/* =============================================================
   BASE — reset + element-level defaults
   Depends on: tokens.css (load tokens.css FIRST)
   ============================================================= */

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: var(--leading-normal);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Headings */
h1, h2, h3 { font-family: var(--font-display); }

h1 {
  font-weight: var(--weight-black);
  line-height: 0.98;
  font-size: var(--text-3xl);
  letter-spacing: -0.5px;
}

h2 {
  font-weight: var(--weight-semibold);
  font-size: var(--text-2xl);
  line-height: var(--leading-tight);
  letter-spacing: -0.5px;
}

h3 {
  font-weight: var(--weight-semibold);
  font-size: var(--text-xl);
}

a { color: inherit; }

img { max-width: 100%; display: block; }

/* Respect users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* -------------------------------------------------------------
   Background layers (fixed, decorative)
   ------------------------------------------------------------- */
.bg {
  position: fixed; inset: 0; z-index: var(--z-bg);
  background:
    radial-gradient(900px 600px at 78% -8%, rgba(234, 185, 95, 0.22), transparent 60%),
    radial-gradient(700px 700px at 12% 110%, rgba(193, 26, 40, 0.55), transparent 62%),
    var(--gradient-bg);
}

.grain {
  position: fixed; inset: 0; z-index: var(--z-fx); pointer-events: none; opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

canvas#snow { position: fixed; inset: 0; z-index: var(--z-fx); pointer-events: none; }

/* -------------------------------------------------------------
   Decorative scene (sleigh gliding + pine forest at the bottom)
   Sits above .bg but behind content, grain and snow.
   ------------------------------------------------------------- */
.scene {
  position: fixed; inset: 0;
  z-index: var(--z-bg);          /* same layer as .bg; later in DOM = painted on top */
  overflow: hidden;
  pointer-events: none;
}

/* Santa & reindeer gliding across the sky */
.sleigh {
  position: absolute;
  top: 12%;
  left: 0;
  width: clamp(150px, 20vw, 280px);
  color: var(--color-accent-soft);
  opacity: 0.5;
  filter: drop-shadow(0 0 14px rgba(234, 185, 95, 0.35));
  animation: glide 34s linear infinite;
}
.sleigh svg { width: 100%; height: auto; display: block; }

@keyframes glide {
  0%   { transform: translateX(-30vw) translateY(0); }
  50%  { transform: translateX(45vw) translateY(-14px); }
  100% { transform: translateX(130vw) translateY(0); }
}

/* Pine forest + snowy base along the bottom */
.treeline {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 180px;
  background: url("../images/trees-scene.svg") repeat-x left bottom;
  background-size: auto 180px;
  opacity: 0.62;
  /* fade the tree tips into the background so they don't fight content */
  -webkit-mask-image: linear-gradient(to top, #000 45%, transparent);
  mask-image: linear-gradient(to top, #000 45%, transparent);
}
@media (max-width: 560px) {
  .treeline { height: 130px; background-size: auto 130px; }
}

/* -------------------------------------------------------------
   Layout helpers
   ------------------------------------------------------------- */
.wrap   { max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.narrow { max-width: var(--container-narrow); }

section { padding: var(--section-pad) 0; position: relative; }

/* tighten vertical rhythm on phones */
@media (max-width: 560px) {
  :root { --section-pad: 3.4rem; }
}

/* Scroll-reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}
.reveal.in { opacity: 1; transform: none; }