:root {
  /* Default (dark mode) theme colors */
  --bg-dark: #0A192F;
  --text-dark: #E0F7FA;
  --accent: #64FFDA;
  --glow: #A7FFEB;

  --dropdown-bg: #0F2A44;
  --dropdown-fg: #E0F7FA;
}

/* Base page styling */
body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: var(--bg-dark);
  color: var(--text-dark);
  overflow-x: hidden;
  transition: background 0.5s, color 0.5s;
}


/* Light mode override when 'dark-theme' class is applied */
body.dark-theme {
  --bg-dark: #FFFFFF;
  --text-dark: #0A192F;
  --accent: #00796B;
  --glow: #4DB6AC;

  --dropdown-bg: #E0F7FA;
  --dropdown-fg: #0A192F;
}

/* Full-screen animated background canvas */
canvas#particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
}

/* Hamburger button to toggle dropdown nav */
.dropdown-toggle {
  position: fixed;
  top: 1rem;
  left: 1rem;
  font-size: 1.8rem;
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  z-index: 1001;
}

/* Dropdown container (initially hidden) */
.dropdown-menu {
  position: fixed;
  top: 3.5rem;
  left: 1rem;
  display: none;
  flex-direction: column;
  background-color: var(--dropdown-bg);
  color: var(--dropdown-fg);
  border: 1px solid var(--glow);
  border-radius: 0.25rem;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
  min-width: 150px;
  z-index: 1000;
}

/* Each dropdown item (link or button) */
.dropdown-menu a,
.dropdown-menu button {
  padding: 0.75rem 1rem;
  text-align: left;
  background: none;
  border: none;
  color: inherit;
  width: 100%;
  text-decoration: none;
  box-sizing: border-box;
}

/* Highlight on hover for dropdown items */
.dropdown-menu a:hover,
.dropdown-menu button:hover {
  background-color: rgba(100, 255, 218, 0.1);
}

/* Center main content and add spacing from top nav */
main {
  padding-top: 6rem;
  text-align: center;
  z-index: 2;
  position: relative;
}

/* Main header styling */
.me h1 {
  font-size: 2.5rem;
  margin: 2rem 0 0.5rem;
}

/* Animated subheading text (typewriter effect) */
.subheading {
  font-size: 1.25rem;
  color: var(--accent);
  font-family: monospace;
  min-height: 2rem; /* reserve space during transitions */
}

/* Intro paragraph about the user */
.about-brief {
  font-size: 1.05rem;
  line-height: 1.6;
  max-width: 800px;
  margin: 2rem auto;
  padding: 0 1rem;
  color: var(--text-dark);
}

/* Container for action buttons */
.actions {
  margin: 3rem auto;
}

/* Base button styles */
.btn {
  padding: 0.75rem 1.5rem;
  background-color: var(--accent);
  color: #0A192F;
  text-decoration: none;
  font-weight: bold;
  margin: 0.5rem;
  border-radius: 8px;
  display: inline-block;
  transition: transform 0.2s, box-shadow 0.3s;
}

/* Hover effect for buttons */
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 10px var(--glow);
}

/* Optional outlined button style */
.btn.outline {
  background-color: transparent;
  border: 2px solid var(--accent);
  color: var(--accent);
}