd;
  --color-ink: #181d26;
  --color-body: #333840;
  --color-muted: #41454d;
  --color-on-primary: #ffffff;
  --color-link: #1b61c9;
  --color-link-active: #1a3866;
  --color-signature-coral: #aa2d00;
  --color-signature-forest: #0a2e0e;
  --color-signature-cream: #f5e9d4;
  --color-signature-peach: #fcab79;
  --color-signature-mint: #a8d8c4;
  --color-signature-yellow: #f4d35e;
  --rounded-xs: 2px;
  --rounded-sm: 6px;
  --rounded-md: 10px;
  --rounded-lg: 12px;
  --spacing-xxs: 4px;
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
  --spacing-section: 96px;
  --max-width: 1280px;
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, sans-serif;
  --font-display: 'Inter Display', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  font-size: 14px;
  font-weight: 400;
  line-height: 1.25;
  color: var(--color-body);
  background-color: var(--color-canvas);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-link);
  text-decoration: none;
}

a:active {
  color: var(--color-link-active);
}

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

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

/* ── TOP NAV ─────────────────────────────────────── */
.top-nav {
  height: 64px;
  background: var(--color-canvas);
  border-bottom: 1px solid var(--color-hairline);
  position: sticky;
  top: 0;
  z-index: 100;
}

.top-nav .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-xl);
}

.nav-brand a {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 500;
  color: var(--color-ink);
  letter-spacing: -0.3px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  list-style: none;
}

.nav-menu a {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-body);
}

.nav-menu a.active,
.nav-menu a:active {
  color: var(--color-ink);
  font-weight: 500;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.4;
  padding: 16px 24px;
  border-radius: var(--rounded-lg);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary:active {
  background: var(--color-primary-active);
  color: var(--color-on-primary);
}

.btn-secondary {
  background: var(--color-canvas);
  color: var(--color-ink);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.4;
  padding: 16px 24px;
  border-radius: var(--rounded-lg);
  border: 1px solid var(--color-hairline);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  white-space: nowrap;
}

.btn-secondary:active {
  background: var(--color-surface-soft);
  color: var(--color-ink);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: var(--spacing-xs);
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-ink);
  border-radius: 2px;
  transition: all 0.2s;
}

/* ── HERO BAND ────────────────────────────────────── */
.hero-band {
  padding: var(--spacing-section) 0;
  background: var(--color-canvas);
}

.hero-band .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xxl);
  align-items: center;
}

.hero-content h1 {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-ink);
  margin-bottom: var(--spacing-lg);
  letter-spacing: -0.5px;
}

.hero-content p {
  font-size: 14px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-body);
  margin-bottom: var(--spacing-xl);
  max-width: 480px;
}

.hero-actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.hero-image {
  border-radius: var(--rounded-md);
  overflow: hidden;
  aspect-ratio: 16/10;
}

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

/* ── SECTION BANDS ────────────────────────────────── */
.section-band {
  padding: var(--spacing-section) 0;
}

.section-band.surface-soft {
  background: var(--color-surface-soft);
}

.section-band.surface-dark {
  background: var(--color-surface-dark);
  color: var(--color-on-primary);
}

.section-band.surface-dark h2,
.section-band.surface-dark p {
  color: var(--color-on-primary);
}

.section-band.surface-cream {
  background: var(--color-signature-cream);
}

.section-title {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-ink);
  margin-bottom: var(--spacing-md);
}

.section-subtitle {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-body);
  margin-bottom: var(--spacing-xxl);
  max-width: 640px;
}

/* ── SIGNATURE CARDS ──────────────────────────────── */
.signature-coral {
  background: var(--color-signature-coral);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xxl);
  color: var(--color-on-primary);
}

.signature-coral h2,
.signature-coral p {
  color: var(--color-on-primary);
}

.signature-forest {
  background: var(--color-signature-forest);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xxl);
  color: var(--color-on-primary);
}

.signature-forest h2,
.signature-forest p {
  color: var(--color-on-primary);
}

.hero-card-dark {
  background: var(--color-surface-dark);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xxl);
  color: var(--color-on-primary);
}

