/* Global reset & base font */
* {
  padding: 0;
  margin: 0;
  font-family: 'Garamond', 'Times New Roman', serif;
}

/* =========================
   Background & Overlays
========================= */

body {
  /* Parchment + fantasy map */
  background-color: #e8d9a9;
  background-image:
    url('data:image/svg+xml;utf8,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><path d="M30,10 Q35,30 50,30 T70,10 T90,30 T30,30" stroke="%23a99c7d" fill="none" stroke-width="1" opacity="0.5"/><path d="M10,30 Q15,50 30,50 T50,30 T70,50 T10,50" stroke="%23a99c7d" fill="none" stroke-width="1" opacity="0.5"/><path d="M10,50 Q15,70 30,70 T50,50 T70,70 T10,70" stroke="%23a99c7d" fill="none" stroke-width="1" opacity="0.5"/><path d="M30,70 Q35,90 50,90 T70,70 T90,90 T30,90" stroke="%23a99c7d" fill="none" stroke-width="1" opacity="0.5"/><circle cx="20" cy="20" r="2" fill="%23795c34" opacity="0.7"/><circle cx="80" cy="40" r="2" fill="%23795c34" opacity="0.7"/><circle cx="50" cy="60" r="2" fill="%23795c34" opacity="0.7"/><circle cx="30" cy="80" r="2" fill="%23795c34" opacity="0.7"/><path d="M5,5 L15,15 M25,5 L15,15 M15,15 L15,25" stroke="%23795c34" stroke-width="0.5" opacity="0.5"/><path d="M85,15 L75,25 M65,15 L75,25 M75,25 L75,35" stroke="%23795c34" stroke-width="0.5" opacity="0.5"/><path d="M25,55 L35,65 M45,55 L35,65 M35,65 L35,75" stroke="%23795c34" stroke-width="0.5" opacity="0.5"/><path d="M65,75 L55,85 M45,75 L55,85 M55,85 L55,95" stroke="%23795c34" stroke-width="0.5" opacity="0.5"/></svg>'),
    radial-gradient(circle at center, rgba(232, 217, 169, 0.8) 0%, rgba(209, 190, 138, 0.8) 70%, rgba(189, 167, 114, 0.8) 100%);
  background-repeat: repeat;
  background-size: 300px 300px, cover;
  color: #f0e6d2;
  position: relative;
  min-height: 100vh;
}

/* Single ::before overlay with BOTH “aged effect” and “forest” layers (fixes duplicate :before) */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    /* Map details dashed ring + crosshair */
    url('data:image/svg+xml;utf8,<svg width="500" height="500" xmlns="http://www.w3.org/2000/svg"><path d="M100,100 C150,50 350,50 400,100 C450,150 450,350 400,400 C350,450 150,450 100,400 C50,350 50,150 100,100 Z" stroke="%23704214" fill="none" stroke-width="3" stroke-dasharray="10" opacity="0.3"/><path d="M 90,250 L150,250 M350,250 L410,250 M250,90 L250,150 M250,350 L250,410" stroke="%23704214" stroke-width="3" opacity="0.2" stroke-dasharray="5"/></svg>'),
    /* Aged vignette */
    radial-gradient(circle at center, transparent 0%, rgba(114, 84, 45, 0.1) 100%),
    /* Forest dots (was a 2nd body:before in HTML) */
    url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="150" height="150" viewBox="0 0 150 150"><circle cx="30" cy="30" r="10" fill="%23516d39" opacity="0.4"/><circle cx="60" cy="40" r="15" fill="%23516d39" opacity="0.4"/><circle cx="90" cy="25" r="12" fill="%23516d39" opacity="0.4"/><circle cx="120" cy="35" r="13" fill="%23516d39" opacity="0.4"/><circle cx="25" cy="70" r="14" fill="%23516d39" opacity="0.4"/><circle cx="55" cy="80" r="11" fill="%23516d39" opacity="0.4"/><circle cx="85" cy="65" r="13" fill="%23516d39" opacity="0.4"/><circle cx="115" cy="75" r="10" fill="%23516d39" opacity="0.4"/><circle cx="30" cy="110" r="12" fill="%23516d39" opacity="0.4"/><circle cx="60" cy="120" r="10" fill="%23516d39" opacity="0.4"/><circle cx="90" cy="105" r="15" fill="%23516d39" opacity="0.4"/><circle cx="120" cy="115" r="11" fill="%23516d39" opacity="0.4"/></svg>');
  background-repeat: no-repeat, no-repeat, no-repeat;
  background-size: cover, cover, 150px 150px;
  /* place the forest near bottom/left like before */
  background-position: center, center, 150px calc(100% - 100px);
  mix-blend-mode: multiply;
  z-index: -1;
}

