/* ============================================================
   KATY — THEN AND NOW  |  Main Stylesheet
   ============================================================
   Table of Contents:
     1. CSS Variables & Reset
     2. Navigation
     3. Page Layout
     4. Hero Sections
     5. Section Blocks & Typography
     6. Cards & Intro Elements
     7. Before-After Slider
     8. Carousel
     9. Standalone Image Container
    10. Timelines
    11. Map Iframes
    12. Page Navigation Buttons
    13. Conclusion Page
    14. Responsive
   ============================================================ */


/* 1. CSS Variables and Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
  --brown-dark: #3a2e24;
  --brown-mid: #493b31;
  --brown-light: #6b5344;
  --tan: #c9a87c;
  --tan-light: #e8d5b7;
  --cream: #f5efe6;
  --cream-dark: #ede3d4;
  --gold: #DAA520;
  --gold-bright: #FFD700;
  --white: #ffffff;
  --text-dark: #2c211a;
  --text-mid: #4a3728;
  --nav-height: 68px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Lora', serif;
  background: var(--cream);
  color: var(--text-dark);
  min-height: 100vh;
}


/* 2. Navigation */

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--brown-dark);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  z-index: 10000;
  box-shadow: 0 2px 12px rgba(0,0,0,0.4);
}

.nav-logo {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 18px;
  color: var(--tan-light);
  text-decoration: none;
  letter-spacing: 0.5px;
  cursor: pointer;
}

.nav-links {
  display: flex;
  gap: 6px;
  list-style: none;
}

.nav-links a {
  font-family: 'Montserrat', sans-serif;
  font-size: 12px;
  font-weight: 600;
  color: var(--tan-light);
  text-decoration: none;
  padding: 7px 13px;
  border-radius: 6px;
  transition: background 0.2s, color 0.2s;
  letter-spacing: 0.3px;
}

.nav-links a:hover,
.nav-links a.active {
  background: var(--brown-mid);
  color: var(--gold);
}

/* Hamburger button (mobile) */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--tan-light);
  border-radius: 2px;
  transition: all 0.3s;
}

/* Mobile dropdown menu */
.mobile-menu {
  display: none;
  position: fixed;
  top : var(--nav-height);
  left: 0;
  right: 0;
  background: var(--brown-dark);
  padding: 12px 0;
  z-index: 9999;
  flex-direction: column;
}

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

.mobile-menu a {
  font-family: 'Montserrat', sans-serif;
  font-size: 14px;
  font-weight: 600;
  color: var(--tan-light);
  text-decoration: none;
  padding: 12px 29px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

.mobile-menu a:hover {
  background: var(--brown-mid);
  color: var(--gold);
}


/* 3. Page Layout */
.page {
  display: block;
  padding-top: var(--nav-height);
  min-height: 100vh;
}

.page-active {
  display: block;
}

.page-content {
  max-width: 960px;
  margin: 0 auto;
  padding: 48px 28px 80px;
}

/* 4. Hero Sections */

/* Fullscreen into hero */
.hero {
  background: linear-gradient(160deg, var(--brown-dark) 0%, var(--brown-mid) 50%, var(--brown-light) 100%);
  min-height: 88vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 32px 80px;
  position: relative;
  overflow: hidden;
}

/* Subtle cross-hatch texture overlay */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23c9a87c' fill-opacity='0.06'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.4;
}

.hero-badge {
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gold);
  background: rgba(218,165,32,0.15);
  border: 1px solid rgba(218,165,32,0.4);
  padding: 6px 18px;
  border-radius: 50px;
  margin-bottom: 28px;
  position: relative;
}

.hero h1 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: clamp(38px, 7vw, 80px);
  color: var(--cream);
  line-height: 1.05;
  margin-bottom: 18px;
  position: relative;
}

.hero h1 span {
  color: var(--gold);
}

.hero p {
  font-size: clamp(15px, 2vw, 19px);
  color: var(--tan-light);
  max-width: 580px;
  line-height: 1.65;
  position: relative;
  margin-bottom: 40px;
}

.hero-btn {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 14px 36px;
  background: linear-gradient(135deg, var(--gold), var(--gold-bright));
  color: var(--brown-dark);
  border: none;
  border-radius: 50px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  position: relative;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 20px rgba(218,165,32,0.4);
}

.hero-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(218,165,32,0.5);
}

/* Shorter page-level hero banner (used on all pages except Introduction) */
.page-hero {
  background: linear-gradient(135deg, var(--brown-dark) 0%, var(--brown-mid) 100%);
  padding: 52px 32px 44px;
  text-align: center;
}

