:root {
  --bg: #f6f8fc;
  --text: #22223b;
  --secondary: #ffffffcc;
  --accent: #ff6f61;
  --hover-bg: #e0e7ff;
  --hover-underline: #5f6fff;
  --border-radius: 16px;
  --glass: rgba(255, 255, 255, 0.7);
  --shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.18);
  --gradient: linear-gradient(135deg, black);
}

body.dark {
  --bg: #181a23;
  --text: #f6f8fc;
  --primary: #a3bffa;
  --secondary: #23263aee;
  --accent: #ffb86b;
  --hover-bg: #23263a;
  --hover-underline: #a3bffa;
  --glass: rgba(35, 38, 58, 0.7);
  --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.35);
  --gradient: linear-gradient(135deg, #23263a 0%, #5f6fff 100%);
}

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

body {
  font-family: 'Poppins', sans-serif;
  background: var(--bg);
  color: var(--text);
  transition: background 0.4s, color 0.4s;
  min-height: 100vh;
}

.container {
  max-width: 1100px;
  margin: auto;
  padding: 2rem 1.5rem;
}

header {
  background: var(--secondary);
  box-shadow: var(--shadow);
  border-bottom: 1px solid #e0e7ff22;
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(8px);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.logo {
  font-size: 2rem;
  font-weight: bold;
  color: var(--primary);
  text-decoration: none;
  letter-spacing: 1px;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

nav {
  display: flex;
  align-items: center;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 1.2rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
  padding: 0.6rem 1.2rem;
  border-radius: var(--border-radius);
  position: relative;
  transition: background 0.3s, color 0.3s;
  overflow: hidden;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 8px;
  left: 20%;
  width: 60%;
  height: 2px;
  background: var(--hover-underline);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.3s;
}

.nav-links a:hover,
.nav-links a.active {
  background: var(--hover-bg);
  color: var(--primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  transform: scaleX(1);
}


.section {
  padding: 4rem 0 2rem 0;
}

.section h2 {
  font-size: 2.2rem;
  margin-bottom: 1.5rem;
  border-left: 6px solid var(--primary);
  padding-left: 1rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.home-flex {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2.5rem;
  min-height: 350px;
}

.home-info {
  flex: 1;
  min-width: 260px;
}

.home-info h2 {
  font-size: 2.3rem;
  margin-bottom: 1rem;
  background: none;
  -webkit-text-fill-color: unset;
  color: var(--primary);
}

.home-info p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  color: var(--text);
}

.btn {
  display: inline-block;
  padding: 0.7rem 2rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
  background: var(--gradient);
  border: none;
  border-radius: var(--border-radius);
  box-shadow: 0 2px 12px 0 rgba(95, 111, 255, 0.08);
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s;
  position: relative;
  overflow: hidden;
}




.home-img {
  flex: 1;
  text-align: center;
  min-width: 220px;
}

.home-img img {
  max-width: 320px;
  width: 100%;
  border-radius: 18px;
  box-shadow: var(--shadow);
  border: 4px solid var(--primary);
  background: var(--glass);
}

.about {
  background: var(--secondary);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
}

.about p {
  font-size: 1.15rem;
  color: var(--text);
  margin-bottom: 0.5rem;
}
.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr); /* Always 2 columns */
  gap: 1.5rem;
  margin-top: 1rem;
}

.skill-category {
  margin-bottom: 2rem;
}

.skill-category-title {
  font-size: 1.5rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  color: var(--primary);
  border-left: 4px solid var(--primary);
  padding-left: 0.8rem;
  background: var(--glass);
}

.skill-card {
  background: var(--glass);
  border-radius: var(--border-radius);
  padding: 2rem 1rem;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid #e0e7ff33;
  transition: transform 0.3s, background 0.3s;
  position: relative;
  overflow: hidden;
}

.skill-card:hover {
  transform: translateY(-8px) scale(1.03);
  background: var(--hover-bg);
}


.icon-container {
  width: 64px;
  height: 64px;
  margin: 0 auto 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  border-radius: 50%;
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 16px rgba(95, 111, 255, 0.13);
}

.skill-card h4 {
  font-size: 1.15rem;
  margin: 0.7rem 0 0 0;
  color: var(--primary);
  font-weight: 600;
}

.projects-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.project-card {
  display: flex;
  flex-direction: row;
  gap: 1.5rem;
  align-items: center;
  background: var(--glass);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  border: 1px solid #e0e7ff33;
  transition: transform 0.3s, background 0.3s;
  min-height: 240px;
}

.project-card:hover {
  transform: translateY(-8px) scale(1.03);
  background: var(--hover-bg);
}

.project-img img {
  width: 240px;
  max-width: 100%;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(95, 111, 255, 0.08);
  border: 2px solid var(--primary);
  background: #fff;
}

.project-info {
  flex: 1;
}

.project-info h3 {
  font-size: 1.3rem;
  margin-bottom: 0.6rem;
  color: var(--primary);
}

.project-info p {
  font-size: 1rem;
  margin-bottom: 1rem;
  color: var(--text);
}

.project-info .btn {
  margin-right: 1rem;
  margin-bottom: 0.5rem;
}
.contact {
  padding: 3rem 0;
  background: var(--bg);
}

.section-title {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 2rem;
  color: var(--text);
}

.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--glass);
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  gap: 2rem;
  max-width: 600px;
  margin: 0 auto;
}

.contact-form {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid #ccc;
  border-radius: 8px;
  background: #fff;
  font-size: 1rem;
  color: #333;
  transition: border 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  outline: none;
}