.hero-card-dark h2,
.hero-card-dark p {
  color: var(--color-on-primary);
}

/* ── ARTICLE CARDS GRID ───────────────────────────── */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.article-card {
  background: var(--color-canvas);
  border-radius: var(--rounded-md);
  overflow: hidden;
  border: 1px solid var(--color-hairline);
}

.article-card-thumb {
  aspect-ratio: 16/9;
  overflow: hidden;
}

.article-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-card-body {
  padding: var(--spacing-md);
}

.article-card-tag {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: var(--spacing-xs);
}

.article-card-title {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--color-ink);
  margin-bottom: var(--spacing-xs);
}

.article-card-title a {
  color: var(--color-ink);
}

.article-card-title a:active {
  color: var(--color-link);
}

.article-card-meta {
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.35;
  letter-spacing: 0.16px;
}

/* ── DEMO GRID CARDS ──────────────────────────────── */
.demo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.demo-card {
  border-radius: var(--rounded-md);
  padding: var(--spacing-md);
  overflow: hidden;
}

.demo-card.peach { background: var(--color-signature-peach); }
.demo-card.mint  { background: var(--color-signature-mint); }
.demo-card.cream { background: var(--color-signature-cream); }
.demo-card.yellow { background: var(--color-signature-yellow); }

.demo-card-label {
  font-size: 16px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--color-ink);
  margin-bottom: var(--spacing-xs);
}

.demo-card-text {
  font-size: 14px;
  color: var(--color-body);
  line-height: 1.5;
}

/* ── CTA BAND ─────────────────────────────────────── */
.cta-band-light {
  background: var(--color-surface-strong);
  padding: var(--spacing-xxl) var(--spacing-xxl);
  border-radius: var(--rounded-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-xl);
  margin: 0;
}

.cta-band-light h2 {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-ink);
  max-width: 480px;
}

/* ── CONTACT FORM ─────────────────────────────────── */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  max-width: 560px;
}

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

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

.form-group label {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ink);
}

.form-group input,
.form-group textarea {
  background: var(--color-canvas);
  color: var(--color-ink);
  font-size: 14px;
  font-weight: 400;
  font-family: var(--font-main);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-sm);
  padding: 12px 16px;
  height: 44px;
  outline: none;
  width: 100%;
}

.form-group textarea {
  height: auto;
  min-height: 120px;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: #458fff;
}

/* ── ARTICLE PAGE ─────────────────────────────────── */
.article-page {
  padding: var(--spacing-section) 0;
}

.article-page .container {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--spacing-xxl);
  align-items: start;
}

.article-content h1 {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-ink);
  margin-bottom: var(--spacing-md);
}

.article-content h2 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 400;
  line-height: 1.35;
  color: var(--color-ink);
  letter-spacing: 0.12px;
  margin: var(--spacing-xl) 0 var(--spacing-md);
}

.article-content h3 {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--color-ink);
  margin: var(--spacing-lg) 0 var(--spacing-sm);
}

.article-content p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-body);
  margin-bottom: var(--spacing-md);
}

.article-content ul,
.article-content ol {
  padding-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.article-content li {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-body);
  margin-bottom: var(--spacing-xs);
}

.article-content a {
  color: var(--color-link);
}

.article-meta {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.16px;
  color: var(--color-muted);
  margin-bottom: var(--spacing-xl);
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.article-hero-img {
  border-radius: var(--rounded-md);
  overflow: hidden;
  margin-bottom: var(--spacing-xl);
  aspect-ratio: 16/9;
}

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

.article-sidebar {
  position: sticky;
  top: 80px;
}

.sidebar-widget {
  background: var(--color-surface-soft);
  border-radius: var(--rounded-md);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

.sidebar-widget-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ink);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: var(--spacing-md);
}

.sidebar-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.sidebar-links a {
  font-size: 14px;
  color: var(--color-body);
  line-height: 1.4;
}

.sidebar-links a:active {
  color: var(--color-link);
}

/* ── INNER PAGE ───────────────────────────────────── */
.inner-page {
  padding: var(--spacing-section) 0;
  max-width: 760px;
}

.inner-page h1 {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-ink);
  margin-bottom: var(--spacing-lg);
}

