:root {
  --color-white: #FFFFFF;
  --color-ivory: #FFF9F5;
  --color-black: #1F1A1C;
  --color-gold: #F5A524;
  --color-gold-soft: #FFD166;
  /* -deep tokens double as small-text colors: each is >= 4.5:1 on white */
  --color-gold-deep: #A85B00;
  --color-champagne: #FFE8D6;
  --color-taupe: #7A6A6E;

  /* Joyful balloon-inspired palette */
  --color-pink: #FF6B8A;
  --color-pink-soft: #FFB3C1;
  --color-pink-deep: #C2325A;
  --color-yellow: #FFD166;
  --color-yellow-soft: #FFE8A3;
  --color-yellow-deep: #E6A812;
  --color-blue: #4DB8D9;
  --color-blue-soft: #A8E0F0;
  --color-blue-deep: #1E7391;
  --color-green: #6BCB9A;
  --color-green-soft: #B8EBD0;
  --color-green-deep: #2E7A55;

  /* Section surfaces shared by backgrounds and wave-divider fills */
  --surface-pink-tint: #FFF4F7;
  --surface-blue-tint: #E8F8FF;
  --surface-peach: #FFEDE3;

  --font-heading: 'Fraunces', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;

  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 48px;
  --space-xl: 80px;

  --max-width: 1200px;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 28px rgba(31, 26, 28, 0.08);
  --shadow-hover: 0 16px 40px rgba(232, 69, 106, 0.18);

  --gradient-party: linear-gradient(
    135deg,
    var(--color-pink) 0%,
    var(--color-yellow) 40%,
    var(--color-green) 70%,
    var(--color-blue) 100%
  );
  --gradient-warm: linear-gradient(
    135deg,
    var(--color-pink) 0%,
    var(--color-yellow) 55%,
    var(--color-pink-soft) 100%
  );
}

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 600ms ease-out, transform 600ms cubic-bezier(0.34, 1.4, 0.64, 1);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-ivory);
  color: var(--color-black);
  line-height: 1.6;
  background-image:
    radial-gradient(ellipse 80% 50% at 10% 0%, rgba(255, 107, 138, 0.08), transparent 50%),
    radial-gradient(ellipse 60% 40% at 90% 10%, rgba(77, 184, 217, 0.1), transparent 45%),
    linear-gradient(180deg, var(--color-ivory) 0%, #FFFFFF 40%, var(--color-ivory) 100%);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.15;
  font-optical-sizing: auto;
}

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

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

ul {
  list-style: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-md);
  background-image: var(--gradient-warm);
  color: var(--color-black);
  font-family: var(--font-body);
  font-weight: 700;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  box-shadow:
    0 10px 28px rgba(255, 107, 138, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.45);
  transition:
    transform 280ms cubic-bezier(0.34, 1.56, 0.64, 1),
    box-shadow 280ms ease-out,
    filter 200ms ease-out;
}

.btn:hover {
  transform: translateY(-3px) scale(1.04);
  filter: saturate(1.1) brightness(1.02);
  box-shadow:
    0 16px 36px rgba(255, 107, 138, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.btn:active {
  transform: translateY(0) scale(0.98);
}

.btn:focus-visible {
  outline: 3px solid var(--color-blue);
  outline-offset: 3px;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-pink-deep);
  margin-bottom: var(--space-xs);
}

.eyebrow--blue { color: var(--color-blue-deep); }
.eyebrow--green { color: var(--color-green-deep); }
.eyebrow--yellow { color: var(--color-gold-deep); }

.confetti {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: var(--space-sm);
  pointer-events: none;
}

.confetti span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: block;
}

.confetti span:nth-child(1) { background: var(--color-pink); }
.confetti span:nth-child(2) { background: var(--color-yellow); border-radius: 2px; transform: rotate(15deg); }
.confetti span:nth-child(3) { background: var(--color-blue); }
.confetti span:nth-child(4) { background: var(--color-green); border-radius: 2px; transform: rotate(-20deg); }
.confetti span:nth-child(5) { background: var(--color-pink-soft); }

.section-wave {
  display: block;
  width: 100%;
  height: clamp(40px, 6vw, 72px);
  margin-top: -1px;
  line-height: 0;
}

.section-wave svg {
  width: 100%;
  height: 100%;
  display: block;
}

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .btn {
    transition: none;
  }

  .btn:hover {
    transform: none;
  }
}