/* ============================================================
   VIRTUAL MUSEUM — Русь в XIII–XV вв.
   styles.css — единый стиль для всех страниц
   ============================================================ */

/* ---------- CSS CUSTOM PROPERTIES ---------- */
:root {
  --clr-bg:        #0d0a06;
  --clr-surface:   #1a1410;
  --clr-surface2:  #231c14;
  --clr-border:    #3d2e1a;
  --clr-gold:      #c9922a;
  --clr-gold-light:#e8b84b;
  --clr-gold-pale: #f5dfa0;
  --clr-text:      #e8dcc8;
  --clr-text-muted:#9e8c72;
  --clr-accent:    #8b3a1e;
  --clr-accent2:   #4a6741;

  --font-serif:    'Playfair Display', 'Georgia', serif;
  --font-sans:     'Inter', 'Segoe UI', sans-serif;

  --radius-sm: 4px;
  --radius-md: 10px;
  --radius-lg: 18px;

  --shadow-glow: 0 0 40px rgba(201,146,42,0.15);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.6);
  --shadow-card-hover: 0 12px 48px rgba(0,0,0,0.8), 0 0 20px rgba(201,146,42,0.2);

  --transition-fast:   0.18s ease;
  --transition-normal: 0.35s cubic-bezier(0.4,0,0.2,1);
  --transition-slow:   0.6s cubic-bezier(0.4,0,0.2,1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--clr-bg);
  color: var(--clr-text);
  font-family: var(--font-sans);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Custom scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--clr-surface); }
::-webkit-scrollbar-thumb { background: var(--clr-border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--clr-gold); }

/* ---------- TYPOGRAPHY ---------- */
h1, h2, h3, h4, h5 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.25;
  color: var(--clr-gold-pale);
  letter-spacing: 0.02em;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.8rem); }
h4 { font-size: 1.15rem; }

p { margin-bottom: 1.1em; color: var(--clr-text); }

a {
  color: var(--clr-gold-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--clr-gold-pale); text-decoration: underline; }

strong { color: var(--clr-gold-pale); }
em { color: var(--clr-gold-light); font-style: italic; }

/* ---------- ORNAMENT DIVIDER ---------- */
.ornament-divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 2.5rem 0;
  color: var(--clr-gold);
  opacity: 0.6;
}
.ornament-divider::before,
.ornament-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--clr-gold), transparent);
}
.ornament-divider span {
  font-size: 1.4rem;
  white-space: nowrap;
}

/* ---------- SITE HEADER ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(13,10,6,0.92);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--clr-border);
  padding: 0 2rem;
  transition: background var(--transition-normal);
}

.header-inner {
  max-width: 1300px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}
.logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--clr-gold), var(--clr-accent));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: #fff;
  flex-shrink: 0;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.logo:hover .logo-icon {
  transform: rotate(-6deg) scale(1.1);
  box-shadow: 0 0 16px rgba(201,146,42,0.5);
}
.logo-text {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--clr-gold-pale);
  line-height: 1.2;
}
.logo-text small {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.68rem;
  font-weight: 400;
  color: var(--clr-text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* NAV */
.main-nav { display: flex; align-items: center; gap: 0.25rem; }
.main-nav a {
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  color: var(--clr-text-muted);
  font-weight: 500;
  transition: background var(--transition-fast), color var(--transition-fast);
  text-decoration: none;
  letter-spacing: 0.03em;
}
.main-nav a:hover,
.main-nav a.active {
  background: rgba(201,146,42,0.12);
  color: var(--clr-gold-light);
}

.nav-btn {
  margin-left: 0.75rem;
  padding: 0.45rem 1rem !important;
  background: linear-gradient(135deg, var(--clr-gold), #a0701a) !important;
  color: #fff !important;
  border-radius: var(--radius-sm) !important;
  font-weight: 600 !important;
  font-size: 0.82rem !important;
  letter-spacing: 0.05em !important;
  text-transform: uppercase !important;
}
.nav-btn:hover {
  background: linear-gradient(135deg, var(--clr-gold-light), var(--clr-gold)) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(201,146,42,0.35) !important;
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--clr-gold-light);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- HERO (index) ---------- */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  text-align: center;
  padding: 5rem 2rem 4rem;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(139,58,30,0.25) 0%, transparent 70%),
    radial-gradient(ellipse 60% 40% at 30% 80%, rgba(74,103,65,0.15) 0%, transparent 70%),
    linear-gradient(180deg, #0d0a06 0%, #150f08 50%, #0d0a06 100%);
}

