/* ==========================================================================
   FLYBATT.COM - Airline Regulations & Content Directory Stylesheet
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Noto+Sans+KR:wght@300;400;500;700;900&display=swap');

:root {
  --color-bg-base: #0B0E14;
  --color-bg-surface: #121824;
  --color-bg-card: #182030;
  --color-bg-elevated: #222C42;

  --color-brand-primary: #009245; /* Aero Emerald */
  --color-brand-hover: #00A850;
  --color-amber: #D97706;
  --color-red: #B91C1C;
  --color-blue: #2563EB;

  --text-title: #FFFFFF;
  --text-body: #E2E8F0;
  --text-muted: #94A3B8;
  --text-dim: #64748B;

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-active: rgba(0, 146, 69, 0.4);

  --font-content: 'Noto Sans KR', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

/* Global Reset for Blog Pages */
body.airline-page {
  background-color: var(--color-bg-base);
  color: var(--text-body);
  font-family: var(--font-content);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Main Container Layouts */
.airline-container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

.article-container {
  width: 100%;
  max-width: 820px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Breadcrumbs */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-dim);
  padding: 16px 0;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 24px;
}

.breadcrumbs a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

.breadcrumbs a:hover {
  color: var(--color-brand-primary);
}

.breadcrumbs .separator {
  opacity: 0.4;
}

.breadcrumbs .current {
  color: var(--text-title);
  font-weight: 500;
}

/* Sticky Top Scanner Floating Bar */
.sticky-scanner-bar {
  background: linear-gradient(90deg, #0d2818 0%, #133a23 50%, #0d2818 100%);
  border: 1px solid rgba(0, 146, 69, 0.35);
  border-radius: 12px;
  padding: 14px 20px;
  margin-bottom: 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.scanner-bar-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.scanner-bar-icon {
  width: 38px;
  height: 38px;
  background: rgba(0, 146, 69, 0.25);
  border: 1px solid var(--color-brand-primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.scanner-bar-text h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 2px;
}

.scanner-bar-text p {
  font-size: 0.8rem;
  color: #A7F3D0;
  margin: 0;
}

.btn-bar-cta {
  background: var(--color-brand-primary);
  color: #FFFFFF;
  font-size: 0.88rem;
  font-weight: 700;
  padding: 10px 18px;
  border-radius: 8px;
  text-decoration: none;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
  box-shadow: 0 4px 12px rgba(0, 146, 69, 0.35);
}

.btn-bar-cta:hover {
  background: var(--color-brand-hover);
  transform: translateY(-1px);
}

/* Page Header */
.page-hero {
  text-align: center;
  padding: 30px 0 40px;
}

.page-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 146, 69, 0.12);
  border: 1px solid rgba(0, 146, 69, 0.3);
  color: #34D399;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 9999px;
  margin-bottom: 16px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.page-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--text-title);
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 14px;
}

.page-hero p {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto;
}

/* Search & Filter Toolbar */
.directory-toolbar {
  background: var(--color-bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 16px;
  margin-bottom: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.search-box-wrapper {
  position: relative;
  width: 100%;
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
  pointer-events: none;
}

.search-input {
  width: 100%;
  height: 48px;
  background: var(--color-bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 0 16px 0 44px;
  color: var(--text-title);
  font-size: 0.95rem;
  font-family: inherit;
  transition: all 0.2s ease;
}

.search-input:focus {
  outline: none;
  border-color: var(--color-brand-primary);
  box-shadow: 0 0 0 3px rgba(0, 146, 69, 0.2);
}

.filter-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}

.filter-tabs::-webkit-scrollbar {
  display: none;
}

.filter-btn {
  background: var(--color-bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}

.filter-btn:hover {
  background: var(--color-bg-elevated);
  color: var(--text-title);
}

.filter-btn.active {
  background: var(--color-brand-primary);
  border-color: var(--color-brand-primary);
  color: #FFFFFF;
}

/* Airline Grid Cards */
.airline-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
  margin-bottom: 48px;
}

.airline-card {
  background: var(--color-bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}

.airline-card:hover {
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.4);
}

.airline-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 14px;
}

.airline-ident {
  display: flex;
  align-items: center;
  gap: 12px;
}

.airline-code-badge {
  width: 44px;
  height: 44px;
  background: var(--color-bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 800;
  color: #FFFFFF;
}

.airline-names h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 2px;
}

.airline-names p {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.region-tag {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-muted);
}

/* Quick specs inside card */
.card-rule-summary {
  background: var(--color-bg-card);
  border-radius: 10px;
  padding: 12px 14px;
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.rule-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}