/* Mountains stay on ::after */
body::after {
  content: "";
  position: fixed;
  top: 50px;
  left: 50px;
  width: 200px;
  height: 100px;
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="200" height="100" viewBox="0 0 200 100"><path d="M10,80 L30,40 L50,70 L70,30 L90,60 L110,20 L130,50 L150,30 L170,70 L190,50" stroke="%23704214" fill="none" stroke-width="2" opacity="0.5"/></svg>');
  background-repeat: no-repeat;
  background-size: contain;
  pointer-events: none;
  opacity: 0.5;
  z-index: -1;
}

/* =========================
   Book Container & Cover
========================= */

.book-container {
  perspective: 1000px;
  width: 100%;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.book {
  position: relative;
  width: 90%;
  max-width: 1000px;
  height: 90vh;
  max-height: 800px;
  transform-style: preserve-3d;
  transition: transform 1s;
}

.book-cover {
  position: absolute;
  width: 100%;
  height: 100%;
  transform-origin: left;
  background: linear-gradient(to right, #4a2511, #6d3915);
  border-radius: 5px 15px 15px 5px;
  box-shadow: inset 0 0 30px rgba(0, 0, 0, 0.5), 0 0 30px 5px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  backface-visibility: hidden;
  padding: 30px;
  box-sizing: border-box;
  z-index: 10;
  transform: rotateY(0deg);
  transition: transform 1.5s ease;
}
.book-cover.open { transform: rotateY(-160deg); }

.book-title-main {
  font-family: 'Times New Roman', serif;
  font-size: 3em;
  color: #f0e6d2;
  text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
  text-align: center;
  margin-bottom: 20px;
  letter-spacing: 2px;
  border: 3px solid #f0e6d2;
  padding: 20px 40px;
  background: rgba(74, 37, 17, 0.8);
  position: relative;
}
.book-title-main:before,
.book-title-main:after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  border: 3px solid #f0e6d2;
}
.book-title-main:before {
  top: -10px; left: -10px; border-right: none; border-bottom: none;
}
.book-title-main:after {
  bottom: -10px; right: -10px; border-left: none; border-top: none;
}

.cover-subtitle {
  font-family: 'Times New Roman', serif;
  font-size: 1.5em;
  color: #f0e6d2;
  margin-top: 20px;
  font-style: italic;
  text-shadow: 0 0 5px rgba(255, 215, 0, 0.3);
}

.cover-decoration {
  margin: 30px 0;
  width: 100px;
  height: 30px;
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="30" viewBox="0 0 100 30"><path d="M0,15 C25,5 75,5 100,15 C75,25 25,25 0,15 Z" stroke="%23f0e6d2" fill="none" stroke-width="2"/></svg>');
  background-repeat: no-repeat;
  background-position: center;
}

.open-book {
  position: absolute;
  font-family: 'Times New Roman', serif;
  background: none;
  border: 2px solid #f0e6d2;
  color: #f0e6d2;
  padding: 10px 20px;
  font-size: 1em;
  cursor: pointer;
  margin-top: 40px;
  transition: all 0.3s;
  text-shadow: 0 0 5px rgba(255, 215, 0, 0.3);
  bottom: 100px;
}
.open-book:hover {
  background: rgba(240, 230, 210, 0.1);
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

/* =========================
   Pages & Navigation
========================= */

.book-page {
  position: absolute;
  width: 100%;
  height: 100%;
  background: #f5efe0;
  color: #4a2511;
  box-shadow: inset 0 0 30px rgba(0, 0, 0, 0.2), 0 0 5px rgba(0, 0, 0, 0.1);
  border-radius: 5px 15px 15px 5px;
  padding: 40px;
  box-sizing: border-box;
  overflow-y: auto;
  display: none;
  background-image: url('data:image/png;base64,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');
  background-repeat: repeat;
  background-blend-mode: overlay;
  opacity: 0;
  transition: opacity 0.5s;
}
.book-page.active { display: block; opacity: 1; }

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
  border-bottom: 1px solid #4a2511;
  padding-bottom: 10px;
}
.page-title { font-family: 'Times New Roman', serif; font-size: 1.8em; color: #4a2511; }
.page-number { font-family: 'Times New Roman', serif; font-size: 1.5em; color: #8d6e63; }

.page-navigation {
  position: relative;
  bottom: auto;
  right: auto;
  display: flex;
  justify-content: flex-end;
  gap: 20px;
  margin-top: 30px;
}
.nav-button {
  background: none;
  border: none;
  font-family: 'Times New Roman', serif;
  color: #8d6e63;
  cursor: pointer;
  font-size: 1em;
  transition: all 0.3s;
  padding: 5px 15px;
  border-radius: 3px;
}
.nav-button:hover { color: #4a2511; background: rgba(141,110,99,0.1); }

