/* ==========================================================================
   Radhe Computer Base Styles & Reset
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--slate-600);
  background-color: var(--paper);
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--navy-900);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 { font-size: var(--text-4xl); font-weight: 700; }
h2 { font-size: var(--text-3xl); font-weight: 700; }
h3 { font-size: var(--text-2xl); font-weight: 600; }
h4 { font-size: var(--text-xl); font-weight: 600; }
h5 { font-size: var(--text-lg); font-weight: 600; }
h6 { font-size: var(--text-base); font-weight: 600; }

p {
  margin-bottom: 1rem;
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--navy-500);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--orange-500);
}

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

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

ul, ol {
  list-style: none;
}

/* Focus Ring Accessibility */
:focus-visible {
  outline: 3px solid var(--orange-500);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* Screen Reader Only Class */
.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 Layout */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

.container-narrow {
  max-width: 800px;
}

.container-wide {
  max-width: 1400px;
}

/* Section Spacing */
.section {
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  position: relative;
}

.section-sm {
  padding-top: var(--space-xl);
  padding-bottom: var(--space-xl);
}

.section-dark {
  background-color: var(--navy-900);
  color: #CBD5E1;
}

.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: #FFFFFF;
}

.section-blue {
  background-color: var(--navy-600);
  color: #E2E8F0;
}

.section-blue h1,
.section-blue h2,
.section-blue h3 {
  color: #FFFFFF;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-xl);
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  background-color: var(--navy-100);
  color: var(--navy-700);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: var(--radius-full);
  margin-bottom: 0.75rem;
}

.section-badge-orange {
  background-color: var(--orange-100);
  color: var(--orange-600);
}

.section-badge-dark {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--orange-400);
  border: 1px solid rgba(255, 138, 61, 0.25);
}

/* Scroll Reveal Base */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 600ms cubic-bezier(0.16, 1, 0.3, 1), transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Reduced Motion Respect */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal-on-scroll {
    opacity: 1 !important;
    transform: none !important;
  }
}