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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: var(--text-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  transition: background 0.3s, color 0.3s;
  overflow-x: hidden;
}

:root {
  --text-color: #222;
  --glass-bg: rgba(255, 255, 255, 0.15);
  --glass-border: rgba(255, 255, 255, 0.3);
  --link-bg: rgba(255, 255, 255, 0.2);
  --link-hover: rgba(255, 255, 255, 0.35);
}

.dark-mode {
  --text-color: #f4f4f9;
  --glass-bg: rgba(0, 0, 0, 0.3);
  --glass-border: rgba(255, 255, 255, 0.1);
  --link-bg: rgba(0, 0, 0, 0.4);
  --link-hover: rgba(255, 255, 255, 0.2);
  background: linear-gradient(135deg, #667eea, #764ba2);
}

.light-mode {
  --text-color: #222;
  --glass-bg: rgba(255, 255, 255, 0.25);
  --glass-border: rgba(255, 255, 255, 0.4);
  --link-bg: rgba(255, 255, 255, 0.25);
  --link-hover: rgba(255, 255, 255, 0.4);
  background: linear-gradient(135deg, #f6f8ff, #dce0ff);
}

#theme-toggle {
  position: absolute;
  top: 20px;
  right: 20px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 10px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 18px;
  backdrop-filter: blur(12px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  transition: transform 0.2s, background 0.3s;
  color: var(--text-color);
}

#theme-toggle:hover {
  transform: rotate(20deg) scale(1.1);
}

.container {
  text-align: center;
  margin-top: 80px;
  padding: 25px;
  border-radius: 15px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(15px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.25);
  max-width: 420px;
  width: 90%;
  animation: fadeIn 1s ease-in-out;
  color: var(--text-color);
}

@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-14px); }
  100% { transform: translateY(0px); }
}

.profile-img {
  width: 130px;
  height: 130px;
  border-radius: 50%;
  border: 3px solid var(--glass-border);
  margin-bottom: 15px;
  animation: float 4s ease-in-out infinite;
}

h1 {
  margin: 10px 0 5px;
  font-size: 24px;
}

.bio {
  margin-bottom: 20px;
  font-size: 15px;
  line-height: 1.5;
  color: var(--text-color);
}

.links a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-decoration: none;
  background: var(--link-bg);
  color: var(--text-color);
  padding: 14px;
  margin: 12px 0;
  border-radius: 10px;
  font-weight: 600;
  transition: 0.3s;
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  position: relative;
  overflow: hidden;
}

.links a:hover {
  background: var(--link-hover);
  transform: scale(1.05);
}

.links a::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    120deg,
    transparent,
    rgba(255, 255, 255, 0.5),
    transparent
  );
  transition: 0.5s;
}

.links a:hover::before {
  left: 100%;
}


footer {
  margin-top: auto;
  padding: 15px;
  text-align: center;
  font-size: 13px;
  color: var(--text-color);
  background: var(--glass-bg);
  border-top: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
  width: 100%;
}

.social-icons {
  margin-top: 8px;
}

.social-icons a {
  color: var(--text-color);
  margin: 0 8px;
  font-size: 18px;
  transition: transform 0.3s, color 0.3s;
}

.social-icons a:hover {
  transform: scale(1.2);
  color: #fff;
}


@keyframes fadeIn {
  from {opacity: 0; transform: translateY(20px);}
  to {opacity: 1; transform: translateY(0);}
}

/* Responsive */
@media (max-width: 480px) {
  .container {
    padding: 18px;
  }
  .links a {
    font-size: 14px;
    padding: 12px;
  }
  .social-icons a {
    font-size: 16px;
    margin: 0 6px;
  }
}