/* ============================================
   CORPUS ANATOMIA — style.css
   Colors from your Figma palette:
   - Crimson red:  #8B1A1A
   - Dark brown:   #1C1008
   - Medium brown: #3D2B1F
   - Warm brown:   #7A5C3A
   - Sandy tan:    #C4A882
   - Gold:         #C8A84B
   - Parchment bg: #E8D9B8
   ============================================ */

/* ---- CSS Variables (easy to change colors in one place) ---- */
:root {
  --parchment:    #E8D9B8;
  --parchment-dk: #D4C49A;
  --brown-dark:   #1C1008;
  --brown-mid:    #3D2B1F;
  --brown-warm:   #7A5C3A;
  --tan:          #C4A882;
  --gold:         #C8A84B;
  --crimson:      #8B1A1A;
  --font-heading: 'Cinzel', serif;
  --font-body:    'IM Fell English', serif;
}

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

html {
  /* Smooth scrolling for the whole page */
  scroll-behavior: smooth;
}

body {
  background-color: var(--parchment);
  color: var(--brown-dark);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
}


/* ============================================
   NAVBAR
   ============================================ */
#navbar {
  position: fixed;           /* Stays at top as you scroll */
  top: 0;
  width: 100%;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 40px;
  background-color: var(--brown-dark);
  border-bottom: 1px solid var(--gold);
  transition: background 0.3s;
}

.nav-logo {
  font-family: var(--font-heading);
  color: var(--gold);
  font-size: 1.1rem;
  letter-spacing: 2px;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 32px;
}

.nav-links a {
  font-family: var(--font-heading);
  color: var(--tan);
  text-decoration: none;
  font-size: 0.75rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--gold);
}

/* Hamburger — only visible on mobile */
.hamburger {
  display: none;
  background: none;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-size: 1.2rem;
  padding: 4px 10px;
  cursor: pointer;
}

/* Mobile menu — hidden by default */
.mobile-menu {
  display: none;
  flex-direction: column;
  position: fixed;
  top: 55px;
  left: 0;
  width: 100%;
  background-color: var(--brown-dark);
  z-index: 99;
  padding: 20px;
  border-bottom: 1px solid var(--gold);
}

.mobile-menu a {
  font-family: var(--font-heading);
  color: var(--tan);
  text-decoration: none;
  padding: 10px 0;
  border-bottom: 1px solid var(--brown-mid);
  letter-spacing: 2px;
  text-transform: uppercase;
  font-size: 0.8rem;
}

.mobile-menu.open {
  display: flex;
}


/* ============================================
   SECTION 1: HERO
   ============================================ */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background-color: var(--parchment);
  padding-top: 70px;       /* offset for fixed navbar */
  overflow: hidden;
}

/* The radial gradient in the background */
.radial-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, var(--parchment-dk) 0%, var(--parchment) 65%);
  z-index: 0;
  pointer-events: none;
}

/* Decorative corner lines — all 4 corners */
#hero::before,
#hero::after {
  content: '';
  position: absolute;
  width: 120px;
  height: 120px;
  border: 1px solid var(--brown-warm);
  opacity: 0.6;
  z-index: 2;
}
/* Top-left corner */
#hero::before { top: 80px; left: 40px; border-right: none; border-bottom: none; }
/* Bottom-right corner */
#hero::after  { bottom: 40px; right: 40px; border-left: none; border-top: none; z-index: 2; }

/* Top-right and bottom-left via the .radial-bg pseudo elements */
.radial-bg::before,
.radial-bg::after {
  content: '';
  position: absolute;
  width: 120px;
  height: 120px;
  border: 1px solid var(--brown-warm);
  opacity: 0.6;
  z-index: 2;
}
/* Top-right corner */
.radial-bg::before { top: 80px; right: 40px; border-left: none; border-bottom: none; }
/* Bottom-left corner */
.radial-bg::after  { bottom: 40px; left: 40px; border-right: none; border-top: none; }

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-subtitle {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  letter-spacing: 6px;
  color: var(--brown-warm);
  margin-bottom: 12px;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(3rem, 8vw, 6rem);
  color: var(--brown-dark);
  line-height: 1.1;
  margin-bottom: 20px;
}

.hero-title em {
  font-family: 'IM Fell English', serif;
  font-style: italic;
  color: var(--crimson);
}

.hero-desc {
  max-width: 480px;
  margin: 0 auto 32px;
  color: var(--brown-mid);
  font-size: 0.95rem;
}

.btn-main {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.7rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--parchment);
  background-color: var(--brown-dark);
  border: 1px solid var(--gold);
  padding: 14px 36px;
  text-decoration: none;
  transition: background 0.3s, color 0.3s;
}

.btn-main:hover {
  background-color: var(--crimson);
  color: var(--parchment);
}


/* ============================================
   SECTION DIVIDER — decorative line between sections
   ============================================ */
.section-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--brown-warm), var(--gold), var(--brown-warm), transparent);
  opacity: 0.5;
}

/* ============================================
   SHARED SECTION STYLES
   ============================================ */
section {
  padding: 100px 40px;
  max-width: 1100px;
  margin: 0 auto;
}

