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

:root {
  --color-bg: #f5f7fa;
  --color-white: #ffffff;
  --color-text: #1a1a2e;
  --color-text-sub: #555;
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-border: #e2e8f0;
  --color-klook: #ff5722;
  --color-myrealtrip: #2b96ed;
  --color-agoda: #5542f6;
  --color-tripcom: #287dfa;
  --color-hotelscom: #d32f2f;
  --radius: 12px;
  --shadow: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-hover: 0 6px 20px rgba(0,0,0,0.1);
}

body {
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* === Header === */
.site-header {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.logo {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-primary);
  text-decoration: none;
  white-space: nowrap;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 4px;
}

.nav-link {
  text-decoration: none;
  color: var(--color-text-sub);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 20px;
  transition: background 0.2s, color 0.2s;
}

.nav-link:hover, .nav-link.active {
  background: var(--color-primary);
  color: #fff;
}

.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  font-size: 1.3rem;
  padding: 4px 10px;
  border-radius: 6px;
  cursor: pointer;
}

/* === Hero === */
.hero {
  background: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
  color: #fff;
  text-align: center;
  padding: 56px 20px 48px;
}

.hero h1 { font-size: 2rem; font-weight: 800; margin-bottom: 12px; }

.hero-desc {
  font-size: 1.05rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* === Filter Tabs === */
.filter-section { padding: 24px 0 0; }

.filter-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.filter-tab {
  border: 1px solid var(--color-border);
  background: var(--color-white);
  color: var(--color-text-sub);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: 24px;
  cursor: pointer;
  transition: all 0.2s;
}

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

/* === Coupon Grid === */
.coupons-section { padding: 28px 0 40px; }

.coupon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

/* === Coupon Card === */
.coupon-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: box-shadow 0.2s, transform 0.2s;
  position: relative;
}

.coupon-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.coupon-card.hidden { display: none; }

.card-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  font-size: 0.72rem;
  font-weight: 700;
  background: var(--color-bg);
  color: var(--color-text-sub);
  padding: 3px 10px;
  border-radius: 12px;
}

.card-platform { margin-bottom: 2px; }

.platform-name { font-size: 0.82rem; font-weight: 700; letter-spacing: 0.02em; }

.klook-color { color: var(--color-klook); }
.myrealtrip-color { color: var(--color-myrealtrip); }
.agoda-color { color: var(--color-agoda); }
.tripcom-color { color: var(--color-tripcom); }
.hotelscom-color { color: var(--color-hotelscom); }

.card-title { font-size: 1.1rem; font-weight: 700; line-height: 1.4; }

.card-desc { font-size: 0.88rem; color: var(--color-text-sub); line-height: 1.6; flex: 1; }

.card-detail { display: flex; align-items: center; gap: 10px; margin: 4px 0; }

.discount-tag {
  background: #eef2ff;
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 800;
  padding: 4px 12px;
  border-radius: 6px;
}

.card-condition { font-size: 0.78rem; color: #888; }

/* Coupon Code Button */
.coupon-code-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 10px;
  background: #fff8e1;
  border: 2px dashed #f59e0b;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.coupon-code-btn:hover { background: #fef3c7; border-color: #d97706; }

.coupon-code-btn.copied { background: #dcfce7; border-color: #22c55e; }

.code-text {
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: #92400e;
}

.coupon-code-btn.copied .code-text { color: #166534; }

.code-copy-hint {
  font-size: 0.75rem;
  color: #b45309;
  font-weight: 500;
}

.coupon-code-btn.copied .code-copy-hint { color: #166534; }

.card-cta {
  display: block;
  text-align: center;
  background: var(--color-primary);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.92rem;
  padding: 12px;
  border-radius: 8px;
  margin-top: 4px;
  transition: background 0.2s;
}

.card-cta:hover { background: var(--color-primary-hover); }

/* === Guide Section (Homepage) === */
.guides-section {
  padding: 40px 0 60px;
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
}

.section-title { font-size: 1.5rem; font-weight: 800; text-align: center; margin-bottom: 6px; }
.section-desc { text-align: center; color: var(--color-text-sub); margin-bottom: 28px; font-size: 0.95rem; }

.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.guide-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  text-decoration: none;
  color: var(--color-text);
  transition: box-shadow 0.2s, transform 0.2s;
}

.guide-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }

.guide-platform { font-size: 0.78rem; font-weight: 700; }

.guide-card h3 { font-size: 1rem; font-weight: 700; margin: 8px 0 4px; }

.guide-card p { font-size: 0.82rem; color: var(--color-text-sub); }

/* === Page Content (About, Privacy, Terms, Contact, Guides) === */
.page-hero {
  background: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
  color: #fff;
  text-align: center;
  padding: 44px 20px 36px;
}

.page-hero h1 { font-size: 1.7rem; font-weight: 800; margin-bottom: 8px; }
.page-hero p { opacity: 0.9; font-size: 0.95rem; }

