/* === THEME VARIABLES === */
:root {
  --bg-color: #FFFDF6;
  --text-color: #000000;
  --accent-color: #FFD95A;
  --nav-bg: #FFFDF6;
  --link-color: #2B3A67;
  --card-bg: #ffffff;
  --badge-bg: #FFF4CC;
  --badge-border: #FFD95A;
  --footer-color: #999;
}

body.dark-mode {
  --bg-color: #121212;
  --text-color: #f1f1f1;
  --accent-color: #FFD95A;
  --nav-bg: #1e1e1e;
  --link-color: #90CAF9;
  --card-bg: #1f1f1f;
  --badge-bg: #333333;
  --badge-border: #FFD95A;
  --footer-color: #888;
}

/* === BASE === */
body {
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: 'Rubik', sans-serif;
  margin: 0;
  padding: 0;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* === NAVBAR === */
header.navbar {
  background-color: var(--nav-bg);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
  position: relative;
  z-index: 100;
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--link-color);
}

.menu-toggle {
  display: none;
  font-size: 28px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--link-color);
}

.nav-menu {
  display: flex;
  gap: 2rem;
  padding: 1rem;
}

.nav-menu a {
  text-decoration: none;
  color: var(--link-color);
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  transition: background-color 0.3s ease;
}

.nav-menu a:hover {
  background-color: var(--accent-color);
  color: var(--bg-color);
}

.btn-cv {
  font-weight: 600;
  border: 1px solid var(--link-color);
  border-radius: 6px;
  color: var(--text-color);
}

.theme-btn {
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  margin-left: 1rem;
  color: var(--text-color);
  transition: transform 0.3s ease, color 0.3s ease;
}

.theme-btn.animate {
  transform: rotate(180deg) scale(1.2);
}

/* === HERO === */
.hero {
  margin: 4rem 0;
}

.hero-content {
  display: flex;
  align-items: center;
  gap: 4rem;
  flex-wrap: wrap;
}

.hero-left {
  flex: 1 1 300px;
}

.hero-right {
  flex: 1 1 260px;
  display: flex;
  justify-content: center;
}

.intro {
  font-family: 'Caveat', cursive;
  font-size: 40px;
  color: var(--link-color);
  margin-bottom: 0.5rem;
}

.name {
  font-size: 42px;
  font-weight: bold;
  margin: 0.5rem 0;
  color: var(--text-color);
}

.name span {
  font-family: 'Caveat', cursive;
  color: var(--accent-color);
  font-size: 48px;
  margin-left: 6px;
  position: relative;
  top: -2px;
}

.desc {
  font-size: 18px;
  font-weight: 400;
  line-height: 1.7;
  max-width: 500px;
  color: var(--text-color);
  margin-top: 1rem;
}

.photo-frame {
  width: 100%;
  max-width: 320px;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  perspective: 1000px;
}

.photo-inner {
  width: 100%;
  height: 100%;
  position: relative;
  transition: transform 0.6s;
  transform-style: preserve-3d;
  border-radius: 50%;
}

.photo-frame:hover .photo-inner {
  transform: rotateY(180deg);
}

.photo-front, .photo-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: 50%;
  overflow: hidden;
}

.photo-front img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  border-radius: 50%;
}

.photo-back {
  background-color: var(--card-bg);
  color: var(--text-color);
  transform: rotateY(180deg);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1rem;
  text-align: center;
}

.contact-back h2 {
  margin-bottom: 0.5rem;
  color: var(--accent-color);
}

.contact-back p {
  margin: 0.3rem 0;
  /* font-size: 0.9rem; */
}

.contact-back i {
  margin-right: 0.5rem;
  color: var(--accent-color);
}

/* === SECTIONS === */
.section {
  margin: 4rem 0;
}

.section h2 {
  font-size: 28px;
  color: var(--link-color);
  border-bottom: 2px solid var(--accent-color);
  padding-bottom: 0.5rem;
  margin-bottom: 2rem;
}

