/* Base Styles */
html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: 16px;
  font-weight: var(--font-weight-normal);
  color: var(--color-text);
  background-color: var(--color-light);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Container */
.container {
  width: 90%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; }

p {
  margin-bottom: var(--spacing-md);
}

/* Links */
a {
  color: var(--color-accent);
  transition: color var(--transition-fast);
}

a:hover,
a:focus {
  color: var(--color-accent-hover);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-weight: var(--font-weight-bold);
  text-align: center;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Sections */
.section {
  padding: var(--spacing-section) 0;
}

.section-title {
  text-align: center;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xxl);
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background-color: var(--color-accent);
}

/* Loading State */
.loading {
  text-align: center;
  padding: var(--spacing-xxl);
  color: var(--color-text-light);
  font-size: 1.125rem;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

/* Accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus styles */
*:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

*:focus:not(:focus-visible) {
  outline: none;
}