/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; line-height: 1.6; color: #1a1a2e; background: #fafafa; overflow-x: hidden; transition: background 0.3s, color 0.3s; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* Dark Mode */
@media (prefers-color-scheme: dark) {
  body { background: #0f0f1a; color: #e0e0e0; }
  header, section, footer { background: #1a1a2e; }
  .glass, .card, .banner, .cta, .search-box input, .search-box button { background: rgba(255,255,255,0.08); backdrop-filter: blur(12px); border-color: rgba(255,255,255,0.15); color: #e0e0e0; }
  nav ul li a:hover, .logo:hover { color: #ff8a80; }
  footer { border-top: 1px solid rgba(255,255,255,0.1); }
}

/* Glass & Card */
.glass, .card, .banner, .cta, section { background: rgba(255,255,255,0.7); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.3); border-radius: 24px; padding: 2rem; margin-bottom: 2rem; box-shadow: 0 8px 32px rgba(0,0,0,0.08); transition: transform 0.3s, box-shadow 0.3s, background 0.3s; }
.card:hover { transform: translateY(-6px); box-shadow: 0 16px 48px rgba(0,0,0,0.12); }

/* Gradient Banner */
.banner { background: linear-gradient(135deg, #ff9a9e 0%, #fad0c4 30%, #fbc2eb 60%, #a18cd1 100%); color: #1a1a2e; text-align: center; padding: 4rem 2rem; border: none; position: relative; overflow: hidden; }
.banner::after { content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, transparent 70%); animation: bannerFloat 12s infinite alternate; }
@keyframes bannerFloat { 0% { transform: translate(0,0) scale(1); } 100% { transform: translate(10%,10%) scale(1.2); } }
.banner h1 { font-size: 2.8rem; margin-bottom: 1rem; position: relative; z-index: 1; }
.banner p { font-size: 1.2rem; max-width: 700px; margin: 0 auto 2rem; position: relative; z-index: 1; }
.cta { display: inline-block; background: #d81b60; color: #fff; padding: 0.9rem 2.5rem; border-radius: 50px; font-weight: 600; font-size: 1.1rem; transition: all 0.3s; position: relative; z-index: 1; }
.cta:hover { background: #ad1457; transform: scale(1.05); box-shadow: 0 8px 24px rgba(216,27,96,0.4); }

/* Header & Nav */
header { padding: 0 2rem; }
nav { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; padding: 1.2rem 0; gap: 1rem; }
.logo { font-size: 1.8rem; font-weight: 800; background: linear-gradient(135deg, #d81b60, #ff6f91); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
nav ul { display: flex; gap: 2rem; flex-wrap: wrap; }
nav ul li a { font-weight: 500; padding: 0.5rem 0; position: relative; transition: color 0.3s; }
nav ul li a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: #d81b60; transition: width 0.3s; }
nav ul li a:hover::after { width: 100%; }
.search-box { display: flex; align-items: center; }
.search-box form { display: flex; gap: 0.5rem; }
.search-box input { padding: 0.6rem 1rem; border: 1px solid #ddd; border-radius: 50px; background: rgba(255,255,255,0.8); backdrop-filter: blur(4px); font-size: 0.9rem; transition: border 0.3s; }
.search-box input:focus { border-color: #d81b60; outline: none; }
.search-box button { padding: 0.6rem 1.2rem; border: none; background: #d81b60; color: #fff; border-radius: 50px; cursor: pointer; font-weight: 600; transition: background 0.3s; }
.search-box button:hover { background: #ad1457; }

/* Main & Sections */
main { max-width: 1200px; margin: 0 auto; padding: 2rem; }
section { margin-bottom: 3rem; padding: 2.5rem; animation: fadeUp 0.8s ease-out; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
h2 { font-size: 2.2rem; margin-bottom: 1.5rem; position: relative; display: inline-block; }
h2::after { content: ''; display: block; width: 60px; height: 4px; background: linear-gradient(90deg, #d81b60, #ff6f91); margin-top: 0.5rem; border-radius: 2px; }
h3 { font-size: 1.5rem; margin: 1.5rem 0 0.8rem; }
p { margin-bottom: 1rem; }
article { margin-bottom: 2rem; padding: 1.5rem; background: rgba(255,255,255,0.4); border-radius: 16px; transition: background 0.3s; }
article:hover { background: rgba(255,255,255,0.7); }
article h3 { margin-top: 0; }

/* FAQ Schema */
[itemscope] { margin-bottom: 1.5rem; }
[itemprop="name"] { font-size: 1.2rem; font-weight: 600; cursor: pointer; position: relative; padding-right: 2rem; }
[itemprop="name"]::after { content: '▼'; position: absolute; right: 0; top: 0; transition: transform 0.3s; }
[itemprop="name"]:hover::after { transform: rotate(180deg); }
[itemprop="acceptedAnswer"] { margin-top: 0.5rem; padding-left: 1rem; border-left: 3px solid #d81b60; }

/* HowTo */
#howto ul, #howto ol { padding-left: 1.5rem; margin-bottom: 1rem; }
#howto li { margin-bottom: 0.5rem; }

/* Contact */
.contact-info p { margin-bottom: 0.5rem; }

/* Footer */
footer { text-align: center; padding: 2rem; font-size: 0.9rem; color: #666; border-top: 1px solid #eee; margin-top: 2rem; }
footer p { margin-bottom: 0.5rem; }
footer a { color: #d81b60; }

/* Responsive */
@media (max-width: 768px) {
  nav { flex-direction: column; align-items: stretch; }
  nav ul { justify-content: center; gap: 1rem; }
  .search-box form { width: 100%; }
  .search-box input { flex: 1; }
  .banner h1 { font-size: 2rem; }
  .banner p { font-size: 1rem; }
  h2 { font-size: 1.8rem; }
  section { padding: 1.5rem; }
  main { padding: 1rem; }
  header { padding: 0 1rem; }
  .glass, .card { padding: 1.5rem; }
}

@media (max-width: 480px) {
  .banner h1 { font-size: 1.6rem; }
  .banner { padding: 2.5rem 1rem; }
  .cta { padding: 0.7rem 1.8rem; font-size: 1rem; }
  h2 { font-size: 1.5rem; }
  nav ul { gap: 0.6rem; font-size: 0.9rem; }
}

/* Scroll Animation (Intersection Observer fallback) */
@media (prefers-reduced-motion: no-preference) {
  section { opacity: 0; transform: translateY(30px); transition: opacity 0.8s ease-out, transform 0.8s ease-out; }
  section.visible { opacity: 1; transform: translateY(0); }
}