/* Base theme tokens */
:root {
  --bg: #0b1220;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --card: #0f172a;
  --accent: #22d3ee;
  --overlay: rgba(2, 6, 23, 0.55);
}

* { box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Ubuntu, 'Helvetica Neue', Arial, 'Noto Sans', 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', sans-serif;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.title {
  letter-spacing: 0.02em;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.3);
}

/* HERO */
.hero {
  min-height: 72vh;
  display: grid;
  place-items: center;
  position: relative;
  isolation: isolate;
}

.hero .hero-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to bottom, rgba(255,255,255,0) 0%, rgba(255,255,255,0.2) 30%, var(--bg) 95%),
    url('../img/raquetes.jpg');
  background-size: cover;
  background-position: center;
  filter: saturate(1.08) contrast(1.02);
  z-index: -2;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--overlay);
  z-index: -1;
}

/* Soft falling snow overlay using pure CSS */
.overlay-snow::before, .overlay-snow::after {
  content: "";
  position: absolute;
  inset: -10%;
  pointer-events: none;
  background-image:
    radial-gradient(2px 2px at 10% 20%, #fff 50%, transparent 52%),
    radial-gradient(3px 3px at 80% 30%, #fff 50%, transparent 52%),
    radial-gradient(2px 2px at 30% 80%, #fff 50%, transparent 52%),
    radial-gradient(4px 4px at 60% 60%, #fff 50%, transparent 52%),
    radial-gradient(2px 2px at 90% 70%, #fff 50%, transparent 52%);
  animation: snow 14s linear infinite;
  opacity: 0.7;
}

.overlay-snow::after {
  animation-duration: 20s;
  filter: blur(1px);
  opacity: 0.5;
}

@keyframes snow {
  0% { transform: translateY(-10%); }
  100% { transform: translateY(20%); }
}

/* Card */
.card {
  background: var(--card);
  color: var(--text);
}

.lead { color: var(--text); opacity: .9; }
footer { color: var(--muted); }

/* Buttons */
.btn-outline-secondary {
  border-radius: 999px;
  backdrop-filter: blur(4px);
}

/* Accessibility */
:focus-visible { outline: 2px dashed var(--accent); outline-offset: 3px; }

/* Utilities */
.shadow-lg { box-shadow: 0 20px 60px rgba(2, 6, 23, 0.16) !important; }
.rounded-4 { border-radius: 1.25rem !important; }

/* Responsive enhancements */
@media (max-width: 576px) {
  .display-4 { font-size: 2.2rem; }
  .hero { min-height: 68vh; }
}