/* Base Styles and Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-primary);
  color: var(--text-dark);
  line-height: 1.7;
  font-size: 16px;
  font-weight: 400;
  background: linear-gradient(180deg, #f8fafc 0%, #e0f2fe 50%, #f8fafc 100%);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-dark);
  margin-bottom: 0.5em;
}

h1 { font-size: 3.5rem; letter-spacing: -0.02em; }
h2 { font-size: 2.5rem; letter-spacing: -0.01em; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: 1em;
  font-family: var(--font-primary);
  font-weight: 400;
  line-height: 1.8;
}

strong, b {
  font-weight: 600;
}

/* Code and monospace */
code, pre {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

/* Links */
a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color var(--transition-speed);
}

a:hover {
  color: var(--primary-dark);
}

/* Smooth scrolling for anchor links */
html {
  scroll-behavior: smooth;
}

/* Link hover effects */
a {
  transition: all var(--transition-speed);
}

/* Accessibility improvements */
*:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Selection color */
::selection {
  background: var(--primary-color);
  color: var(--text-light);
}

::-moz-selection {
  background: var(--primary-color);
  color: var(--text-light);
}

/* Scrollbar Styles */
::-webkit-scrollbar {
  width: 17px;
}

::-webkit-scrollbar-track {
  box-shadow: inset 0 0 5px grey;
  border-radius: 10px;
}

::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes blink {
  to {
    opacity: 0;
  }
}

.blink {
  animation: blink 0.5s infinite;
}