/* ============================================
   🍎 Base Styles — Reset & Typography
   ============================================ */

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-primary);
  font-size: var(--fs-body);
  font-weight: var(--fw-regular);
  line-height: var(--lh-normal);
  color: var(--text-primary);
  background: var(--bg-primary);
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
  transition: color 0.4s ease, background 0.4s ease;
}

/* ── Rich Animated Background ── */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-bg);
  z-index: var(--z-background);
  transition: background 0.5s ease;
}

/* Subtle noise texture overlay for premium depth */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: var(--noise-opacity);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
  z-index: var(--z-background);
  pointer-events: none;
  transition: opacity 0.5s ease;
}

/* ── Links ── */
a {
  color: var(--accent-blue);
  text-decoration: none;
  transition: color var(--duration-normal) var(--ease-out);
}

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

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

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

/* ── Buttons ── */
button {
  cursor: pointer;
  border: none;
  outline: none;
  background: none;
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

/* ── Inputs ── */
input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  outline: none;
  border: none;
  background: none;
}

/* ── Typography ── */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-tight);
  color: var(--text-primary);
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
h4 { font-size: var(--fs-h4); }

p {
  color: var(--text-secondary);
  line-height: var(--lh-relaxed);
}

strong {
  font-weight: var(--fw-semibold);
}

small {
  font-size: var(--fs-small);
}

/* ── Selection ── */
::selection {
  background: var(--selection-bg);
  color: var(--text-primary);
}

::-moz-selection {
  background: var(--selection-bg);
  color: var(--text-primary);
}

/* ── Scrollbar — iOS thin style ── */
::-webkit-scrollbar {
  width: 5px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

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

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

/* ── Accessibility ── */
@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;
  }
}

/* ── Screen Reader Only ── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}