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

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Inter+Tight:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,400&family=JetBrains+Mono:wght@400;500;600&family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap');

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: var(--leading-normal);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  transition: background-color var(--duration-normal) var(--ease-out-expo), color var(--duration-normal) var(--ease-out-expo);
}

/* Custom Text Selection */
::selection {
  background-color: var(--accent);
  color: #FFFFFF;
}

/* Accessibility: Skip to Content */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--gutter);
  background: var(--text-primary);
  color: var(--bg-primary);
  padding: var(--space-sm) var(--space-md);
  font-weight: 600;
  font-size: var(--text-sm);
  z-index: 10000;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: top var(--duration-fast) var(--ease-out-expo);
}

.skip-link:focus {
  top: var(--space-md);
}

/* Focus Visible for Keyboard Users */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

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

/* Base Typographic Hierarchy */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 700;
  color: var(--text-primary);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

h1 { font-size: var(--text-h1); font-weight: 800; line-height: var(--leading-none); }
h2 { font-size: var(--text-h2); font-weight: 700; line-height: var(--leading-tight); }
h3 { font-size: var(--text-h3); font-weight: 600; }
h4 { font-size: var(--text-h4); font-weight: 600; }

p {
  color: var(--text-secondary);
  font-size: var(--text-body);
  line-height: var(--leading-relaxed);
  max-width: 68ch;
}

p.lead {
  font-size: var(--text-body-lg);
  line-height: var(--leading-normal);
  color: var(--text-primary);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration-fast) ease, opacity var(--duration-fast) ease;
}

img, svg, video {
  display: block;
  max-width: 100%;
  height: auto;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

/* Screen Reader Only Utility */
.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;
}

/* Container & Grid System */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.container-fluid {
  width: 100%;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(1rem, 2.5vw, 2.5rem);
}

/* Column Span Helpers (Mobile First) */
.col-12 { grid-column: span 12; }
.col-11 { grid-column: span 12; }
.col-10 { grid-column: span 12; }
.col-9  { grid-column: span 12; }
.col-8  { grid-column: span 12; }
.col-7  { grid-column: span 12; }
.col-6  { grid-column: span 12; }
.col-5  { grid-column: span 12; }
.col-4  { grid-column: span 12; }
.col-3  { grid-column: span 12; }
.col-2  { grid-column: span 12; }
.col-1  { grid-column: span 12; }

@media (min-width: 640px) {
  .col-sm-6 { grid-column: span 6; }
  .col-sm-4 { grid-column: span 4; }
  .col-sm-8 { grid-column: span 8; }
  .col-sm-12 { grid-column: span 12; }
}

@media (min-width: 1024px) {
  .col-lg-1  { grid-column: span 1; }
  .col-lg-2  { grid-column: span 2; }
  .col-lg-3  { grid-column: span 3; }
  .col-lg-4  { grid-column: span 4; }
  .col-lg-5  { grid-column: span 5; }
  .col-lg-6  { grid-column: span 6; }
  .col-lg-7  { grid-column: span 7; }
  .col-lg-8  { grid-column: span 8; }
  .col-lg-9  { grid-column: span 9; }
  .col-lg-10 { grid-column: span 10; }
  .col-lg-11 { grid-column: span 11; }
  .col-lg-12 { grid-column: span 12; }

  /* Offset helpers */
  .offset-lg-1 { grid-column-start: 2; }
  .offset-lg-2 { grid-column-start: 3; }
  .offset-lg-3 { grid-column-start: 4; }
  .offset-lg-4 { grid-column-start: 5; }
  .offset-lg-5 { grid-column-start: 6; }
  .offset-lg-6 { grid-column-start: 7; }
}

/* Eyebrow / Label Component */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: var(--text-label);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: var(--tracking-caps);
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.eyebrow-accent {
  color: var(--accent);
}

.eyebrow::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent);
}

.eyebrow-no-dot::before {
  display: none;
}

/* Section Wrapper Standard */
.section {
  padding-top: clamp(4rem, 8vw, 8.5rem);
  padding-bottom: clamp(4rem, 8vw, 8.5rem);
  position: relative;
}

.section-dark {
  background-color: var(--dark-bg);
  color: var(--dark-text);
  border-top: 1px solid var(--dark-border);
  border-bottom: 1px solid var(--dark-border);
}

.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--dark-text);
}

.section-dark p {
  color: var(--dark-text-muted);
}

.section-dark .eyebrow {
  color: var(--dark-text-muted);
}

/* Page Transition Overlay */
.page-transition-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: var(--text-primary);
  z-index: 99999;
  pointer-events: none;
  opacity: 0;
  transform: translateY(100%);
  transition: transform var(--duration-normal) var(--ease-out-expo), opacity var(--duration-normal) ease;
}

.page-transition-overlay.is-active {
  opacity: 1;
  transform: translateY(0%);
}

/* Preferences: Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .custom-cursor {
    display: none !important;
  }

  .marquee-track {
    animation: none !important;
  }
}