/* ============================================================
   NomadTechCareer.com — Design System
   Traveler meets builder. Personal, not corporate.
   ============================================================ */

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

:root {
  --color-bg: #ffffff;
  --color-surface: #f7f8fa;
  --color-dark: #1a1a2e;
  --color-dark-mid: #16213e;
  --color-accent: #E8920A;
  --color-accent-hover: #C47808;
  --color-text: #2d2d3a;
  --color-text-light: #55556d;
  --color-muted: #8888a0;
  --color-border: #e2e4ea;
  --color-border-light: #eff0f3;
  --color-white: #ffffff;
  --color-card-bg: #ffffff;
  --color-tag-bg: rgba(232, 146, 10, 0.14);
  --color-tag-text: #9A6200;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Plus Jakarta Sans', 'Inter', -apple-system, sans-serif;
  --max-width: 1120px;
  --content-width: 720px;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 3px rgba(26, 26, 46, 0.06);
  --shadow-md: 0 4px 16px rgba(26, 26, 46, 0.08);
  --shadow-lg: 0 8px 32px rgba(26, 26, 46, 0.10);
  --transition: 0.2s ease;
}

html { font-size: 16px; scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
}

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

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

/* --- Layout --- */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: var(--content-width); margin: 0 auto; padding: 0 24px; }

/* --- Navigation --- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-dark);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  backdrop-filter: blur(12px);
}
.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-white);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}
.nav-logo .logo-accent { color: var(--color-accent); }
.nav-links {
  display: flex;
  list-style: none;
  gap: 28px;
  align-items: center;
}
.nav-links a {
  color: rgba(255,255,255,0.75);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--color-white); }

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-white);
  margin: 5px 0;
  transition: var(--transition);
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--color-dark);
    flex-direction: column;
    padding: 16px 24px 24px;
    gap: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .nav-links.open { display: flex; }
}

/* --- Hero --- */
.hero {
  background: var(--color-dark);
  color: var(--color-white);
  padding: 80px 24px 72px;
  text-align: center;
}
.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 16px;
}
.hero h1 .accent { color: var(--color-accent); }
.hero .subtitle {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: rgba(255,255,255,0.7);
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.6;
}
.hero-tags {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-tag {
  display: inline-block;
  padding: 6px 16px;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 20px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  transition: all var(--transition);
}
.hero-tag:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* --- Sections --- */
.section {
  padding: 64px 24px;
}
.section-dark {
  background: var(--color-surface);
}
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: 8px;
}
.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-dark);
  margin-bottom: 12px;
}
.section-subtitle {
  color: var(--color-text-light);
  max-width: 520px;
  font-size: 1rem;
}

/* --- Card Grid --- */
.card-grid {
  display: grid;
  gap: 20px;
  margin-top: 32px;
}
.card-grid-2 { grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); }
.card-grid-3 { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

.card-link {
  text-decoration: none;
  color: inherit;
  display: block;
}
.card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
}
.card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.card .tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  border-radius: 4px;
  background: var(--color-tag-bg);
  color: var(--color-tag-text);
}
.card h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-dark);
  margin: 12px 0 8px;
  line-height: 1.35;
}
.card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 12px;
}
.card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 0.8rem;
  color: var(--color-muted);
}
.card-cta {
  font-size: 0.85rem;
  color: var(--color-accent);
  font-weight: 600;
}

/* --- Article / Guide Page --- */
.article-page {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 48px 24px 80px;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.article-meta .tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  border-radius: 4px;
  background: var(--color-tag-bg);
  color: var(--color-tag-text);
}
.article-meta .author,
.article-meta time {
  font-size: 0.85rem;
  color: var(--color-muted);
}
.article-page h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-dark);
  line-height: 1.2;
  margin-bottom: 20px;
}
.article-intro {
  font-size: 1.1rem;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-border);
}
.article-content h2 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-dark);
  margin: 40px 0 16px;
  letter-spacing: -0.01em;
}
.article-content p {
  margin-bottom: 20px;
  line-height: 1.8;
  color: var(--color-text);
}
.article-content strong { color: var(--color-dark); }

/* Quick Facts (City Guides) */
.quick-facts {
  background: var(--color-dark);
  border-radius: var(--radius);
  padding: 28px 32px;
  margin: 32px 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 20px;
}
.quick-fact {
  text-align: center;
}
.quick-fact-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: 4px;
}
.quick-fact-value {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-white);
}

/* FAQ Block */
.faq-block {
  margin-top: 48px;
  padding-top: 48px;
  border-top: 1px solid var(--color-border);
}
.faq-block h2 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 24px;
}
.faq-item {
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border-light);
}
.faq-item:last-child { border-bottom: none; padding-bottom: 0; }
.faq-item h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 8px;
}
.faq-item p {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* Related Section */
.related-section {
  margin-top: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--color-border);
}
.related-section h2 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 24px;
}

/* CTA Block */
.cta-block {
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-mid) 100%);
  border-radius: var(--radius);
  padding: 36px 32px;
  margin: 48px 0;
  text-align: center;
}
.cta-block h3 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 10px;
}
.cta-block p {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.7);
  max-width: 480px;
  margin: 0 auto 20px;
  line-height: 1.6;
}
.cta-block a {
  display: inline-block;
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.95rem;
}
.cta-block a:hover { color: var(--color-white); }

/* --- Hub / Index Pages --- */
.hub-header {
  background: var(--color-dark);
  color: var(--color-white);
  padding: 56px 24px 48px;
  text-align: center;
}
.hub-header h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.hub-header p {
  color: rgba(255,255,255,0.7);
  max-width: 520px;
  margin: 0 auto;
  font-size: 1.05rem;
}

/* Filter buttons */
.filter-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.filter-btn {
  padding: 6px 16px;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  background: var(--color-white);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-light);
  cursor: pointer;
  transition: all var(--transition);
}
.filter-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.filter-btn.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-white);
}

/* --- Footer --- */
.site-footer {
  background: var(--color-dark);
  color: rgba(255,255,255,0.7);
  padding: 56px 24px 32px;
  margin-top: 0;
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
}
.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.6;
  margin-top: 12px;
}
.footer-brand a { color: var(--color-accent); }
.footer-brand a:hover { color: var(--color-white); }
.footer-logo-text {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-white);
}
.footer-col h4 {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
}
.footer-col a:hover { color: var(--color-white); }
.footer-bottom {
  max-width: var(--max-width);
  margin: 40px auto 0;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
}
.footer-bottom .ai-badge {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.35);
  padding: 4px 10px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 4px;
}

@media (max-width: 768px) {
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* --- Utilities --- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* --- Homepage Sections --- */
.home-section {
  padding: 64px 24px;
}
.home-section .container {
  max-width: var(--max-width);
  margin: 0 auto;
}
.home-section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 32px;
  flex-wrap: wrap;
  gap: 12px;
}
.home-section-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-accent);
}
.home-section-link:hover { color: var(--color-accent-hover); }

/* --- Responsive --- */
@media (max-width: 480px) {
  .hero { padding: 56px 20px 48px; }
  .section { padding: 48px 20px; }
  .card { padding: 22px; }
  .quick-facts { grid-template-columns: 1fr 1fr; padding: 22px; }
  .article-page { padding: 32px 20px 64px; }
}