.submit-btn {
  background-color: var(--accent);
  color: #fff;
  padding: 0.75rem 1.2rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-weight: bold;
  transition: background 0.3s;
}

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

.social-links {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

.social-btn {
  background: black;
  color: #fff;
  padding: 1rem;
  border-radius: 20%;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.3s, transform 0.3s;
}

.social-btn:hover {
  background: var(--hover-underline);
  transform: scale(1.1);
}


.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  border-radius: var(--border-radius);
  border: 1px solid #ccc;
  background: var(--secondary);
  color: var(--text);
  font-size: 1rem;
  transition: border 0.3s, background 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  outline: none;
  background: var(--glass);
}

.contact-form .btn {
  align-self: center;
  margin-top: 0.5rem;
}

/* Responsive Styles */
@media (max-width: 1100px) {
  .container {
    padding: 2rem 1rem;
  }
  .projects-list {
    grid-template-columns: 1fr;
  }
}@media (max-width: 900px) {
  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 70px;
    right: 20px;
    width: 220px;
    background-color: var(--secondary);
    border-radius: 12px;
    box-shadow: var(--shadow);
    padding: 1rem;
    z-index: 1000;
    animation: fadeIn 0.3s ease-in-out;
  }


  .nav-links.show {
    display: flex;
  }

  .nav-links li {
    margin: 0.5rem 0;
  }

  .nav-links a {
    color: var(--text);
    padding: 0.6rem 1rem;
    border-radius: 8px;
    transition: background 0.3s;
  }

  .nav-links a:hover,
  .nav-links a.active {
    background: var(--hover-bg);
    color: var(--primary);
  }

  @keyframes fadeIn {
    from {
      opacity: 0;
      transform: translateY(-5px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}


@media (max-width: 700px) {
  .project-card {
    flex-direction: column;
    align-items: flex-start;
    min-height: unset;
  }
  .project-img img {
    width: 100%;
    max-width: 100%;
  }
  .skills-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 600px) {
  .container {
    padding: 1rem 0.5rem;
  }
  .section {
    padding: 2.5rem 0 1rem 0;
  }
 .skills-grid {
    grid-template-columns: 1fr; /* Stack in one column on small screens */
  }
  .project-card {
    padding: 1rem;
  }
  .contact-card {
    padding: 1.2rem 0.7rem;
  }
  .contact-form {
    padding: 0 1rem;
  }
  .home-info .btn {
    display: block;
    width: 100%;
    text-align: center;
    margin-bottom: 0.8rem;
  }
 
}

@media (max-width: 400px) {
  .home-info h2,
  .section h2 {
    font-size: 1.6rem;
  }
  .home-info p,
  .about p,
  .project-info p {
    font-size: 1rem;
  }
  .skills-grid {
    grid-template-columns: 1fr;
  }
}

 .back-to-top {
      display: inline-block;
      margin-top: 1rem;
      font-weight: bold;
      color: var(--primary);
      text-decoration: none;
    }

    .back-to-top:hover {
      color: var(--accent);
    }
    .btn-group {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  max-width: 500px;
  margin-top: 2px;
}
.btn-group .btn {
  width: 100%;
  text-align: center;
  padding: 0.8rem 1.5rem;
  font-size: 1.1rem;
}
.btn-group .btn:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 4px 24px rgba(95, 111, 255, 0.18);
  background: var(--hover-bg);
  color: black;
}
.btn-group .btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 12px rgba(95, 111, 255, 0.08);
  background: var(--primary);
}
.btn-group .btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(95, 111    , 255, 0.2);
  background: var(--primary);
}
.btn-group .btn:disabled {
  background: #ccc;
  color: #666;
  cursor: not-allowed;
  box-shadow: none;
}
.btn-group .btn:disabled:hover {
  transform: none;    
  box-shadow: none;
  background: #ccc;
}
.btn-group .btn:disabled:focus {
  outline: none;
  box-shadow: none;
  background: #ccc;
}
.btn-group .btn:disabled:active {
  transform: none;
  box-shadow: none;
  background: #ccc;
}

.header-actions {
  display: flex;
  gap: 1rem;
  align-items: center;
  margin-left: auto;
}

#toggle-theme {
  background: var(--glass);
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--primary);
  cursor: pointer;
  transition: background 0.3s, color 0.3s;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.menu-toggle span {
  height: 3px;
  width: 24px;
  background-color: var(--text);
  border-radius: 4px;
  transition: all 0.3s ease;
}

/* Show menu icon on mobile */
@media (max-width: 900px) {
  .menu-toggle {
    display: flex;
  }
}
.mobile-menu {
  position: absolute;
  top: 60px; /* adjust based on header */
  right: 20px;
  background-color: var(--secondary);
  padding: 1rem;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
  z-index: 100;
  width: 200px;
  display: flex;
  flex-direction: column;
}
.footer {
  background: var(--glass); /* or #f8f9fa for light, or #111 for dark */
  padding: 1.5rem 0;
  border-top: 1px solid #e0e0e0;
  margin-top: 3rem;
  text-align: center;
}

.footer-container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.footer p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text);
}

.highlight-blue {
  color: #003366; /* classic navy blue */
}
.highlight-red {
  color: #8B0000; /* dark red */
}
.highlight-green {
  color: #006400; /* dark green */
}
.highlight-gold {
  color: #B8860B; /* dark goldenrod */
}
.highlight-purple {
  color: #4B0082; /* indigo */
}