.page-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 20px 60px;
}

.page-content h2 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 32px 0 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

.page-content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 24px 0 8px;
}

.page-content p {
  font-size: 0.92rem;
  color: var(--color-text-sub);
  line-height: 1.8;
  margin-bottom: 14px;
}

.page-content ul, .page-content ol {
  margin: 10px 0 18px 20px;
  font-size: 0.92rem;
  color: var(--color-text-sub);
  line-height: 1.8;
}

.page-content li { margin-bottom: 6px; }

.page-content .tip-box {
  background: #eef2ff;
  border-left: 4px solid var(--color-primary);
  padding: 16px 20px;
  border-radius: 0 8px 8px 0;
  margin: 20px 0;
  font-size: 0.9rem;
  line-height: 1.7;
}

.page-content .cta-inline {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 10px 24px;
  border-radius: 8px;
  margin: 12px 0;
  transition: background 0.2s;
}

.page-content .cta-inline:hover { background: var(--color-primary-hover); }

.page-content .guide-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0;
}

.page-content .guide-nav a {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 8px 16px;
  border-radius: 20px;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-sub);
  transition: all 0.2s;
}

.page-content .guide-nav a:hover,
.page-content .guide-nav a.current {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* Contact form */
.contact-form { margin-top: 20px; }

.contact-form label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 0.9rem;
  font-family: inherit;
  margin-bottom: 16px;
  transition: border-color 0.2s;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

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

.contact-form button {
  background: var(--color-primary);
  color: #fff;
  border: none;
  padding: 12px 32px;
  font-size: 0.92rem;
  font-weight: 700;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s;
}

.contact-form button:hover { background: var(--color-primary-hover); }

/* === FAQ Section === */
.faq-section {
  padding: 48px 0 56px;
  background: var(--color-bg);
}

.faq-list {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow 0.2s;
}

.faq-item[open] {
  box-shadow: var(--shadow);
}

.faq-question {
  padding: 18px 24px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--color-text);
  line-height: 1.5;
}

.faq-question::-webkit-details-marker { display: none; }

.faq-question::after {
  content: '+';
  font-size: 1.3rem;
  font-weight: 300;
  color: var(--color-primary);
  flex-shrink: 0;
  transition: transform 0.2s;
}

.faq-item[open] .faq-question::after {
  content: '−';
}

.faq-answer {
  padding: 0 24px 20px;
}

.faq-answer p {
  font-size: 0.9rem;
  color: var(--color-text-sub);
  line-height: 1.8;
}

.faq-answer a {
  color: var(--color-primary);
}

/* === Blog Images === */
.page-content figure {
  margin: 24px 0;
  border-radius: var(--radius);
  overflow: hidden;
}

.page-content figure picture,
.page-content figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
}

.page-content figcaption {
  font-size: 0.78rem;
  color: #999;
  text-align: center;
  padding: 8px 0 0;
}

/* === Blog List === */
.blog-list { display: flex; flex-direction: column; gap: 24px; }

.blog-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  transition: box-shadow 0.2s, transform 0.2s;
}

.blog-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }

.blog-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.blog-card h2 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; line-height: 1.5; }

.blog-card h2 a { color: var(--color-text); text-decoration: none; }

.blog-card h2 a:hover { color: var(--color-primary); }

.blog-excerpt { font-size: 0.88rem; color: var(--color-text-sub); line-height: 1.7; margin-bottom: 8px; }

.blog-meta { font-size: 0.78rem; color: #999; }

/* === Footer === */
.site-footer {
  background: var(--color-text);
  color: #ccc;
  text-align: center;
  padding: 36px 20px;
  font-size: 0.82rem;
  line-height: 1.8;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.footer-links a {
  color: #ddd;
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.2s;
}

.footer-links a:hover { color: #fff; }

.footer-about { color: #eee; margin-bottom: 8px; }
.footer-disclaimer { color: #999; margin-bottom: 12px; }
.footer-copy { color: #666; font-size: 0.75rem; }

/* === Responsive === */
@media (max-width: 640px) {
  .hero h1 { font-size: 1.5rem; }
  .hero-desc { font-size: 0.92rem; }
  .page-hero h1 { font-size: 1.4rem; }
  .coupon-grid { grid-template-columns: 1fr; }
  .guide-grid { grid-template-columns: 1fr 1fr; }
  .header-inner { height: 52px; }
  .logo { font-size: 1.1rem; }

  .menu-toggle { display: block; }

  .nav-list {
    display: none;
    position: absolute;
    top: 52px;
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 12px 20px;
    gap: 4px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  }

  .nav-list.open { display: flex; }
  .nav-link { padding: 10px 14px; }
  .filter-tab { font-size: 0.8rem; padding: 6px 14px; }
}

@media (max-width: 420px) {
  .guide-grid { grid-template-columns: 1fr; }
}