/* Existing variables and reset */
:root {
  --gradient: linear-gradient(120deg, #4f46e5, #3b82f6);
  --primary: #3b82f6;
  --bg: #f4f7fa;
  --card-bg: #ffffff;
  --text-dark: #1e293b;
  --text-light: #64748b;
}

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

body {
  font-family: 'Segoe UI', sans-serif;
  background-color: var(--bg);
  color: var(--text-dark);
  line-height: 1.7;
}

/* --- NAVBAR --- */
nav {
  background: white;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.nav-container {
  max-width: 1100px;
  margin: auto;
  padding: 15px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--primary);
}

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

.nav-links a {
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 500;
  transition: color 0.3s ease;
}

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

/* --- HAMBURGER MENU --- */
.menu-icon {
  display: none;
  font-size: 26px;
  cursor: pointer;
}

#menu-toggle {
  display: none;
}

@media (max-width: 768px) {
  .nav-links {
    position: absolute;
    top: 65px;
    right: 0;
    background: white;
    flex-direction: column;
    width: 220px;
    padding: 15px;
    gap: 15px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    display: none;
  }

  /* Show menu when checkbox is checked */
  #menu-toggle:checked + .menu-icon + .nav-links {
    display: flex;
  }

  .menu-icon {
    display: block;
  }
}

/* --- HEADER --- */
header {
  background: var(--gradient);
  color: white;
  text-align: center;
  padding: 70px 20px;
  clip-path: polygon(0 0, 100% 0, 100% 85%, 0 100%);
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

header h1 {
  font-size: 42px;
  margin-bottom: 10px;
}

header p {
  font-size: 20px;
  font-weight: 300;
}

/* --- SECTIONS --- */
section {
  max-width: 1100px;
  margin: 40px auto;
  padding: 0 20px;
}

h2 {
  font-size: 26px;
  margin-bottom: 20px;
  border-left: 5px solid var(--primary);
  padding-left: 12px;
  color: var(--primary);
}

/* --- CARDS --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.card {
  background: var(--card-bg);
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.06);
  transition: all 0.3s ease;
  text-align: center;
  font-weight: 500;
}

.card:hover {
  transform: scale(1.05);
  background: #e0f2fe;
  color: #0c4a6e;
}

.card h3 {
  color: var(--primary);
  margin-bottom: 10px;
}

.card.edu {
  background: #fefce8;
  border-left: 4px solid #aca793;
}

.project p {
  font-size: 15px;
  color: var(--text-light);
}

/* --- CONTACT --- */
.contact a {
  display: block;
  margin-bottom: 10px;
  color: var(--primary);
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s;
}

.contact a:hover {
  color: #1d4ed8;
}

/* --- FOOTER --- */
footer {
  text-align: center;
  padding: 25px;
  color: #888;
  margin-top: 30px;
  font-size: 14px;
}