.edu-item, .exp-item {
  margin-bottom: 2.5rem;
}

.edu-header, .exp-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.edu-header h3, .exp-header h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 0;
  color: var(--text-color);
  flex: 1;
}

.edu-date, .exp-date {
  font-size: 16px;
  color: #888;
  white-space: nowrap;
}

.edu-sub, .exp-sub {
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 0.5rem;
}

.exp-role {
  font-style: italic;
  font-size: 17px;
  font-weight: 500;
  color: var(--link-color);
  margin: 0.75rem 0 0.5rem 0;
}

.exp-item ul {
  padding-left: 1.2rem;
  margin: 0;
  line-height: 1.6;
}

.exp-item ul li {
  margin-bottom: 0.5rem;
}

.tech-stack {
  margin-top: 0.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
}

.tech-stack span {
  background-color: var(--badge-bg);
  color: var(--link-color);
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--badge-border);
  transition: background-color 0.3s ease, transform 0.2s ease;
}

.tech-stack span:hover {
  background-color: var(--accent-color);
  transform: scale(1.05);
  cursor: default;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

/* Card Container */
.project-card {
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.1);
}

/* Card Front */
.card-front {
  position: relative;
  background-size: cover;
  background-position: center;
  height: 420px;
  display: flex;
  align-items: flex-end;
  padding: 1.5rem;
  color: #fff;
  transition: transform 0.4s ease;
}

.project-card:hover .card-front {
  transform: scale(1.05);
}

/* Title + Icon */
.card-header {
  background: rgba(0, 0, 0, 0.6);
  padding: 0.8rem 1rem;
  border-radius: 8px;
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.card-header h3 {
  margin: 0;
  font-size: 1.25rem;
}

/* Overlay */
.overlay {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  background: rgba(0,0,0,0.9);
  color: #fff;
  opacity: 0;
  transition: opacity 0.4s ease;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0.5rem;
}

.project-card:hover .overlay {
  opacity: 1;
}

/* Overlay Content */
.overlay-content {
  max-width: 80%;
  text-align: left;
}

.overlay-content p {
  text-align: left;
  margin-top: 1rem;
  font-size: 0.95rem;
  line-height: 1.5;
}

/* Tech Stack */
.pj-tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0;
  margin: 1rem 0;
  list-style: none;
}

.pj-tech-stack li {
  background: #ffffff33;
  padding: 0.4rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
}

/* Buttons */
.project-links {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
}

.btn-project {
  background-color: var(--accent-color, #007BFF);
  color: white;
  padding: 0.4rem 1rem;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 500;
  transition: background 0.3s ease;
}

.btn-project:hover {
  background-color: var(--accent-color-dark, #0056b3);
}

#contact a {
  color: var(--link-color);
  text-decoration: underline;
}

.contact-icons {
  display: flex;
  gap: 2rem;
  justify-content: center;
  font-size: 2rem;
  margin-top: 1rem;
}

.contact-icons a {
  color: var(--link-color);
  transition: color 0.3s ease;
}

.contact-icons a:hover {
  color: var(--accent-color);
}



/* === FOOTER === */
footer {
  text-align: center;
  padding: 2rem;
  color: var(--footer-color);
  font-size: 0.9rem;
}

/* === RESPONSIVE === */


@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  .nav-menu {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    right: 2rem;
    background-color: var(--bg-color);
    padding: 1rem 2rem;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
    border-radius: 8px;
  }

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

  .hero-content {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .hero-left, .hero-right {
    flex: 1 1 100%;
    display: block;
  }

  .hero-left {
    margin-bottom: 2rem;
  }

  .photo-frame {
  margin: 0 auto;
  max-width: 240px;
  height: 240px;
}

  .name {
    font-size: 36px;
  }

  .name span {
    font-size: 42px;
  }

  .intro {
    font-size: 32px;
  }

  .section {
    text-align: center;
  }

  .edu-item, .exp-item {
    text-align: left;
  }

  .overlay-content {
    text-align: center;
  }
  #contact {
    font-size: 18px;
    padding: 0 1rem;
  }
}