/* =========================
   GLOBAL RESET (SAFE)
========================= */

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

/* =========================
   CSS VARIABLES (FOUNDATION)
========================= */

:root {
  --white: #ffffff;
  --black: #0f172a;

  --text-base: 1rem;
  --radius-sm: 6px;
  --radius-md: 10px;

  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;

  --section-padding-desktop: clamp(64px, 6vw, 96px);
  --section-padding-mobile: clamp(48px, 8vw, 64px);
}

/* =========================
   BODY & TYPOGRAPHY
========================= */

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Poppins', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--white);
  color: var(--black);
  line-height: 1.6;

  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* =========================
   ELEMENT DEFAULTS
========================= */

a {
  color: inherit;
  text-decoration: none;
}

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

/* Prevent layout break from long strings */
p,
h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
}

/* =========================
   SECTION LAYOUT
========================= */

section {
  padding: var(--section-padding-desktop) 8%;
}

/* Mobile spacing */
@media (max-width: 768px) {
  section {
    padding: var(--section-padding-mobile) 6%;
  }
}

/* =========================
   ACCESSIBILITY (SAFE)
========================= */

/* Keyboard focus only */
:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 3px;
}

/* Reduced motion support */
@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;
  }
}

/* =========================
   SELECTION & SCROLL (POLISH)
========================= */

::selection {
  background: rgba(99, 102, 241, 0.2); /* subtle indigo */
}

::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 0, 0, 0.35);
}