:root {
  --bg-color: #121212;
  --text-color: #eee;
  --details-bg: #121212;
  --btn-bg: #eee;
  --btn-hover: #9b9b9b;
  --accent-color: #2E7D32;
  --card-bg: #1e1e1e;
}

body.light-mode {
  --bg-color: #f5f5f5;
  --text-color: #121212;
  --details-bg: #ffffff;
  --btn-bg: #121212;
  --btn-hover: #444;
  --card-bg: #ffffff;
  --accent-color: #4CAF50;
}

/* Scrollbar */
body::-webkit-scrollbar {
  width: 10px;
}
body::-webkit-scrollbar-track {
  background: #2e2e2e;
  border-radius: 10px;
}
body::-webkit-scrollbar-thumb {
  background-color: #555;
  border-radius: 10px;
  border: 2px solid #2e2e2e;
}
body::-webkit-scrollbar-thumb:hover {
  background-color: #777;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html{
  scroll-behavior: smooth;
}

body {
  font-family: 'Courier New', Courier, monospace;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  transition: background-color 0.4s, color 0.4s;
}

a {
  color: inherit;
  text-decoration: none;
}

.theme-btn {
  position: fixed;
  top: 80px;
  right: 20px;
  font-size: 1.5em;
  padding: 10px;
  border: none;
  background-color: var(--text-color);
  color: var(--bg-color);
  border-radius: 5px;
  cursor: pointer;
  z-index: 1000;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 5%;
  background-color: var(--card-bg);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  font-size: 1.8rem;
  font-weight: bold;
  color: var(--accent-color);
  font-family: system-ui, -apple-system, sans-serif;
}

.logo span {
  color: var(--text-color);
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 20px;
}

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

.navlink{
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    font-size: 1.5em;
    border: 2px solid var(--accent-color);
    padding: 5px;
    border-radius: 12.5%;
    transition-duration: 500ms;
}
.navlink:hover{
    background-color: var(--text-color);
    color: var(--bg-color);
}

.btn {
  background-color: var(--accent-color);
  color: var(--btn-bg);
  padding: 10px 20px;
  border-radius: 5px;
  font-weight: bold;
  transition: background 0.3s;
}

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

.hero {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  padding: 60px 5%;
  background-color: var(--bg-color);
  height: 100vh;
}

.hero-text {
  flex: 1;
  max-width: 600px;
}

.hero-text h1 {
  font-size: 3rem;
  margin-bottom: 20px;
  color: var(--accent-color);
  font-family: system-ui, -apple-system, sans-serif;
}

#typewriter {
  font-size: 1.2rem;
  display: inline-block;
  border-right: 2px solid var(--text-color);
  margin-bottom: 30px;
  white-space: nowrap;
  overflow: hidden;
}

.hero-image {
  border-radius: 50%;
  height: 200px;
  width: 200px;
}

.hero-image img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}

section{
  height: 87vh;
}

.features {
  padding: 60px 5%;
  background-color: var(--card-bg);
  text-align: center;
  padding-top: 13vh;
  height: 100vh;
}

.features h2 {
  font-size: 2rem;
  margin-bottom: 40px;
  color: var(--accent-color);
}

.feature-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
}

.card {
  background-color: var(--card-bg);
  border-radius: 10px;
  padding: 20px;
  width: 280px;
  text-align: left;
  border: 2px solid var(--accent-color);
}

.card summary {
  font-weight: bold;
  cursor: pointer;
  /* color: var(--accent-color); */
  color: var(--text-color);
  margin-bottom: 10px;
  font-size: 1.1rem;
}

.card p {
  margin-top: 10px;
}

.models{
  text-align: center;
  padding: 13vh;
  height: 100vh;
}

.model-links{
  display: block;
  text-align: center;
  width: 100%;
}

.modelnav{
  padding-top: 80px;
  height: 200px;
  width: 200px;
  font-size: 2em;
  background-color: var(--btn-bg);
  color: var(--bg-color);
  border-radius: 50%;
  margin: 0 auto 10vh auto;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  font-weight: 500;
  transition-duration: 500ms;
  cursor: pointer;
}

.modelnav:hover{
  background-color: var(--accent-color);
  color: var(--btn-bg);
}

.about {
  padding: 60px 5%;
  background-color: var(--bg-color);
  text-align: center;
  padding-top: 13vh;
  height: 100vh;
}

.about h2 {
  font-size: 2rem;
  color: var(--accent-color);
  margin-bottom: 20px;
}

footer {
  background-color: var(--card-bg);
  text-align: center;
  padding: 20px;
  font-size: 0.9rem;
  color: var(--text-color);
}

.slogan {
  margin-top: 10px;
  font-weight: 750;
  color: var(--accent-color);
}

@media (max-width: 768px) {
  .hero {
    flex-direction: column;
    text-align: center;
  }
  
  .hero-text {
    margin-bottom: 30px;
  }
  
  .feature-cards {
    flex-direction: column;
    align-items: center;
  }
}

.typewriter-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
}

.typewriter-btn {
  background: var(--accent-color);
  color: var(--btn-bg);
  border: none;
  border-radius: 4px;
  padding: 5px 10px;
  cursor: pointer;
  font-size: 14px;
  transition: background 0.3s;
}

.typewriter-btn:hover {
  background: var(--btn-hover);
}

.typewriter-speed {
  width: 100px;
  cursor: pointer;
}

.feature-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
  align-items: flex-start;
}

.card {
  background-color: var(--card-bg);
  border-radius: 10px;
  padding: 20px;
  width: 280px;
  min-height: 100px;
  text-align: left;
  border: 2px solid var(--accent-color);
  transition: all 0.3s ease;
  overflow: hidden;
  flex-shrink: 0;
}

.card[open] {
  padding-bottom: 30px;
}

.card summary {
  font-weight: bold;
  cursor: pointer;
  color: var(--text-color);
  margin-bottom: 10px;
  font-size: 1.1rem;
  list-style: none;
}

.card[open] summary {
  list-style-type: disclosure-open;
}

.card p {
  margin-top: 10px;
}

.feature-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
  align-items: flex-start;
}

.card {
  background-color: var(--card-bg);
  border-radius: 10px;
  padding: 20px;
  width: 280px;
  min-height: 100px;
  text-align: left;
  border: 2px solid var(--accent-color);
  transition: all 0.3s ease;
  overflow: hidden;
  flex-shrink: 0;
}

.card[open] {
  padding-bottom: 30px;
}

.card summary {
  font-weight: bold;
  cursor: pointer;
  color: var(--text-color);
  margin-bottom: 10px;
  font-size: 1.1rem;
  list-style: none;
}

.card[open] summary {
  list-style-type: disclosure-open;
}

.card p {
  margin-top: 10px;
}

#typewriter {
  min-height: 1.5em;        /* Reserve vertical space */
  display: inline-block;    /* Prevent line breaks */
  white-space: nowrap;      /* Prevent text wrapping */
  overflow: hidden;         /* Hide overflow during typing */
}