/* Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* Smooth scroll */
html {
  scroll-behavior: smooth;
}

/* Base Styles */
body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #f0f4f8;
  color: #111;
  line-height: 1.6;
  overflow-x: hidden;
}

/* Header */
header {
  background: #ffffff;
  padding: 1rem 0;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}
nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 40px;
}
nav ul li a {
  text-decoration: none;
  color: #00b4d8;
  font-weight: bold;
  transition: color 0.3s;
  position: relative;
  cursor: pointer;
  display: inline-block;
  user-select: none;
}
nav ul li a:hover {
  color: #0077b6;
}

/* Hero */
.hero {
  text-align: center;
  padding: 3rem 1rem;
  background: linear-gradient(to bottom, #caf0f8, #f0f4f8);
}
.hero img {
  width: 300px;
  max-width: 100%;
  border-radius: 12px;
  margin-bottom: 1rem;
  box-shadow: 0 6px 20px rgba(0,0,0,0.2);
}
.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 0.5rem;
}
.tagline {
  font-size: 1.5rem;
  color: #333;
}

/* Info Section */
.info-section {
  background: #ffffff;
  padding: 3rem 2rem;
  text-align: center;
}
.info-section h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}
.info-section p {
  max-width: 700px;
  margin: 0 auto 1rem;
}
.features {
  list-style: none;
  padding: 0;
  margin-top: 1rem;
}
.features li {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

/* Download Section */
.section {
  padding: 3rem 2rem;
  text-align: center;
}
.section h2 {
  font-size: 2.2rem;
  margin-bottom: 1rem;
}
iframe {
  margin-top: 1rem;
  max-width: 100%;
}

/* Footer */
footer {
  background: #ffffff;
  text-align: center;
  padding: 1rem 0;
  font-size: 0.9rem;
  color: #666;
  box-shadow: 0 -2px 8px rgba(0,0,0,0.05);
  position: relative;
  bottom: 0;
  width: 100%;
  margin-top: 3rem;
}

/* Animations */
.fade-in {
  opacity: 0;
  animation: fadeIn 1.5s forwards;
}
.slide-in {
  transform: translateY(-30px);
  opacity: 0;
  animation: slideIn 1.2s forwards;
}
.zoom-in {
  transform: scale(0.8);
  opacity: 0;
  animation: zoomIn 1.5s forwards;
}
.slide-up {
  transform: translateY(40px);
  opacity: 0;
  animation: slideUp 1.5s forwards;
}
@keyframes fadeIn {
  to { opacity: 1; }
}
@keyframes slideIn {
  to {
    transform: translateY(0);
    opacity: 1;
  }
}
@keyframes zoomIn {
  to {
    transform: scale(1);
    opacity: 1;
  }
}
@keyframes slideUp {
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* Rainbow Gradient for LOVE */
.rainbow-love .rainbow {
  background: linear-gradient(90deg, red, orange, yellow, green, blue, indigo, violet);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  animation: rainbowShift 4s linear infinite;
  font-weight: 900;
  letter-spacing: 0.08em;
}

@keyframes rainbowShift {
  0% {
    background-position: 0% 50%;
  }
  100% {
    background-position: 200% 50%;
  }
}

/* Fireworks container style */
.fireworks-container {
  position: relative;
  display: inline-block;
  font-weight: 900;
  color: #111;
  margin-left: 0.15em;
  user-select: none;
}

/* Fireworks canvas */
#fireworks {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  pointer-events: none;
  z-index: 10;
  width: 120px;
  height: 40px;
}

/* Exploding button particle style */
.particle {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  will-change: transform, opacity;
  z-index: 9999;
}