.rule-row-label {
  color: var(--text-muted);
}

.rule-row-val {
  font-weight: 700;
}

.val-pass { color: #34D399; }
.val-caution { color: #FBBF24; }
.val-reject { color: #F87171; }

.card-callout-warning {
  background: rgba(185, 28, 28, 0.12);
  border: 1px solid rgba(185, 28, 28, 0.3);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 0.78rem;
  color: #FCA5A5;
  margin-bottom: 16px;
  line-height: 1.4;
}

.btn-card-detail {
  width: 100%;
  background: var(--color-bg-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-title);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 10px 14px;
  border-radius: 8px;
  text-decoration: none;
  text-align: center;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all 0.2s ease;
}

.btn-card-detail:hover {
  background: var(--color-brand-primary);
  border-color: var(--color-brand-primary);
  color: #FFFFFF;
}

/* Google AdSense Responsive Unit Slots */
.adsense-slot-container {
  width: 100%;
  margin: 32px 0;
  background: rgba(255, 255, 255, 0.02);
  border: 1px dashed rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  padding: 16px;
  text-align: center;
  position: relative;
  overflow: hidden;
  min-height: 120px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.adsense-slot-label {
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 8px;
}

/* Blog Article Content Styling */
.article-header {
  margin-bottom: 32px;
}

.article-header h1 {
  font-size: clamp(1.8rem, 3.8vw, 2.4rem);
  font-weight: 800;
  color: var(--text-title);
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 14px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--text-dim);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* Article Body Typography */
.article-body {
  font-size: 1.05rem;
  color: var(--text-body);
  line-height: 1.8;
}

.article-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-title);
  margin: 44px 0 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
}

.article-body h2::before {
  content: '';
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 48px;
  height: 2px;
  background: var(--color-brand-primary);
}

.article-body h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-title);
  margin: 28px 0 12px;
}

.article-body p {
  margin-bottom: 20px;
}

.article-body ul, .article-body ol {
  margin: 0 0 24px 24px;
}

.article-body li {
  margin-bottom: 8px;
}

.article-body strong {
  color: #FFFFFF;
  font-weight: 700;
}

/* Callout Boxes */
.callout-box {
  border-radius: 12px;
  padding: 18px 20px;
  margin: 28px 0;
  border-left: 4px solid;
}

.callout-danger {
  background: rgba(185, 28, 28, 0.1);
  border-color: var(--color-red);
  color: #FECACA;
}

.callout-danger strong {
  color: #F87171;
}

.callout-warning {
  background: rgba(217, 119, 6, 0.1);
  border-color: var(--color-amber);
  color: #FDE68A;
}

.callout-warning strong {
  color: #FBBF24;
}

.callout-info {
  background: rgba(0, 146, 69, 0.1);
  border-color: var(--color-brand-primary);
  color: #A7F3D0;
}

.callout-info strong {
  color: #34D399;
}

/* Data Tables */
.table-wrapper {
  width: 100%;
  overflow-x: auto;
  margin: 28px 0;
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
}

.regulation-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  text-align: left;
}

.regulation-table th {
  background: var(--color-bg-card);
  color: var(--text-title);
  font-weight: 700;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-subtle);
  white-space: nowrap;
}

.regulation-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-body);
}

.regulation-table tr:last-child td {
  border-bottom: none;
}

.regulation-table tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.02);
}

/* Interactive Calculator Widget on Article Pages */
.inline-calculator-card {
  background: var(--color-bg-surface);
  border: 1px solid var(--border-active);
  border-radius: 14px;
  padding: 24px;
  margin: 32px 0;
}

.inline-calculator-card h3 {
  margin-top: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.calc-inputs-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 18px 0;
}

.calc-field label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.calc-field input {
  width: 100%;
  height: 44px;
  background: var(--color-bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 0 12px;
  color: var(--text-title);
  font-size: 1rem;
  font-family: inherit;
}

.calc-result-display {
  background: var(--color-bg-elevated);
  border-radius: 10px;
  padding: 16px;
  text-align: center;
}

.calc-result-num {
  font-size: 1.8rem;
  font-weight: 800;
  color: #34D399;
}

/* FAQ Accordion */
.faq-section {
  margin: 44px 0;
}

.faq-item {
  background: var(--color-bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 18px 20px;
  text-align: left;
  background: none;
  border: none;
  color: var(--text-title);
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color 0.15s ease;
}

.faq-question:hover {
  background: var(--color-bg-elevated);
}

.faq-answer {
  padding: 0 20px 20px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* Responsive Rules */
@media (max-width: 768px) {
  .sticky-scanner-bar {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }

  .scanner-bar-info {
    flex-direction: column;
  }

  .btn-bar-cta {
    justify-content: center;
  }

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

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