/* =========================
   Bookmarks
========================= */

.bookmark-tabs {
  position: absolute;
  right: -20px;
  display: flex;
  flex-direction: column;
  gap: 15px;
  top: 100px;
  z-index: 5;
}
.bookmark {
  width: 30px;
  height: 80px;
  background: #8b4513;
  border-radius: 0 5px 5px 0;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition: all 0.3s;
  color: #f0e6d2;
  font-family: 'Times New Roman', serif;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  padding: 5px;
  box-shadow: 2px 2px 10px rgba(0,0,0,0.3);
}
.bookmark:nth-child(2) { background: #a0522d; }
.bookmark:nth-child(3) { background: #cd853f; }
.bookmark:nth-child(4) { background: #deb887; }
.bookmark:hover { transform: translateX(5px); }

/* =========================
   Content Sections
========================= */

.chapter-title {
  font-family: 'Times New Roman', serif;
  font-size: 3em;
  color: #4a2511;
  text-align: center;
  margin-bottom: 30px;
  text-shadow: 1px 1px 2px rgba(0,0,0,0.2);
}
.chapter-decoration {
  text-align: center;
  font-size: 2em;
  color: #8b4513;
  margin: 20px 0;
}

.introduction {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 40px;
  margin-bottom: 40px;
}
.intro-text { flex: 1; }
.intro-heading {
  font-family: 'Times New Roman', serif;
  font-size: 1.5em;
  margin-bottom: 15px;
  color: #4a2511;
}
.university {
  font-family: 'Times New Roman', serif;
  font-size: 2em;
  color: #8b4513;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 15px;
}
.university img { height: 40px; }
.intro-description { font-style: italic; margin-bottom: 20px; }
.intro-picture {
  flex: 0 0 40%;
  border: 8px solid #f0e6d2;
  box-shadow: 0 0 15px rgba(0,0,0,0.2);
  position: relative;
}
.intro-picture:before {
  content: "";
  position: absolute;
  top: -5px; left: -5px; right: -5px; bottom: -5px;
  border: 1px solid #4a2511;
  z-index: -1;
}
.intro-picture img { width: 100%; display: block; }

.contact-button {
  display: inline-block;
  text-decoration: none;
  background: #8b4513;
  color: #f0e6d2;
  padding: 10px 20px;
  border-radius: 5px;
  margin-top: 20px;
  font-family: 'Times New Roman', serif;
  transition: all 0.3s;
}
.contact-button:hover {
  background: #a0522d;
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* Quote */
.quote-block {
  background: #f0e6d2;
  padding: 30px;
  border-left: 5px solid #8b4513;
  margin: 40px 0;
  position: relative;
}
.quote-block:before {
  content: "“";
  position: absolute;
  top: 0; left: 10px;
  font-size: 5em;
  color: rgba(139,69,19,0.2);
  font-family: 'Georgia', serif;
  line-height: 1;
}
.quote {
  font-family: 'Times New Roman', serif;
  font-size: 2em;
  text-align: center;
  color: #4a2511;
  position: relative;
  z-index: 1;
}
.author {
  text-align: right;
  margin-top: 15px;
  font-style: italic;
  color: #8b4513;
}

/* Skills */
.skills-container {
  display: flex;
  gap: 30px;
  margin-top: 30px;
}
.skills-image { flex: 0 0 40%; }
.skills-image img {
  width: 100%;
  border: 5px solid #f0e6d2;
  box-shadow: 0 0 15px rgba(0,0,0,0.2);
}
.skills-grid {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.skill-box {
  border: 1px solid #8b4513;
  padding: 15px;
  background: #f0e6d2;
  box-shadow: 3px 3px 10px rgba(0,0,0,0.1);
}
.skill-box h3 {
  margin-bottom: 10px;
  color: #4a2511;
  font-family: 'Times New Roman', serif;
  border-bottom: 1px solid #8b4513;
  padding-bottom: 5px;
}

/* About */
.about-section {
  display: flex;
  gap: 40px;
  align-items: center;
}
.about-text { flex: 1; }
.about-text h2 {
  font-family: 'Times New Roman', serif;
  font-size: 2.5em;
  color: #4a2511;
  margin-bottom: 15px;
}
.about-text h3 { font-weight: normal; margin-bottom: 15px; line-height: 1.6; }
.about-image { flex: 0 0 40%; }
.about-image img {
  width: 100%;
  border: 8px solid #f0e6d2;
  box-shadow: 0 0 20px rgba(0,0,0,0.2);
  transform: rotate(-3deg);
}

/* Page corner / fold */
.page-turn-effect {
  position: absolute;
  right: 0; bottom: 0;
  width: 0; height: 0;
  border-style: solid;
  border-width: 0 0 50px 50px;
  border-color: transparent transparent #e5d9c3 transparent;
  box-shadow: -5px -5px 10px rgba(0,0,0,0.2);
  cursor: pointer;
  z-index: 2;
}

