/* Base resets and defaults */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-speed) var(--transition-ease),
              color var(--transition-speed) var(--transition-ease),
              border-color var(--transition-speed) var(--transition-ease);
}

main {
  flex: 1;
  width: 100%;
}

/* Accessibility - custom visible focus ring */
*:focus-visible {
  outline: 2px solid var(--color-accent-hover);
  outline-offset: 3px;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-text-primary);
  line-height: 1.25;
  margin-bottom: 0.5em;
}

h1 {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

h2 {
  font-size: 1.85rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-top: 1.5em;
}

h3 {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-top: 1.2em;
}

h4 {
  font-size: 1.15rem;
  font-weight: 600;
}

p {
  margin-bottom: 1rem;
  color: var(--color-text-primary);
  opacity: 0.9;
  line-height: 1.65;
}

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

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

/* Typography elements */
strong, b {
  font-weight: 600;
  color: var(--color-text-primary);
}

ul, ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.5rem;
}

/* Containers */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* Utilities */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted) !important; }
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.hidden {
  display: none !important;
}

/* Custom Premium Badge and status badges */
.badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-free {
  background-color: var(--color-badge-free-bg);
  color: var(--color-badge-free-text);
}

.badge-premium {
  background-color: var(--color-premium-bg);
  color: var(--color-premium-text);
  border: 1px solid var(--color-premium);
}

.badge-coming-soon {
  background-color: rgba(75, 140, 110, 0.15);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

/* Transition utility */
.theme-transitioning,
.theme-transitioning * {
  transition: background-color var(--transition-speed) var(--transition-ease),
              color var(--transition-speed) var(--transition-ease),
              border-color var(--transition-speed) var(--transition-ease),
              box-shadow var(--transition-speed) var(--transition-ease) !important;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg);
}
::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-sm);
  border: 2px solid var(--color-bg);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent);
}