/* =========================================================
   All About the World - Global Stylesheet
   ========================================================= */

:root {
  --color-primary: #1e3a8a;
  --color-primary-light: #3b5bdb;
  --color-accent: #f97316;
  --color-stock: #1e40af;
  --color-travel: #0f766e;
  --color-news: #b91c1c;
  --color-text: #1f2933;
  --color-muted: #6b7280;
  --color-bg: #f7f8fa;
  --color-card-bg: #ffffff;
  --color-border: #e5e7eb;
  --radius: 12px;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
  --max-width: 1200px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Pretendard", "Apple SD Gothic Neo", "Segoe UI", Roboto, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Header ---------- */
.site-header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.site-header .header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  max-width: var(--max-width);
  margin: 0 auto;
  flex-wrap: wrap;
  gap: 12px;
}

.site-logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.brand-lockup {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.site-domain {
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  margin-top: 4px;
}

.site-logo span {
  color: var(--color-accent);
}

.site-nav ul {
  list-style: none;
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

.site-nav a {
  display: inline-block;
  padding: 8px 14px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background 0.2s ease;
}

.site-nav a:hover,
.site-nav a.active {
  background: rgba(255, 255, 255, 0.18);
}

/* ---------- Hero ---------- */
.hero {
  background: radial-gradient(circle at top right, rgba(255, 255, 255, 0.15), transparent 60%),
    linear-gradient(135deg, var(--color-primary) 0%, #111827 100%);
  color: #fff;
  padding: 64px 20px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  margin: 0 0 12px;
}

.hero p {
  color: rgba(255, 255, 255, 0.85);
  max-width: 640px;
  margin: 0 auto 24px;
}

.search-bar {
  display: flex;
  justify-content: center;
  gap: 8px;
  max-width: 480px;
  margin: 0 auto;
}

.search-bar input {
  flex: 1;
  padding: 12px 16px;
  border-radius: 999px;
  border: none;
  font-size: 1rem;
}

.search-bar button {
  padding: 12px 20px;
  border-radius: 999px;
  border: none;
  background: var(--color-accent);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
  transition: filter 0.2s ease;
}

.search-bar button:hover {
  filter: brightness(1.08);
}

/* ---------- Section headers ---------- */
.section {
  padding: 56px 0;
}

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 8px;
}

.section-header h2 {
  font-size: 1.6rem;
  margin: 0;
}

.section-header a.view-all {
  font-weight: 600;
  color: var(--color-primary);
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.65rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}

.badge.stock { background: var(--color-stock); }
.badge.travel { background: var(--color-travel); }
.badge.news { background: var(--color-news); }

/* ---------- Card grid ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.card {
  background: var(--color-card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.card img {
  width: 100%;
  height: 100px;
  object-fit: cover;
  background: var(--color-border);
}

.card-body {
  padding: 18px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-body h3 {
  margin: 0 0 10px;
  font-size: 1.6rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--color-primary);
}

.card-body p.summary {
  color: var(--color-muted);
  font-size: 0.92rem;
  flex: 1;
  margin: 0 0 12px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
}

.tag {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-muted);
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--color-muted);
}

.card-link {
  font-weight: 700;
  color: var(--color-primary);
}

/* ---------- Filters ---------- */
.filter-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.filter-bar button {
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: #fff;
  cursor: pointer;
  font-weight: 600;
  color: var(--color-text);
  transition: all 0.2s ease;
}

.filter-bar button.active,
.filter-bar button:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* ---------- Post detail ---------- */
.post-detail {
  background: var(--color-card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
  padding: 32px;
  max-width: 820px;
  margin: 0 auto;
}

.post-detail img.cover {
  width: 100%;
  height: 320px;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: 24px;
}

.post-detail h1 {
  margin: 0 0 8px;
  font-size: 1.9rem;
}

.post-detail .post-meta {
  color: var(--color-muted);
  margin-bottom: 20px;
  font-size: 0.9rem;
}

.post-detail .post-body p {
  margin: 0 0 16px;
}

.post-detail .external-link {
  display: inline-block;
  margin-top: 16px;
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--color-primary);
  color: #fff;
  font-weight: 700;
}

.back-link {
  display: inline-block;
  margin-bottom: 20px;
  font-weight: 600;
  color: var(--color-primary);
}

/* ---------- Contact form ---------- */
.contact-wrap {
  max-width: 640px;
  margin: 0 auto;
  background: var(--color-card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
  padding: 32px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-weight: 700;
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  font-size: 1rem;
  font-family: inherit;
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.btn-submit {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: 8px;
  background: var(--color-accent);
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: filter 0.2s ease;
}

.btn-submit:hover {
  filter: brightness(1.08);
}

.form-note {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-top: 12px;
  text-align: center;
}

.form-honey {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.form-success {
  display: none;
  padding: 16px;
  background: #d1fae5;
  border: 1px solid #6ee7b7;
  border-radius: 8px;
  color: #065f46;
  margin-bottom: 20px;
  text-align: center;
  font-weight: 600;
}

.form-success.show {
  display: block;
}

.form-error {
  display: none;
  padding: 16px;
  background: #fee2e2;
  border: 1px solid #fca5a5;
  border-radius: 8px;
  color: #991b1b;
  margin-bottom: 20px;
  text-align: center;
  font-weight: 600;
}

.form-error.show {
  display: block;
}

/* ---------- Footer ---------- */
.site-footer {
  background: #111827;
  color: rgba(255, 255, 255, 0.75);
  padding: 40px 0;
  margin-top: 40px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-brand h3 {
  color: #fff;
  margin: 0 0 8px;
}

.social-links {
  display: flex;
  gap: 12px;
  margin-top: 10px;
}

.social-links a {
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 0.85rem;
  transition: background 0.2s ease;
}

.social-links a:hover {
  background: rgba(255, 255, 255, 0.12);
}

.social-links .social-placeholder {
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 0.85rem;
  opacity: 0.5;
  cursor: not-allowed;
}

.footer-links ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-links li {
  margin-bottom: 8px;
}

.footer-bottom {
  text-align: center;
  margin-top: 24px;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
}

.empty-state {
  text-align: center;
  color: var(--color-muted);
  padding: 40px 0;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .site-header .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero {
    padding: 48px 16px;
  }

  .section {
    padding: 40px 0;
  }

  .post-detail {
    padding: 20px;
  }

  .footer-inner {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .card-grid {
    grid-template-columns: 1fr;
  }

  .search-bar {
    flex-direction: column;
  }
}