:root {
  --bg-color: #121212;
  --card-bg: #1e1e1e;
  --text-color: #e0e0e0;
  --accent-color: #82aaff;
  --slide-bg: #2b2b2b;
  --link-color: #82aaff;
  --link-hover: #c3f0ff;
  --shadow: rgba(0, 0, 0, 0.5);
  --hover-bg: #333;
  --hover-color: #fff;
  --active-bg: #82aaff;
  --active-color: #121212;
}

html[data-theme="light"] {
  --bg-color: #ffffff;
  --card-bg: #f0f0f0;
  --text-color: #000000;
  --accent-color: #007bff;
  --slide-bg: #ffffff;
  --link-color: #007bff;
  --link-hover: #3399ff;
  --shadow: rgba(0, 0, 0, 0.2);
  --hover-bg: #e6e6e6;
  --hover-color: #000;
  --active-bg: #007bff;
  --active-color: #ffffff;
}

body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
}

header {
  background-color: var(--bg-color);
  padding: 20px;
  text-align: center;
  position: relative;
  box-shadow: 0 2px 5px var(--shadow);
}

nav {
  background-color: var(--bg-color);
  padding: 15px;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
  box-shadow: 0 2px 5px var(--shadow);
  position: relative;
}

nav a {
  color: var(--link-color);
  text-decoration: none;
  font-weight: bold;
  font-size: 18px;
  padding: 10px 15px;
  border-radius: 10px;
  transition: background-color 0.3s, color 0.3s;
}

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

nav a.active {
  background-color: var(--active-bg);
  color: var(--active-color);
}

.toggle-theme {
  position: absolute;
  right: 20px;
  top: 12px;
  padding: 6px 12px;
  border: 2px solid var(--link-color);
  background: none;
  color: var(--link-color);
  font-weight: bold;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.toggle-theme:hover {
  background-color: var(--link-color);
  color: #000;
}

main {
  max-width: 1000px;
  margin: 40px auto;
  padding: 20px;
}

h1 {
  text-align: center;
  color: var(--text-color);
}

.center-text {
  text-align: center;
}

.project-card {
  background-color: var(--bg-color);
  padding: 20px;
  border-radius: 16px;
  margin-bottom: 25px;
  box-shadow: 0 6px 15px var(--shadow);
}

/* Slider */
.slider-container {
  position: relative;
  overflow: hidden;
}

.slider-wrapper {
  display: flex;
  transition: transform 0.5s ease-in-out;
}

.project-slide {
  flex: 0 0 250px;
  background-color: var(--bg-color);
  margin: 0 10px;
  border-radius: 10px;
  padding: 15px;
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
  box-shadow: 0 4px 12px var(--shadow);
}

.project-slide:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px var(--shadow);
}

.project-slide img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 12px;
  margin-bottom: 10px;
  transition: transform 0.3s ease;
  cursor: pointer;
}

.project-slide img:hover {
  transform: scale(1.05);
}

.project-slide h3 {
  color: var(--accent-color);
  font-size: 1.1em;
  margin-top: 10px;
}

.project-slide p {
  font-size: 0.95em;
  margin: 10px 0;
  color: var(--text-color);
}

.project-slide a {
  display: inline-block;
  margin-top: 10px;
  padding: 6px 12px;
  background-color: var(--accent-color);
  color: var(--active-color);
  border-radius: 6px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.project-slide a:hover {
  background-color: var(--link-hover);
}

/* Arrows */
.arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background-color: var(--hover-bg);
  color: var(--hover-color);
  border: none;
  font-size: 20px;
  padding: 10px;
  cursor: pointer;
  z-index: 10;
  border-radius: 50%;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.arrow-left {
  left: 0;
}

.arrow-right {
  right: 0;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  padding-top: 60px;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0,0,0,0.9);
}

.modal-content {
  margin: auto;
  display: block;
  max-width: 80%;
  max-height: 80%;
  border-radius: 12px;
  animation: zoomIn 0.3s ease;
}

@keyframes zoomIn {
  from { transform: scale(0.7); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.close {
  position: absolute;
  top: 30px;
  right: 35px;
  color: #f1f1f1;
  font-size: 40px;
  font-weight: bold;
  cursor: pointer;
}

/* Comments Section */
#disqus_thread {
  margin-top: 60px;
  color: var(--input-text);
  font-size: 16px;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Mobile Responsive */
@media (max-width: 600px) {
  nav {
    gap: 8px;
  }

  nav a {
    font-size: 14px;
    padding: 6px 10px;
  }

  .toggle-theme {
    font-size: 13px;
    padding: 5px 8px;
    top: auto;
    right: auto;
    position: relative;
    margin-top: 10px;
  }

  .project-slide {
    flex: 0 0 85%;
  }

  .slider-wrapper {
    gap: 0;
  }
}