/* ── Base ─────────────────────────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  min-height: 100vh;
  overflow-x: hidden;
}

::selection {
  background: #99f6e4;
  color: #042f2e;
}

/* ── Scroll-reveal base (progressive enhancement — visible by default) ───── */
.reveal-up,
.reveal-left,
.reveal-right {
  opacity: 1;
  transform: none;
  transition: opacity 0.7s ease, transform 0.7s ease;
}

@media (prefers-reduced-motion: no-preference) {
  .reveal-up {
    opacity: 0;
    transform: translateY(32px);
  }
  .reveal-left {
    opacity: 0;
    transform: translateX(-40px);
  }
  .reveal-right {
    opacity: 0;
    transform: translateX(40px);
  }

  .reveal-up.visible,
  .reveal-left.visible,
  .reveal-right.visible {
    opacity: 1;
    transform: none;
  }
}

/* ── Navbar scroll state ─────────────────────────────────────────────────── */
#site-header.scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06), 0 4px 24px rgba(0, 0, 0, 0.04);
}

#site-header .pt-4 {
  padding-top: 0.5rem;
}

/* ── Floating animation ──────────────────────────────────────────────────── */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.animate-float {
  animation: float 4s ease-in-out infinite;
}

/* ── Hero blobs ──────────────────────────────────────────────────────────── */
@keyframes blob-drift-1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

@keyframes blob-drift-2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-25px, 25px) scale(1.08); }
  66% { transform: translate(15px, -15px) scale(0.92); }
}

@keyframes blob-drift-3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(20px, -20px) scale(1.06); }
}

.hero-blob {
  will-change: transform;
}

.blob-1 { animation: blob-drift-1 12s ease-in-out infinite; }
.blob-2 { animation: blob-drift-2 15s ease-in-out infinite; }
.blob-3 { animation: blob-drift-3 10s ease-in-out infinite; }

/* ── Mobile menu ─────────────────────────────────────────────────────────── */
#mobile-menu.open {
  display: block;
}

#mobile-menu.open[aria-hidden="true"] {
  aria-hidden: "false";
}

.mobile-link {
  display: block;
  padding: 0.5rem 0;
  border-bottom: 1px solid #f1f5f9;
}

.mobile-link:last-child {
  border-bottom: none;
}

/* ── Focus visible ───────────────────────────────────────────────────────── */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid #14b8a6;
  outline-offset: 2px;
  border-radius: 0.5rem;
}

/* ── Responsive tweaks ───────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .font-display {
    font-size: clamp(2rem, 8vw, 3rem);
  }
}