/* ===================================
   BASE & RESET STYLES
   =================================== */

/* CSS Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  font-style: normal !important;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Typography Reset */
h1, h2, h3, h4, h5, h6,
p, span, div, a, li, label,
input, textarea, button,
select, option {
  font-style: normal !important;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  color: var(--text-primary);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

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

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

/* Images */
img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

/* Forms */
input, button, textarea, select {
  font: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

/* Lists */
ul, ol {
  list-style: none;
}

/* Main Content */
main {
  flex: 1;
  width: 100%;
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container-fluid {
  width: 100%;
  padding: 0 var(--space-md);
}

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

.skip-link {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -100%);
  background: var(--gray-900);
  color: var(--white);
  padding: var(--space-sm) var(--space-md);
  font-weight: var(--font-weight-bold);
  border-radius: var(--radius-md);
  z-index: var(--z-tooltip);
  transition: transform var(--transition-base);
}

.skip-link:focus {
  transform: translate(-50%, 0);
}

/* Focus States */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

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

/* Scrollbar (WebKit) */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--gray-400);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gray-500);
}

/* Firefox Scrollbar */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--gray-400) var(--bg-secondary);
}