/* Decorative orbs */
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.18;
  pointer-events: none;
  animation: float 12s ease-in-out infinite;
}
.hero-orb-1 {
  width: 600px; height: 600px;
  background: var(--clr-gold);
  top: -150px; left: -150px;
  animation-delay: 0s;
}
.hero-orb-2 {
  width: 400px; height: 400px;
  background: var(--clr-accent);
  bottom: -50px; right: -100px;
  animation-delay: -4s;
}
.hero-orb-3 {
  width: 300px; height: 300px;
  background: var(--clr-accent2);
  bottom: 100px; left: 20%;
  animation-delay: -8s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(30px, -20px) scale(1.05); }
  66%       { transform: translate(-20px, 15px) scale(0.97); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 860px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(201,146,42,0.12);
  border: 1px solid rgba(201,146,42,0.3);
  color: var(--clr-gold-light);
  font-size: 0.78rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 0.4rem 1rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
}

.hero h1 {
  margin-bottom: 1.25rem;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--clr-text-muted);
  max-width: 620px;
  margin: 0 auto 2.5rem;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  border: none;
  transition: all var(--transition-normal);
  text-decoration: none;
  line-height: 1;
}
.btn-primary {
  background: linear-gradient(135deg, var(--clr-gold), #a0701a);
  color: #fff;
  box-shadow: 0 4px 20px rgba(201,146,42,0.3);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(201,146,42,0.45);
  color: #fff;
  text-decoration: none;
}
.btn-secondary {
  background: transparent;
  color: var(--clr-gold-light);
  border: 1.5px solid rgba(201,146,42,0.4);
}
.btn-secondary:hover {
  background: rgba(201,146,42,0.1);
  border-color: var(--clr-gold);
  transform: translateY(-2px);
  color: var(--clr-gold-pale);
  text-decoration: none;
}

/* ---------- HERO STATS ---------- */
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin-top: 4rem;
  flex-wrap: wrap;
}
.stat {
  text-align: center;
}
.stat-value {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  color: var(--clr-gold);
  font-weight: 700;
  line-height: 1;
}
.stat-label {
  font-size: 0.78rem;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 0.3rem;
}

/* ---------- SECTIONS ---------- */
.section {
  padding: 6rem 2rem;
  max-width: 1300px;
  margin: 0 auto;
}
.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}
.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-gold);
  margin-bottom: 0.75rem;
}
.section-header h2 { margin-bottom: 0.75rem; }
.section-header p {
  max-width: 600px;
  margin: 0 auto;
  color: var(--clr-text-muted);
  font-size: 1.05rem;
}

/* ---------- ABOUT MUSEUM ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.about-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.about-emblem {
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 35%, rgba(201,146,42,0.2), transparent 70%),
              var(--clr-surface2);
  border: 2px solid var(--clr-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  position: relative;
  overflow: hidden;
  animation: pulse-ring 4s ease-in-out infinite;
}
@keyframes pulse-ring {
  0%, 100% { box-shadow: 0 0 0 0 rgba(201,146,42,0.2), 0 0 0 20px rgba(201,146,42,0.05); }
  50%       { box-shadow: 0 0 0 10px rgba(201,146,42,0.1), 0 0 0 30px rgba(201,146,42,0.02); }
}

.about-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(201,146,42,0.15);
}
.about-ring-1 { width: 320px; height: 320px; }
.about-ring-2 { width: 360px; height: 360px; animation-delay: 0.5s; }
.about-ring-3 { width: 400px; height: 400px; animation-delay: 1s; }

.about-pillars {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}
.pillar {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}
.pillar:hover {
  border-color: var(--clr-gold);
  transform: translateY(-2px);
}
.pillar-icon { font-size: 1.6rem; margin-bottom: 0.5rem; }
.pillar h4 { font-size: 0.9rem; color: var(--clr-gold-light); margin-bottom: 0.25rem; }
.pillar p { font-size: 0.82rem; color: var(--clr-text-muted); margin: 0; }

/* ---------- EXCURSIONS GRID ---------- */
.excursions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.75rem;
}

.excursion-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
  position: relative;
  cursor: pointer;
  text-decoration: none;
  display: flex;
  flex-direction: column;
}
.excursion-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(201,146,42,0.5);
  text-decoration: none;
}

