/* ============================================
   Concretely — Concrete DIY & Interior
   Editorial Magazine Style
============================================ */

:root {
  /* Warm concrete palette */
  --bg: #F5F2ED;
  --surface: #FFFFFF;
  --surface-warm: #FAF7F2;
  --text: #1F1E1C;
  --text-soft: #5A5753;
  --text-muted: #8B8680;
  --border: #E8E3DB;
  --border-strong: #D4CEC3;

  /* Accents */
  --concrete: #8B8680;
  --terracotta: #C66B4C;
  --terracotta-dark: #A85538;
  --sand: #D4A574;

  --shadow-sm: 0 1px 2px rgba(31,30,28,0.04);
  --shadow-md: 0 8px 20px rgba(31,30,28,0.06);
  --shadow-lg: 0 24px 56px rgba(31,30,28,0.12);

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --nav-h: 72px;
  --max-w: 1240px;

  --font-display: 'Fraunces', 'Pretendard', Georgia, serif;
  --font-body: 'Pretendard', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  padding-top: var(--nav-h);
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
img { max-width: 100%; display: block; }

/* Concrete grain texture overlay on body */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(139,134,128,0.03) 1px, transparent 1px),
    radial-gradient(circle at 70% 80%, rgba(139,134,128,0.02) 1px, transparent 1px);
  background-size: 3px 3px, 5px 5px;
  pointer-events: none;
  z-index: 1;
}

/* ============================================
   Top Navigation
============================================ */
.topnav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(245, 242, 237, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.topnav-inner {
  height: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.logo {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 28px;
  letter-spacing: -0.5px;
  color: var(--text);
  font-style: italic;
}

.logo-dot {
  width: 8px; height: 8px;
  background: var(--terracotta);
  border-radius: 50%;
  display: inline-block;
  transform: translateY(-3px);
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-soft);
  transition: color 0.2s ease;
  position: relative;
  padding: 4px 0;
}
.nav-links a:hover { color: var(--text); }
.nav-links a.active {
  color: var(--text);
}
.nav-links a.active::after {
  content: "";
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 2px;
  background: var(--terracotta);
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .topnav-inner { padding: 0 20px; }
  .logo { font-size: 24px; }
}

/* Mobile menu button */
.menu-toggle {
  display: none;
  font-size: 22px;
  padding: 8px;
}
@media (max-width: 768px) {
  .menu-toggle { display: block; }
}

.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-h); left: 0; right: 0;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 20px;
  z-index: 99;
}
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  font-size: 16px;
  font-weight: 500;
}
.mobile-menu a:last-child { border-bottom: none; }

/* ============================================
   Container
============================================ */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 28px;
  position: relative;
  z-index: 2;
}
@media (max-width: 640px) {
  .container { padding: 0 20px; }
}

/* ============================================
   Hero Section
============================================ */
.hero {
  padding: 60px 0 30px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 40px;
  align-items: stretch;
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 24px; }
}

.hero-featured {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--concrete);
}
.hero-featured img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.hero-featured:hover img { transform: scale(1.04); }
.hero-featured-overlay {
  position: absolute;
  inset: 0;
  padding: 36px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  color: white;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.15) 50%, transparent 100%);
}
.hero-tag {
  display: inline-block;
  width: fit-content;
  padding: 6px 14px;
  background: var(--terracotta);
  color: white;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  border-radius: 100px;
  margin-bottom: 18px;
}
.hero-featured h2 {
  font-family: var(--font-display);
  font-size: 42px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 14px;
  font-style: italic;
}
@media (max-width: 640px) {
  .hero-featured h2 { font-size: 28px; }
  .hero-featured-overlay { padding: 22px; }
}
.hero-featured .meta {
  font-size: 13px;
  opacity: 0.9;
  display: flex;
  gap: 12px;
}

.hero-side {
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: 24px;
}
@media (max-width: 900px) {
  .hero-side { grid-template-columns: 1fr 1fr; grid-template-rows: auto; }
}
@media (max-width: 520px) {
  .hero-side { grid-template-columns: 1fr; }
}

.hero-small {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--concrete);
}
.hero-small img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.hero-small:hover img { transform: scale(1.05); }
.hero-small-overlay {
  position: absolute;
  inset: 0;
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  color: white;
  background: linear-gradient(to top, rgba(0,0,0,0.65) 0%, transparent 60%);
}
.hero-small h3 {
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1.25;
  margin-top: 8px;
  font-weight: 600;
}
.hero-small .category {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--sand);
}

/* ============================================
   Section Heading
============================================ */
.section {
  padding: 50px 0;
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
.section-title {
  font-family: var(--font-display);
  font-size: 36px;
  letter-spacing: -0.8px;
  font-weight: 700;
  font-style: italic;
}
@media (max-width: 640px) {
  .section-title { font-size: 28px; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 10px; }
}
.section-sub {
  font-size: 14px;
  color: var(--text-muted);
  max-width: 400px;
  font-weight: 500;
}