/* Section 3: Key Organs — light parchment (same as hero) */
#gallery {
  max-width: 100%;
  background-color: var(--parchment);
  padding: 100px 60px;
}

/* Section 4: By the Numbers — dark brown */
#facts {
  max-width: 100%;
  background-color: var(--brown-dark);
  padding: 100px 60px;
}

/* Facts section text needs to be light since bg is dark */
#facts .section-label {
  color: var(--tan);
}

#facts h2 {
  color: var(--parchment);
}

#facts h2 em {
  color: var(--gold);
}

#facts .section-desc {
  color: var(--tan);
}

#facts .btn-back {
  color: var(--tan);
  border-color: var(--tan);
}

#facts .btn-back:hover {
  background-color: var(--tan);
  color: var(--brown-dark);
}

/* Fact cards on dark bg */
.fact-card {
  border: 1px solid var(--brown-warm);
  padding: 28px 20px;
  text-align: center;
  background: var(--brown-mid);
  opacity: 0;
  transform: translateY(20px);
}

.fact-card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fact-number {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  color: var(--gold);
  display: block;
  margin-bottom: 8px;
}

.fact-label {
  font-size: 0.85rem;
  color: var(--tan);
  font-style: italic;
}

.section-label {
  font-family: var(--font-heading);
  font-size: 0.65rem;
  letter-spacing: 5px;
  color: var(--brown-warm);
  text-transform: uppercase;
  margin-bottom: 10px;
}

section h2 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3.2rem);
  color: var(--brown-dark);
  margin-bottom: 16px;
}

section h2 em {
  font-style: italic;
  color: var(--crimson);
  font-family: var(--font-body);
}

.section-desc {
  color: var(--brown-mid);
  max-width: 520px;
  margin-bottom: 50px;
  font-size: 0.95rem;
}


/* ============================================
   SECTION 2: INTERACTIVE BODY
   ============================================ */
.body-wrapper {
  position: relative;
  width: 240px;
  margin: 0 auto 40px;
}

.body-svg {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 4px 16px rgba(60,30,10,0.18));
}

/* Each clickable dot on the body */
.organ-dot {
  position: absolute;
  width: 18px;
  height: 18px;
  background: var(--crimson);
  border: 2px solid var(--gold);
  border-radius: 50%;
  cursor: pointer;
  transform: translate(-50%, -50%);
  z-index: 5;
  /* No extra styling — the pulse-ring does the animation */
}

/* The pulsing ring around each dot */
.pulse-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 30px;
  height: 30px;
  transform: translate(-50%, -50%);
  border: 2px solid var(--crimson);
  border-radius: 50%;
  animation: pulse 1.8s ease-out infinite;
}

@keyframes pulse {
  0%   { transform: translate(-50%, -50%) scale(0.6); opacity: 1; }
  100% { transform: translate(-50%, -50%) scale(2);   opacity: 0; }
}

/* Active state when clicked */
.organ-dot.active {
  background: var(--gold);
  border-color: var(--crimson);
}

/* ============================================
   SECTION 3: ORGAN DETAIL + GALLERY STRIP
   ============================================ */

/* The two-column layout: icon left, text right */
.organ-detail {
  display: flex;
  gap: 48px;
  align-items: center;
  max-width: 800px;
  margin: 0 auto 60px;
  padding: 36px;
  border: 1px solid var(--tan);
  background: var(--parchment);
  animation: fadeInUp 0.4s ease;
}

.organ-detail-image {
  flex-shrink: 0;
  text-align: center;
}

.organ-big-icon {
  font-size: 6rem;
  display: block;
}

.organ-detail-text h3 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  color: var(--crimson);
  margin-bottom: 14px;
}

.organ-detail-text p {
  color: var(--brown-mid);
  font-size: 0.95rem;
  margin-bottom: 12px;
}

.detail-extra {
  font-style: italic;
  color: var(--brown-warm) !important;
  border-left: 2px solid var(--gold);
  padding-left: 14px;
}

/* ============================================
   SECTION 4: FACTS — btn-back only (cards handled above)
   ============================================ */
.facts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto 60px;
}

.btn-back {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.65rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--brown-dark);
  border: 1px solid var(--brown-warm);
  padding: 12px 28px;
  text-decoration: none;
  transition: background 0.3s, color 0.3s;
  margin-top: 20px;
}

.btn-back:hover {
  background-color: var(--brown-dark);
  color: var(--parchment);
}


/* ============================================
   FOOTER
   ============================================ */
footer {
  background: var(--brown-dark);
  color: var(--tan);
  text-align: center;
  padding: 48px 20px;
  font-size: 0.85rem;
}

.footer-logo {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  color: var(--gold);
  margin-bottom: 8px;
  letter-spacing: 4px;
}

.footer-small {
  margin-top: 10px;
  font-size: 0.75rem;
  color: var(--brown-warm);
}


/* ============================================
   RESPONSIVE — Mobile adjustments
   ============================================ */
@media (max-width: 700px) {
  .nav-links { display: none; }       /* Hide full nav on mobile */
  .hamburger { display: block; }      /* Show hamburger instead */

  section { padding: 70px 20px; }
  #gallery, #facts { padding: 70px 20px; max-width: 100%; }

  .hero-title { font-size: 3rem; }

  .body-wrapper { width: 180px; }
}