.card-image {
  height: 220px;
  position: relative;
  overflow: hidden;
}
.card-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--clr-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: transform var(--transition-slow);
}
.excursion-card:hover .card-placeholder { transform: scale(1.04); }

.card-placeholder-1 {
  background: linear-gradient(135deg, #1a100a 0%, #2d1a0d 50%, #1a100a 100%);
}
.card-placeholder-2 {
  background: linear-gradient(135deg, #0a1018 0%, #0d2030 50%, #0a1018 100%);
}
.card-placeholder-3 {
  background: linear-gradient(135deg, #0e1410 0%, #1a2d1a 50%, #0e1410 100%);
}

.card-placeholder-icon {
  font-size: 3.5rem;
  filter: grayscale(30%) opacity(0.7);
}
.card-tag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: rgba(201,146,42,0.85);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.3rem 0.65rem;
  border-radius: 100px;
  backdrop-filter: blur(8px);
}
.card-duration {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(13,10,6,0.75);
  color: var(--clr-text-muted);
  font-size: 0.72rem;
  padding: 0.3rem 0.65rem;
  border-radius: 100px;
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.card-body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.card-body h3 {
  font-size: 1.15rem;
  color: var(--clr-gold-pale);
  margin-bottom: 0.6rem;
  line-height: 1.3;
}
.card-body p {
  font-size: 0.88rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 1.25rem;
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--clr-border);
}
.card-subtopics {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
}
.subtopic-badge {
  background: rgba(201,146,42,0.1);
  border: 1px solid rgba(201,146,42,0.2);
  color: var(--clr-gold);
  font-size: 0.68rem;
  padding: 0.2rem 0.5rem;
  border-radius: 100px;
}
.card-arrow {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(201,146,42,0.1);
  border: 1px solid rgba(201,146,42,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-gold);
  font-size: 0.9rem;
  flex-shrink: 0;
  transition: background var(--transition-fast), transform var(--transition-fast);
}
.excursion-card:hover .card-arrow {
  background: var(--clr-gold);
  color: #fff;
  transform: translateX(3px);
}

/* ---------- TIMELINE SECTION ---------- */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--clr-gold), transparent);
}
.timeline-item {
  display: flex;
  gap: 2rem;
  margin-bottom: 2.5rem;
  position: relative;
}
.timeline-item:nth-child(odd) { flex-direction: row; }
.timeline-item:nth-child(even) { flex-direction: row-reverse; }

.timeline-content {
  flex: 1;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}
.timeline-content:hover {
  border-color: rgba(201,146,42,0.4);
  transform: translateY(-2px);
}
.timeline-date {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--clr-gold);
  font-weight: 700;
  margin-bottom: 0.4rem;
}
.timeline-content h4 { font-size: 1rem; margin-bottom: 0.4rem; }
.timeline-content p { font-size: 0.85rem; color: var(--clr-text-muted); margin: 0; }

.timeline-dot {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--clr-gold);
  border: 3px solid var(--clr-bg);
  top: 1.5rem;
  z-index: 1;
  box-shadow: 0 0 0 3px rgba(201,146,42,0.2);
}

/* ---------- EXCURSION PAGE LAYOUT ---------- */
.excursion-hero {
  position: relative;
  min-height: 55vh;
  display: flex;
  align-items: flex-end;
  padding: 3rem 2rem;
  overflow: hidden;
}
.excursion-hero-bg {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18rem;
  opacity: 0.04;
  pointer-events: none;
  user-select: none;
  overflow: hidden;
}
.excursion-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, var(--clr-bg) 0%, rgba(13,10,6,0.5) 60%, transparent 100%);
}
.excursion-hero-content {
  position: relative;
  z-index: 2;
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
}
.excursion-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--clr-text-muted);
  margin-bottom: 1.25rem;
}
.excursion-breadcrumb a { color: var(--clr-gold); }
.excursion-breadcrumb span { opacity: 0.5; }
.excursion-hero h1 { margin-bottom: 0.75rem; }
.excursion-meta {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--clr-text-muted);
}
.excursion-meta span { display: flex; align-items: center; gap: 0.35rem; }

/* ---------- EXCURSION BODY ---------- */
.excursion-body {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem 5rem;
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 3rem;
  align-items: start;
}