/* ============================================
   Category Tabs (filter)
============================================ */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}
.tab {
  padding: 10px 18px;
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-soft);
  transition: all 0.2s ease;
  cursor: pointer;
}
.tab:hover {
  border-color: var(--text);
  color: var(--text);
}
.tab.active {
  background: var(--text);
  border-color: var(--text);
  color: white;
}

/* ============================================
   Card Grid
============================================ */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
}
@media (max-width: 540px) {
  .grid { grid-template-columns: 1fr; }
}

.card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1),
              box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  cursor: pointer;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.card-media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--concrete);
}
.card-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.card:hover .card-media img { transform: scale(1.05); }

.card-body {
  padding: 20px 22px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.card-category {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--terracotta);
}
.card-difficulty {
  font-size: 11px;
  color: var(--text-muted);
  padding: 2px 8px;
  background: var(--bg);
  border-radius: 100px;
  font-weight: 600;
}
.card-title {
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1.3;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.3px;
  color: var(--text);
}
.card-excerpt {
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.55;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  margin-top: auto;
  font-size: 12px;
  color: var(--text-muted);
}
.card-author {
  display: flex;
  align-items: center;
  gap: 8px;
}
.card-author img {
  width: 24px; height: 24px;
  border-radius: 50%;
  object-fit: cover;
}

/* ============================================
   Quote Band
============================================ */
.quote-band {
  background: var(--text);
  color: var(--surface);
  padding: 80px 0;
  margin: 60px 0;
  position: relative;
  overflow: hidden;
}
.quote-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(198,107,76,0.15), transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(212,165,116,0.1), transparent 50%);
}
.quote-band-inner {
  position: relative;
  max-width: 780px;
  margin: 0 auto;
  padding: 0 28px;
  text-align: center;
}
.quote-mark {
  font-family: var(--font-display);
  font-size: 84px;
  color: var(--terracotta);
  line-height: 1;
  font-style: italic;
}
.quote-text {
  font-family: var(--font-display);
  font-size: 30px;
  line-height: 1.4;
  font-weight: 400;
  font-style: italic;
  margin: 10px 0 24px;
  letter-spacing: -0.3px;
}
@media (max-width: 640px) {
  .quote-text { font-size: 22px; }
  .quote-band { padding: 60px 0; margin: 40px 0; }
}
.quote-author {
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--sand);
  font-weight: 600;
}

/* ============================================
   Guide/Tour Detail Pages
============================================ */
.article {
  max-width: 820px;
  margin: 0 auto;
  padding: 50px 28px 80px;
  position: relative;
  z-index: 2;
}
@media (max-width: 640px) {
  .article { padding: 30px 20px 60px; }
}

.article-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--terracotta);
  margin-bottom: 16px;
}
.article-kicker::before {
  content: "";
  width: 24px; height: 1px;
  background: var(--terracotta);
}

.article-title {
  font-family: var(--font-display);
  font-size: 52px;
  line-height: 1.08;
  letter-spacing: -1.5px;
  font-weight: 700;
  margin-bottom: 20px;
  font-style: italic;
}
@media (max-width: 640px) {
  .article-title { font-size: 34px; }
}

.article-lead {
  font-size: 19px;
  line-height: 1.6;
  color: var(--text-soft);
  margin-bottom: 32px;
  max-width: 680px;
  font-weight: 400;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 18px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 40px;
  font-size: 13px;
  color: var(--text-muted);
  flex-wrap: wrap;
}
.article-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}
.article-meta-item strong {
  color: var(--text);
  font-weight: 600;
}

.article-hero {
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: 40px 0;
  background: var(--concrete);
}
.article-hero img {
  width: 100%; height: 100%;
  object-fit: cover;
}

.article-content h2 {
  font-family: var(--font-display);
  font-size: 30px;
  letter-spacing: -0.4px;
  margin: 50px 0 16px;
  font-weight: 700;
}
.article-content h3 {
  font-family: var(--font-display);
  font-size: 22px;
  margin: 32px 0 12px;
  font-weight: 600;
}
.article-content p {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-soft);
  margin-bottom: 20px;
}
.article-content strong {
  color: var(--text);
  font-weight: 700;
}
.article-content ul, .article-content ol {
  margin: 20px 0 28px;
  padding-left: 22px;
  color: var(--text-soft);
}
.article-content li {
  font-size: 17px;
  line-height: 1.75;
  margin-bottom: 10px;
}
.article-content blockquote {
  border-left: 3px solid var(--terracotta);
  padding: 4px 0 4px 20px;
  margin: 28px 0;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 21px;
  color: var(--text);
  line-height: 1.5;
}