.page-hero h1 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: clamp(28px, 5vw, 52px);
  color: var(--cream);
  margin-bottom: 10px;
}

.page-hero p {
  color: var(--tan-light);
  font-size: 16px;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}


/* 5. Section Blocks & Typography */

.section-block {
  margin-bottom: 64px;
}

.section-divider {
  border: none;
  border-top: 2px solid var(--tan-light);
  margin: 56px 0;
  opacity: 0.5;
}

/* Large heading - used for major topics */
.section-title {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: clamp(22px, 4vw, 34px);
  color: var(--brown-dark);
  margin-bottom: 10px;
}

/* Medium heading - used for subtopics */
.section-subtitle {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: clamp(17px, 2.5vw, 22px);
  color: var(--brown-mid);
  margin-bottom: 14px;
  margin-top: 32px;
}

/*Small all-caps label above headings */
.section-label {
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 8px;
  display: block;
}

.body-text {
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--text-mid);
  margin-bottom: 16px;
}

/* Image credit line */
.caption {
  font-family: 'Montserrat', sans-serif;
  font-size: 11.5px;
  color: var(--brown-light);
  margin-top: 8px;
  line-height: 1.5;
}

.caption a {
  color: var(--brown-light);
}

/* Academic source citation */
.source-text {
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  color: #888;
  margin-top: 12px;
  line-height: 1.6;
}

.source-text a {
  color: #888;
}


/* 6. Cards & Intro Elements */

.intro-story {
  background: var(--white);
  border-radius: 16px;
  padding: 36px 40px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.07);
  border-left: 5px solid var(--gold);
  margin-bottom: 32px;
}

/* Grid of "What You'll Discover" cards */
.discover-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.discover-card {
  background: var(--white);
  border-radius: 12px;
  padding: 22px 20px;
  box-shadow: 0 3px 12px rgba(0,0,0,0.07);
  border-top: 3px solid var(--gold);
  font-family: 'Montserrat', sans-serif;
  font-size: 14px;
  font-weight: 600;
  color: var(--brown-mid);
  display: flex;
  align-items: center;
  gap: 12px;
}

.discover-card .icon {
  font-size: 24px;
  flex-shrink: 0;
}


/* 7. Before-After Slider */

.slider-wrapper {
  position: relative;
  width: 100%;
  max-width: 1200px;
  margin-top: 20px;
  overflow: visible;
}

.before-after-container {
  position: relative;
  width: 100%;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 8px 15px rgba(0,0,0,0.2);
  background: #000;
}

.after-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.before-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 50%;
  height: 100%;
  overflow: hidden;
  pointer-events: none;
}

.before-img {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: auto;
  object-fit: cover;
}

.slider-handle {
  position: absolute;
  top: 0%;
  left: 50%;
  transform: translateX(-50%);
  width: 10px;
  height: 100%;
  background: linear-gradient(to bottom, #DAA520, #FFD700);
  cursor: ew-resize;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 5px;
}

.slider-handle .arrow {
  position: absolute;
  font-size: 14px;
  color: white;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.slider-handle .arrow.left {left: -20px; }
.slider-handle .arrow.right {right: -20px; }
.slider-handle:hover .arrow { opacity: 1;}

.slider-note {
  font-family: 'Montserrat', sans-serif;
  font-size: 12px;
  font-style: italic;
  color: var(--brown-light);
  margin-top: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.slider-note::before {
  content: '🟡';
  font-style: normal;
}


/* Carousel */

.carousel-outer {
  position: relative;
  width: 100%;
  max-width: 900px;
  margin: 20px auto;
  overflow: visible;
}

.carousel-wrapper {
  position: relative;
  width: 100%;
  overflow: hidden;
  border-radius: 15px;
  box-shadow: 0 8px 15px rgba(0,0,0,0.2);
}

.carousel-container {
  display: flex;
  transition: transform 0.5s ease;
}

.carousel-image {
  flex: 0 0 100%;
  width: 100%;
  object-fit: cover;
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0,0,0,0.5);
  color: white;
  border: none;
  padding: 12px 16px;
  cursor: pointer;
  border-radius: 50%;
  z-index: 10;
  transition: background 0.3s ease;
}

.carousel-btn:hover {background: rgba(0,0,0,0.8);}
.carousel-btn.prev {left: 10px;}
.carousel-btn.next {right: 10px;}