/* Sidebar navigation */
.excursion-sidebar {
  position: sticky;
  top: 88px;
}
.sidebar-nav {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.sidebar-nav-title {
  padding: 1rem 1.25rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-text-muted);
  border-bottom: 1px solid var(--clr-border);
}
.sidebar-nav-list {
  list-style: none;
}
.sidebar-nav-list li a {
  display: block;
  padding: 0.75rem 1.25rem;
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  border-left: 2px solid transparent;
  transition: all var(--transition-fast);
  text-decoration: none;
}
.sidebar-nav-list li a:hover,
.sidebar-nav-list li a.active {
  color: var(--clr-gold-light);
  background: rgba(201,146,42,0.07);
  border-left-color: var(--clr-gold);
}

/* ---------- ARTICLE CONTENT ---------- */
.article-content {
  min-width: 0;
}

.article-intro {
  background: var(--clr-surface2);
  border-left: 3px solid var(--clr-gold);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 1.75rem 1.75rem 1.75rem 2rem;
  margin-bottom: 3rem;
}
.article-intro p { color: var(--clr-text); font-size: 1.05rem; margin: 0; }

/* Subtopic sections */
.subtopic {
  margin-bottom: 4rem;
  scroll-margin-top: 100px;
}
.subtopic-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.75rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--clr-border);
}
.subtopic-num {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--clr-gold), #a0701a);
  color: #fff;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.subtopic-header h2 { margin: 0; font-size: 1.5rem; }

.article-content p { font-size: 0.97rem; line-height: 1.8; }

/* ---------- IMAGE PLACEHOLDERS ---------- */
.image-placeholder {
  background: var(--clr-surface2);
  border: 1px dashed var(--clr-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: 1.75rem 0;
  transition: border-color var(--transition-fast);
}
.image-placeholder:hover { border-color: rgba(201,146,42,0.4); }

.placeholder-inner {
  height: 300px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 2rem;
}
.placeholder-icon { font-size: 2.5rem; opacity: 0.4; }
.placeholder-title {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  text-align: center;
  line-height: 1.4;
}
.placeholder-badge {
  font-size: 0.72rem;
  background: rgba(201,146,42,0.1);
  border: 1px solid rgba(201,146,42,0.2);
  color: var(--clr-gold);
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  letter-spacing: 0.08em;
}

.image-caption {
  padding: 0.75rem 1rem;
  font-size: 0.8rem;
  color: var(--clr-text-muted);
  font-style: italic;
  border-top: 1px solid var(--clr-border);
  background: rgba(0,0,0,0.2);
}

/* Image grid (2 columns) */
.image-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1.75rem 0;
}

/* ---------- TASK BLOCKS ---------- */
.task-block {
  background: linear-gradient(135deg, rgba(74,103,65,0.12), rgba(74,103,65,0.06));
  border: 1px solid rgba(74,103,65,0.3);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin: 2rem 0;
  position: relative;
  overflow: hidden;
}
.task-block::before {
  content: '✦';
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  font-size: 1.2rem;
  color: var(--clr-accent2);
  opacity: 0.4;
}
.task-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.75rem;
}
.task-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-accent2);
  background: rgba(74,103,65,0.2);
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
}
.task-block p { color: var(--clr-text); font-size: 0.9rem; margin: 0; }

/* ---------- INTERACTIVE TABLE ---------- */
.data-table-wrap {
  overflow-x: auto;
  margin: 2rem 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--clr-border);
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
.data-table th {
  background: var(--clr-surface2);
  color: var(--clr-gold-light);
  font-family: var(--font-serif);
  font-weight: 600;
  padding: 0.9rem 1.1rem;
  text-align: left;
  border-bottom: 1px solid var(--clr-border);
  white-space: nowrap;
}
.data-table td {
  padding: 0.8rem 1.1rem;
  border-bottom: 1px solid rgba(61,46,26,0.5);
  color: var(--clr-text-muted);
  vertical-align: top;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: rgba(201,146,42,0.04); color: var(--clr-text); }
.data-table td strong { color: var(--clr-gold-pale); }

/* ---------- CONCLUSION BLOCK ---------- */
.conclusion-block {
  background: linear-gradient(135deg, rgba(139,58,30,0.12), rgba(201,146,42,0.06));
  border: 1px solid rgba(139,58,30,0.3);
  border-radius: var(--radius-md);
  padding: 2rem;
  margin: 3rem 0;
  text-align: center;
}
.conclusion-block h3 {
  color: var(--clr-gold-light);
  margin-bottom: 0.75rem;
}
.conclusion-block p { color: var(--clr-text); max-width: 580px; margin: 0 auto; }

