body {
  margin: 0;
  font-family: Arial, sans-serif;
  line-height: 1.6;
  background: #f5f5f5;
  color: #333;
}

/* Theme Variables */
:root {
  --bg-color: #f5f5f5;
  --text-color: #333;
  --card-bg: #fff;
  --header-bg: #222;
  --header-text: #fff;
}

body.dark-mode {
  --bg-color: #121212;
  --text-color: #f1f1f1;
  --card-bg: #1e1e1e;
  --header-bg: #000;
  --header-text: #f1f1f1;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  line-height: 1.6;
  background: var(--bg-color);
  color: var(--text-color);
  transition: background 0.3s, color 0.3s;
}

header {
  background: var(--header-bg);
  color: var(--header-text);
  padding: 20px 0;
  transition: background 0.3s, color 0.3s;
}

header nav ul li a {
  color: var(--header-text);
  text-decoration: none;
}

.project-card {
  background: var(--card-bg);
  padding: 15px;
  border-radius: 10px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  transition: background 0.3s, color 0.3s;
}

/* Toggle Button */
#theme-toggle {
  background: transparent;
  border: 2px solid var(--header-text);
  border-radius: 50%;
  color: var(--header-text);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 5px 10px;
  margin-top: 10px;
  transition: all 0.3s ease;
}

#theme-toggle:hover {
  background: var(--header-text);
  color: var(--header-bg);
}

header {
  background: #222;
  color: #fff;
  padding: 20px 0;
}

header .container {
  text-align: center;
}

header nav ul {
  list-style: none;
  padding: 0;
}

header nav ul li {
  display: inline;
  margin: 0 10px;
}

header nav ul li a {
  color: #fff;
  text-decoration: none;
}

.container {
  width: 80%;
  margin: auto;
  padding: 20px 0;
}

h1, h2, h3 {
  color: #222;
}

.resume-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 15px;
}

.resume-btn {
  display: inline-block;
  padding: 10px 18px;
  background: #222;
  color: #fff;
  font-weight: bold;
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.3s ease, transform 0.2s ease;
}

.resume-btn:hover {
  background: #444;
  transform: translateY(-2px);
}

.resume-btn.secondary {
  background: #555;
}

.resume-btn.secondary:hover {
  background: #777;
}

/* Dark mode support */
body.dark-mode .resume-btn {
  background: #f1f1f1;
  color: #121212;
}

body.dark-mode .resume-btn:hover {
  background: #ccc;
}

body.dark-mode .resume-btn.secondary {
  background: #999;
  color: #121212;
}

body.dark-mode .resume-btn.secondary:hover {
  background: #bbb;
}

html {
  scroll-behavior: smooth; /* fallback smooth scrolling */
}

/* Fade-in animation */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in-visible {
  opacity: 1;
  transform: translateY(0);
}

.skills-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.project-card {
  background: #fff;
  padding: 15px;
  border-radius: 10px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  text-align: center;
}

.project-card a {
  display: inline-block;
  margin: 5px;
  padding: 8px 12px;
  background: #222;
  color: #fff;
  border-radius: 5px;
  text-decoration: none;
}

footer {
  text-align: center;
  padding: 15px;
  background: #222;
  color: #fff;
  margin-top: 20px;
}