/* Animations */
@keyframes glow {
  0% { text-shadow: 0 0 5px rgba(255,215,0,0.3); }
  50% { text-shadow: 0 0 20px rgba(255,215,0,0.6); }
  100% { text-shadow: 0 0 5px rgba(255,215,0,0.3); }
}
.magical-glow { animation: glow 2s infinite; }

@keyframes pageTurn {
  0% { transform: rotateY(0deg); opacity: 1; }
  40% { transform: rotateY(40deg); opacity: 0.8; }
  100% { transform: rotateY(0deg); opacity: 0; }
}
.turning { animation: pageTurn 1s forwards; }

/* =========================
   Project-specific classes
   (to replace inline styles)
========================= */

.projects-container {
  display: flex;
  flex-direction: column;
  gap: 40px;
  margin-top: 30px;
}

.project-card {
  background: #f0e6d2;
  border: 2px solid #8b4513;
  padding: 25px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.2);
  position: relative;
  overflow: hidden;
}

.scroll-deco-top,
.scroll-deco-bottom {
  position: absolute;
  left: 0; right: 0;
  height: 15px;
  background-repeat: no-repeat;
}
.scroll-deco-top { top: 0; }
.scroll-deco-bottom { bottom: 0; }

/* Top scroll wave */
.scroll-deco-top {
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="15" viewBox="0 0 100 15"><path d="M0,10 C10,5 20,15 30,10 C40,5 50,15 60,10 C70,5 80,15 90,10 C100,5 110,15 120,10" stroke="%238b4513" fill="none" stroke-width="1"/></svg>');
}
/* Bottom scroll wave */
.scroll-deco-bottom {
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="15" viewBox="0 0 100 15"><path d="M0,5 C10,10 20,0 30,5 C40,10 50,0 60,5 C70,10 80,0 90,5 C100,10 110,0 120,5" stroke="%238b4513" fill="none" stroke-width="1"/></svg>');
}

.project-title {
  font-family: 'Times New Roman', serif;
  font-size: 1.8em;
  color: #4a2511;
  margin-bottom: 5px;
  text-align: center;
}

.project-meta {
  text-align: center;
  color: #8b4513;
  font-style: italic;
  margin-bottom: 20px;
}

.project-bullet {
  margin-bottom: 15px;
  line-height: 1.6;
  color: #4a2511;
}
.spark { font-size: 1.2em; color: #8b4513; }

.demo-box {
  margin-top: 25px;
  border: 1px solid #8b4513;
  padding: 15px;
  background-color: rgba(240,230,210,0.5);
  border-radius: 5px;
}
.demo-box h4 {
  font-family: 'Times New Roman', serif;
  color: #4a2511;
  margin-bottom: 12px;
  text-align: center;
  font-size: 1.2em;
}
.demo-desc {
  margin-bottom: 10px;
  line-height: 1.5;
  color: #4a2511;
  font-style: italic;
  text-align: center;
}
.demo-links { display: flex; flex-direction: column; gap: 12px; }

.project-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  padding: 8px 12px;
  background-color: #f0e6d2;
  border: 1px solid #8b4513;
  border-radius: 4px;
  color: #4a2511;
  transition: all 0.3s;
}
.project-link:hover { transform: translateY(-2px); box-shadow: 0 6px 14px rgba(0,0,0,0.15); }
.film { font-size: 1.2em; margin-right: 10px; color: #8b4513; }

/* “Favorite Tools” callout (Skills page) */
.favorite-tools {
  margin-bottom: 30px;
  padding: 20px;
  background-color: #f0e6d2;
  border-left: 5px solid #8b4513;
  box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}
.favorite-tools h3 {
  color: #4a2511;
  font-family: 'Times New Roman', serif;
  margin-bottom: 15px;
  font-size: 1.4em;
}
.favorite-tools p {
  font-style: italic;
  line-height: 1.6;
  color: #4a2511;
}

/* Section lede used on Projects page */
.section-lede {
  text-align: center;
  font-style: italic;
  margin: 40px 0;
  font-size: 1.2em;
  color: #8b4513;
}

/* =========================
   Responsive
========================= */

@media (max-width: 768px) {
  .book { width: 95%; height: 95vh; }
  .book-cover, .book-page { padding: 20px; }
  .book-title-main { font-size: 2em; padding: 15px 25px; }
  .cover-subtitle { font-size: 1.2em; }

  .introduction,
  .skills-container,
  .about-section { flex-direction: column; }

  .intro-picture,
  .skills-image,
  .about-image { margin-top: 20px; }

  .bookmark-tabs { right: -10px; }
  .bookmark { width: 20px; height: 60px; font-size: 0.8em; }
}