body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

@keyframes blob {
  0%   { transform: translate(0, 0) scale(1); }
  33%  { transform: translate(30px, -50px) scale(1.1); }
  66%  { transform: translate(-20px, 20px) scale(0.9); }
  100% { transform: translate(0, 0) scale(1); }
}

.animate-blob {
  animation: blob 7s infinite;
}

.animation-delay-2000 {
  animation-delay: 2s;
}

.animation-delay-4000 {
  animation-delay: 4s;
}

html {
  scroll-behavior: smooth;
  transition: background-color 0.3s ease, color 0.3s ease;
}

::selection {
  background-color: #e0e7ff;
  color: #312e81;
}

*:focus-visible {
  outline: 2px solid #6366f1;
  outline-offset: 2px;
}

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
  background: #94a3b8;
  border-radius: 9999px;
}

::-webkit-scrollbar-thumb:hover {
  background: #64748b;
}

.glass {
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.gradient-text {
  background: linear-gradient(135deg, #6366f1, #8b5cf6, #ec4899);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.card-hover {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -12px rgba(0, 0, 0, 0.15);
}

.btn-glow {
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.btn-glow::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s ease, height 0.6s ease;
}

.btn-glow:hover::after {
  width: 300px;
  height: 300px;
}

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

.fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

@media (max-width: 768px) {
  .hide-on-mobile {
    display: none;
  }
}

@media (min-width: 769px) {
  .hide-on-desktop {
    display: none;
  }
}

/* ===== Dark Mode ===== */
html.dark {
  color-scheme: dark;
}

html.dark body {
  background-color: #0f172a;
  color: #e2e8f0;
}

html.dark ::selection {
  background-color: #312e81;
  color: #e0e7ff;
}

html.dark ::-webkit-scrollbar-track {
  background: #1e293b;
}

html.dark ::-webkit-scrollbar-thumb {
  background: #475569;
}

html.dark ::-webkit-scrollbar-thumb:hover {
  background: #64748b;
}

html.dark .glass {
  background: rgba(15, 23, 42, 0.6);
  border-color: rgba(255, 255, 255, 0.1);
}

/* Dark mode theme toggle button */
.theme-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  cursor: pointer;
  transition: all 0.3s ease;
  color: #475569;
}

.theme-toggle-btn:hover {
  background: #e2e8f0;
  color: #1e293b;
  transform: scale(1.05);
}

html.dark .theme-toggle-btn {
  background: #1e293b;
  border-color: #334155;
  color: #fbbf24;
}

html.dark .theme-toggle-btn:hover {
  background: #334155;
  color: #fde68a;
}

/* Smooth transitions for theme switch */
body, nav, footer, section, div, input, select, button, a, p, h1, h2, h3, h4, h5, h6, span, li, ul, ol, table, thead, tbody, tr, td, th, label, form {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}