/* ---------- SOURCES / BIBLIOGRAPHY ---------- */
.sources-section {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  margin-top: 4rem;
}
.sources-section h3 {
  font-size: 1.1rem;
  color: var(--clr-gold-light);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.sources-list {
  list-style: none;
  counter-reset: source-counter;
}
.sources-list li {
  counter-increment: source-counter;
  position: relative;
  padding: 0.6rem 0 0.6rem 2.5rem;
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  border-bottom: 1px solid rgba(61,46,26,0.4);
  line-height: 1.55;
}
.sources-list li:last-child { border-bottom: none; }
.sources-list li::before {
  content: counter(source-counter);
  position: absolute;
  left: 0;
  top: 0.6rem;
  width: 1.6rem;
  height: 1.6rem;
  background: rgba(201,146,42,0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--clr-gold);
  text-align: center;
  line-height: 1.6rem;
}

/* ---------- TRANSITION BLOCK ---------- */
.transition-block {
  text-align: center;
  padding: 1.5rem;
  margin: 1.5rem 0;
  font-style: italic;
  color: var(--clr-text-muted);
  font-size: 0.95rem;
  position: relative;
}
.transition-block::before,
.transition-block::after {
  content: '— ';
  color: var(--clr-gold);
  opacity: 0.5;
}
.transition-block::after { content: ' —'; }

/* ---------- FOOTER ---------- */
.site-footer {
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
  padding: 3rem 2rem;
  margin-top: 4rem;
}
.footer-inner {
  max-width: 1300px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
}
.footer-brand p {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  margin-top: 0.75rem;
  max-width: 320px;
}
.footer-col h5 {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-text-muted);
  margin-bottom: 1rem;
}
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 0.5rem; }
.footer-links a {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  transition: color var(--transition-fast);
}
.footer-links a:hover { color: var(--clr-gold-light); text-decoration: none; }

.footer-bottom {
  max-width: 1300px;
  margin: 2rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--clr-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--clr-text-muted);
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ---------- PROGRESS BAR ---------- */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--clr-gold), var(--clr-gold-light));
  z-index: 2000;
  transition: width 0.1s linear;
  width: 0%;
}

/* ---------- SCROLL REVEAL ANIMATION ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s cubic-bezier(0.4,0,0.2,1),
              transform 0.65s cubic-bezier(0.4,0,0.2,1);
}
.reveal.visible {
  opacity: 1;
  transform: none;
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ---------- BACK TO TOP ---------- */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(201,146,42,0.85);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-normal);
  z-index: 999;
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}
.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
}
.back-to-top:hover {
  background: var(--clr-gold-light);
  transform: translateY(-3px);
}

/* ---------- HIGHLIGHT TEXT ---------- */
.highlight {
  background: linear-gradient(135deg, rgba(201,146,42,0.15), rgba(201,146,42,0.05));
  border-left: 3px solid var(--clr-gold);
  padding: 0.15em 0.5em;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--clr-gold-pale);
  font-style: normal;
}

/* ---------- MOBILE ---------- */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-visual { display: none; }
  .footer-inner { grid-template-columns: 1fr 1fr; }

  .excursion-body {
    grid-template-columns: 1fr;
  }
  .excursion-sidebar { position: static; }
  .sidebar-nav { display: none; }
}

@media (max-width: 768px) {
  .main-nav { display: none; position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; background: rgba(13,10,6,0.97);
    border-bottom: 1px solid var(--clr-border); padding: 1rem;
    gap: 0.25rem; z-index: 999;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 0.75rem 1rem; border-radius: var(--radius-sm); width: 100%; }
  .nav-btn { margin-left: 0; margin-top: 0.5rem; text-align: center; }
  .nav-toggle { display: flex; }

  .hero { min-height: 80vh; }
  .hero-stats { gap: 1.5rem; }

  .excursion-hero { min-height: 40vh; }
  .excursion-meta { gap: 0.75rem; }

  .image-grid-2 { grid-template-columns: 1fr; }

  .timeline::before { left: 20px; }
  .timeline-item,
  .timeline-item:nth-child(even) {
    flex-direction: column !important;
    padding-left: 50px;
  }
  .timeline-dot { left: 20px; }

  .footer-inner { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; text-align: center; }

  .hero-stats .stat-value { font-size: 1.8rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}