/* Standalone Image Container */
.img-wrapper {
  position: relative;
  width: 100%;
  max-width: 1200px;
  margin-top: 20px;
  border-radius: 15px;
  box-shadow: 0 8px 15px rgba(0,0,0,0.2);
  overflow: visible;
}

.inner-img {
  width: 100%;
  height: auto;
  border-radius: 15px;
  overflow: hidden;
}

.inner-img img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}


/* Popup Animal (used on all containers) */

.popup-animal {
  position: absolute;
  bottom: -20px;
  width: 100px;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.35s ease, transform 0.35s ease;
  pointer-events: none;
  z-index: 9999;
}

.popup-animal.pop-right {right: 0;}
.popup-animal.pop-left {left: 0;}

.slider-wrapper:hover .popup-animal,
.carousel-outer:hover .popup-animal,
.img-wrapper:hover .popup-animal {
  opacity: 1;
  transform: translateY(0);
}


/* 10. Timelines */

.timeline {
  max-width: 800px;
  margin: auto;
  border-left: 3px solid var(--brown-mid);
  padding-left: 24px;
}

.timeline .event {
  position: relative;
  margin-bottom: 32px;
}

.timeline .event::before {
  content: '';
  position: absolute;
  left: -18px;
  top: 6px;
  width: 16px;
  height: 16px;
  background-color: var(--brown-mid);
  border-radius: 50%;
}

.timeline .date {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 6px;
  color: var(--brown-mid);
}

.timeline .content h3 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 18px;
  margin-bottom: 6px;
  color: var(--brown-dark);
}

.timeline .content p {
  margin: 6px 0 0;
  line-height: 1.65;
  font-size: 15px;
  color: var(--text-mid);
}


/* 11. Map Iframes */

.map-frame {
  width: 100%;
  height: 480px;
  border: none;
  border-radius: 15px;
  box-shadow: 0 8px 15px rgba(0,0,0,0.2);
  margin-top: 20px;
}


/* 12. Page Navigation Buttons */

.page-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 56px;
  padding-top: 28px;
  border-top: 2px solid var(--tan-light);
  gap: 16px;
  flex-wrap: wrap;
}

.page-nav-btn {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.5px;
  padding: 12px 28px;
  border-radius: 8px;
  cursor: pointer;
  border: 2px solid var(--brown-mid);
  transition: all 0.2s;
  color: var(--brown-mid);
  background: transparent;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-nav-btn:hover {
  background: var(--brown-mid);
  color: var(--cream);
}

.page-nav-btn.primary {
  background: var(--brown-dark);
  color: var(--cream);
  border-color: var(--brown-dark);
}

.page-nav-btn.primary:hover {
  background: var(--brown-mid);
}


/* 13. Conclusion Page */

.conclusion-hero-inner {
  background: var(--white);
  border-radius: 16px;
  padding: 40px 44px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  margin-bottom: 40px;
  border-top: 5px solid var(--gold);
}

.team-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.team-pill {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 13px;
  padding: 8px 18px;
  background: var(--cream-dark);
  border-radius: 50px;
  color: var(--brown-mid);
  border: 1px solid var(--tan);
}

.credits-block {
  background: var(--cream-dark);
  border-radius: 12px;
  padding: 28px 32px;
  margin-bottom: 28px;
}

.feedback-block {
  background: linear-gradient(135deg, var(--brown-dark), var(--brown-mid));
  border-radius: 16px;
  padding: 36px 40px;
  text-align: center;
  color: var(--cream);
}

.feedback-block p {
  font-size: 14.5px;
  line-height: 1.65;
  opacity: 0.85;
  margin-bottom: 20px;
}


/* 14. Responsive */

@media (max-width: 860px) {
  .nav-links {display: none;}
  .hamburger {display: flex;}
}

@media (max-width:  768px) {
  .popup-animal {width: 100px;}
}

@media (max-width: 600px) {
  .page-content {padding: 32px 16px 60px;}
  .intro-story {padding: 24px 20px;}
  .conclusion-hero-inner {padding: 28px 20px;}
  .credits-block {padding: 20px 18px;}
  .feedback-block {padding: 28px 20px;}
  nav {padding: 0 16px;}
}

@media (max-width: 480px) {
  .popup-animal {width: 80px;}
}

@media(max-width: 900px) and (min-width: 601px) {
  .carousel-image {
    max-height: 420px;
    object-fit: contain;
    background-color: #000;
  }
}