/* Step Cards */
.steps {
  counter-reset: step;
  margin: 32px 0;
  display: grid;
  gap: 20px;
}
.step {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 26px;
  position: relative;
  counter-increment: step;
}
.step::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  top: 22px;
  right: 24px;
  font-family: var(--font-display);
  font-size: 42px;
  font-weight: 700;
  color: var(--border-strong);
  font-style: italic;
  line-height: 1;
}
.step h4 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
  padding-right: 60px;
}
.step p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-soft);
  margin: 0;
}

/* Info Box */
.info-box {
  background: var(--surface-warm);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  margin: 32px 0;
}
.info-box .label {
  display: inline-block;
  padding: 4px 12px;
  background: var(--terracotta);
  color: white;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  border-radius: 100px;
  margin-bottom: 12px;
}
.info-box h4 {
  font-family: var(--font-display);
  font-size: 18px;
  margin-bottom: 8px;
  font-weight: 600;
}
.info-box p {
  font-size: 14px;
  color: var(--text-soft);
  margin: 0;
  line-height: 1.6;
}

/* Materials list */
.materials {
  background: var(--text);
  color: white;
  border-radius: var(--radius-lg);
  padding: 32px;
  margin: 36px 0;
}
.materials h3 {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 22px;
  margin-bottom: 18px;
  color: var(--sand);
}
.materials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px 24px;
}
.material-item {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  font-size: 14px;
}
.material-item .name { opacity: 0.9; }
.material-item .qty { font-weight: 700; color: var(--sand); }

/* ============================================
   Static Content Pages
============================================ */
.page {
  max-width: 780px;
  margin: 0 auto;
  padding: 60px 28px 80px;
  position: relative;
  z-index: 2;
}
.page-hero {
  margin-bottom: 40px;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--border);
}
.page-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--terracotta);
  margin-bottom: 16px;
}
.page-kicker::before {
  content: "";
  width: 24px; height: 1px;
  background: var(--terracotta);
}
.page h1 {
  font-family: var(--font-display);
  font-size: 48px;
  line-height: 1.1;
  letter-spacing: -1.2px;
  font-weight: 700;
  margin-bottom: 18px;
  font-style: italic;
}
@media (max-width: 640px) {
  .page h1 { font-size: 34px; }
  .page { padding: 40px 20px 60px; }
}
.page-lead {
  font-size: 19px;
  line-height: 1.6;
  color: var(--text-soft);
  max-width: 600px;
}

.page-section {
  margin-bottom: 40px;
}
.page-section h2 {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: -0.3px;
}
.page-section h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  margin: 24px 0 8px;
}
.page-section p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-soft);
  margin-bottom: 14px;
}
.page-section ul { padding-left: 22px; color: var(--text-soft); margin-bottom: 16px; }
.page-section ul li { line-height: 1.7; margin-bottom: 8px; }

/* Contact form */
.contact-form {
  display: grid;
  gap: 16px;
  margin-top: 20px;
}
.contact-form label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 14px 16px;
  font: inherit;
  font-size: 15px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color 0.15s ease;
  color: var(--text);
}
.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--terracotta);
}
.contact-form textarea { min-height: 140px; resize: vertical; }
.contact-form button[type="submit"] {
  background: var(--text);
  color: white;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.5px;
  justify-self: start;
  transition: background 0.2s ease;
}
.contact-form button[type="submit"]:hover { background: var(--terracotta); }

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-top: 20px;
}
.contact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
}
.contact-card .label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-weight: 700;
  margin-bottom: 6px;
}
.contact-card .value {
  font-weight: 600;
  font-size: 15px;
  color: var(--text);
}

/* ============================================
   Footer
============================================ */
.footer {
  background: var(--text);
  color: rgba(255,255,255,0.65);
  padding: 70px 0 36px;
  margin-top: 80px;
  position: relative;
  z-index: 2;
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 28px;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}
@media (max-width: 768px) {
  .footer-top { grid-template-columns: 1fr; gap: 30px; }
}
.footer-brand .logo { color: white; margin-bottom: 14px; }
.footer-desc {
  font-size: 14px;
  line-height: 1.6;
  max-width: 360px;
}
.footer h4 {
  color: white;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
  margin-bottom: 14px;
}
.footer-links-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links-col a {
  font-size: 14px;
  transition: color 0.2s ease;
}
.footer-links-col a:hover { color: var(--sand); }
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

/* ============================================
   Related cards (bottom of article)
============================================ */
.related {
  max-width: var(--max-w);
  margin: 60px auto 0;
  padding: 0 28px;
  position: relative;
  z-index: 2;
}