.inner-page h2 {
  font-size: 24px;
  font-weight: 400;
  line-height: 1.35;
  color: var(--color-ink);
  letter-spacing: 0.12px;
  margin: var(--spacing-xl) 0 var(--spacing-md);
}

.inner-page h3 {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--color-ink);
  margin: var(--spacing-lg) 0 var(--spacing-sm);
}

.inner-page p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-body);
  margin-bottom: var(--spacing-md);
}

.inner-page ul,
.inner-page ol {
  padding-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.inner-page li {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-body);
  margin-bottom: var(--spacing-xs);
}

.page-meta {
  font-size: 13px;
  color: var(--color-muted);
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-hairline);
}

/* ── BREADCRUMB ───────────────────────────────────── */
.breadcrumb {
  font-size: 13px;
  color: var(--color-muted);
  margin-bottom: var(--spacing-xl);
  display: flex;
  gap: var(--spacing-xs);
  align-items: center;
  flex-wrap: wrap;
}

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

.breadcrumb span {
  color: var(--color-hairline);
}

/* ── FOOTER ───────────────────────────────────────── */
.site-footer {
  background: var(--color-canvas);
  border-top: 1px solid var(--color-hairline);
  padding: var(--spacing-section) 0 var(--spacing-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.footer-brand p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
  margin-top: var(--spacing-md);
  max-width: 280px;
}

.footer-col-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ink);
  margin-bottom: var(--spacing-md);
}

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

.footer-links a {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.25;
}

.footer-links a:active {
  color: var(--color-ink);
}

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

.footer-bottom p {
  font-size: 14px;
  color: var(--color-muted);
}

.footer-legal {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
}

.footer-legal a {
  font-size: 14px;
  color: var(--color-muted);
}

/* ── COOKIE BANNER ────────────────────────────────── */
#cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-surface-dark);
  color: var(--color-on-primary);
  padding: var(--spacing-lg) var(--spacing-xxl);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

#cookie-banner p {
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-on-primary);
  max-width: 680px;
}

#cookie-banner p a {
  color: #79a8f5;
}

.cookie-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.btn-cookie-accept,
.btn-cookie-reject {
  font-size: 13.12px;
  font-weight: 600;
  padding: 12px 10px;
  border-radius: var(--rounded-xs);
  border: none;
  cursor: pointer;
  white-space: nowrap;
}

.btn-cookie-accept {
  background: var(--color-link);
  color: var(--color-on-primary);
}

.btn-cookie-reject {
  background: transparent;
  color: var(--color-on-primary);
  border: 1px solid rgba(255,255,255,0.3);
}

/* ── ABOUT PAGE ───────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xxl);
  align-items: start;
  margin-top: var(--spacing-xxl);
}

.contact-info-block {
  background: var(--color-surface-soft);
  border-radius: var(--rounded-md);
  padding: var(--spacing-xl);
}

.contact-info-block p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-body);
  margin-bottom: var(--spacing-sm);
}

.contact-info-block a {
  color: var(--color-link);
}

/* ── RESPONSIVE ───────────────────────────────────── */
@media (max-width: 1024px) {
  .demo-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .article-page .container {
    grid-template-columns: 1fr;
  }

  .article-sidebar {
    position: static;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }

  .nav-menu,
  .nav-actions {
    display: none;
  }

  .nav-menu.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-canvas);
    padding: var(--spacing-xl);
    gap: var(--spacing-lg);
    z-index: 99;
    overflow-y: auto;
  }

  .nav-actions.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: auto;
    bottom: var(--spacing-xxl);
    left: var(--spacing-xl);
    right: var(--spacing-xl);
    z-index: 100;
  }

  .hamburger {
    display: flex;
  }

  .hero-band .container {
    grid-template-columns: 1fr;
  }

  .hero-content h1 {
    font-size: 28px;
  }

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

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

  .cta-band-light {
    flex-direction: column;
    align-items: flex-start;
  }

  .cta-band-light h2 {
    font-size: 24px;
  }

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

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

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

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  #cookie-banner {
    padding: var(--spacing-md);
    flex-direction: column;
    align-items: flex-start;
  }

  .section-title {
    font-size: 24px;
  }
}