/* === Reset & Base === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,'Noto Sans SC',sans-serif;color:#1a1a2e;background:#f8f9fc;line-height:1.6}

/* === Header === */
.site-header{background:#fff;border-bottom:1px solid #e8ecf1;position:sticky;top:0;z-index:100}
.header-inner{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{display:flex;align-items:center;gap:8px;text-decoration:none;color:#1a1a2e;font-weight:700;font-size:1.25rem}
.logo-icon{color:#6c5ce7;font-size:1.5rem}
.header-nav{display:flex;gap:20px;align-items:center}
.header-nav a{text-decoration:none;color:#555;font-size:.9rem;font-weight:500;transition:color .2s}
.header-nav a:hover{color:#6c5ce7}

/* === Hero === */
.hero{max-width:900px;margin:0 auto;padding:60px 24px 40px;text-align:center}
.hero-title{font-size:2.8rem;font-weight:800;margin-bottom:12px;letter-spacing:-.02em}
.hero-title .dot{color:#6c5ce7}
.hero-sub{font-size:1.15rem;color:#666;margin-bottom:36px}

/* === Generator Box === */
.generator-box{background:#fff;border-radius:16px;padding:28px;box-shadow:0 2px 16px rgba(0,0,0,.06);border:1px solid #e8ecf1;text-align:left}
.input-row{display:flex;gap:16px;margin-bottom:16px;flex-wrap:wrap}
.input-group{display:flex;flex-direction:column;gap:6px;flex:1}
.input-group label{font-size:.85rem;font-weight:600;color:#444}
.input-group input,.input-group textarea,.input-group select{
  width:100%;padding:10px 14px;border:1.5px solid #dde1e8;border-radius:10px;
  font-size:.95rem;font-family:inherit;transition:border-color .2s;background:#fafbfc;
}
.input-group input:focus,.input-group textarea:focus,.input-group select:focus{
  outline:none;border-color:#6c5ce7;background:#fff;
}
.input-group textarea{resize:vertical;min-height:80px}

.btn-generate{
  align-self:flex-end;padding:12px 36px;background:#6c5ce7;color:#fff;
  border:none;border-radius:10px;font-size:1rem;font-weight:600;cursor:pointer;
  transition:background .2s,transform .1s;white-space:nowrap;
}
.btn-generate:hover{background:#5a4bd1}
.btn-generate:active{transform:scale(.98)}
.btn-generate:disabled{background:#b2b8c4;cursor:not-allowed}

/* === Loading === */
.loading-section{text-align:center;padding:60px 24px}
.spinner{width:40px;height:40px;border:3px solid #e8ecf1;border-top-color:#6c5ce7;border-radius:50%;animation:spin .8s linear infinite;margin:0 auto 16px}
@keyframes spin{to{transform:rotate(360deg)}}
.loading-section p{color:#888;font-size:.95rem}

/* === Error === */
.error-section{padding:40px 24px;text-align:center}
.error-box{display:inline-block;background:#fff3f3;border:1px solid #ffd4d4;border-radius:12px;padding:24px 32px}
.error-msg{color:#d63031;margin-bottom:12px}
.btn-retry{padding:8px 24px;background:#d63031;color:#fff;border:none;border-radius:8px;cursor:pointer;font-size:.9rem}

/* === Preview === */
.preview-section{max-width:900px;margin:0 auto;padding:40px 24px}
.preview-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;flex-wrap:wrap;gap:12px}
.preview-header h2{font-size:1.4rem;font-weight:700}
.preview-actions{display:flex;align-items:center;gap:12px}
.free-count{font-size:.85rem;color:#888}
.btn-download{
  padding:10px 24px;background:#00b894;color:#fff;border:none;border-radius:10px;
  font-size:.95rem;font-weight:600;cursor:pointer;transition:background .2s;
}
.btn-download:hover{background:#00a381}

.slide-preview{display:flex;flex-direction:column;gap:12px}
.slide-card{
  background:#fff;border-radius:12px;padding:28px 32px;
  box-shadow:0 1px 8px rgba(0,0,0,.05);border:1px solid #e8ecf1;
  display:grid;grid-template-columns:48px 1fr;gap:20px;align-items:start;
}
.slide-num{width:48px;height:48px;background:#6c5ce7;color:#fff;border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.1rem;flex-shrink:0}
.slide-content h3{font-size:1.2rem;font-weight:700;margin-bottom:10px;color:#1a1a2e}
.slide-content ul{padding-left:20px;color:#444}
.slide-content li{margin-bottom:6px;font-size:.95rem;line-height:1.5}
.slide-notes{margin-top:10px;padding:8px 12px;background:#f0f4ff;border-radius:8px;
  font-size:.82rem;color:#555;border-left:3px solid #6c5ce7}

/* === Templates === */
.templates-section{max-width:900px;margin:0 auto;padding:60px 24px}
.templates-section h2{text-align:center;font-size:1.8rem;margin-bottom:28px}
.template-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.template-card{
  background:#fff;border:2px solid #e8ecf1;border-radius:12px;padding:20px 12px;
  text-align:center;cursor:pointer;transition:border-color .2s,transform .1s;
}
.template-card:hover{transform:translateY(-2px)}
.template-card.active{border-color:#6c5ce7;background:#f8f7ff}
.template-preview{font-size:2.2rem;margin-bottom:8px}
.template-card span{font-size:.9rem;font-weight:500;color:#444}

/* === Pricing === */
.pricing-section{max-width:700px;margin:0 auto;padding:60px 24px}
.pricing-section h2{text-align:center;font-size:1.8rem;margin-bottom:28px}
.pricing-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.pricing-card{
  background:#fff;border:2px solid #e8ecf1;border-radius:16px;padding:28px;text-align:center;
}
.pricing-card.pro{border-color:#6c5ce7;background:#f8f7ff}
.pricing-card h3{font-size:1.2rem;margin-bottom:8px}
.price{font-size:2.4rem;font-weight:800;margin-bottom:16px;color:#1a1a2e}
.price span{font-size:.9rem;font-weight:400;color:#888}
.pricing-card ul{list-style:none;text-align:left;margin-bottom:20px}
.pricing-card li{padding:6px 0;font-size:.9rem;color:#555}
.pricing-card li::before{content:'\2713 ';color:#00b894;font-weight:700}
.btn-pricing,.btn-pricing-pro{
  width:100%;padding:10px;border-radius:10px;font-size:.95rem;font-weight:600;cursor:pointer;
}
.btn-pricing{background:#eee;color:#888;border:none}
.btn-pricing-pro{background:#6c5ce7;color:#fff;border:none;transition:background .2s}
.btn-pricing-pro:hover{background:#5a4bd1}

/* === Footer === */
.site-footer{background:#fff;border-top:1px solid #e8ecf1;padding:24px}
.footer-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;
  justify-content:space-between;flex-wrap:wrap;gap:12px}
.footer-inner p{color:#888;font-size:.85rem}
.footer-inner nav{display:flex;gap:16px}
.footer-inner nav a{color:#888;text-decoration:none;font-size:.85rem}
.footer-inner nav a:hover{color:#6c5ce7}

/* === Utility === */
.hidden{display:none!important}

/* === Responsive === */
@media(max-width:768px){
  .hero-title{font-size:2rem}
  .template-grid{grid-template-columns:repeat(2,1fr)}
  .pricing-grid{grid-template-columns:1fr}
  .slide-card{grid-template-columns:1fr}
  .slide-num{width:36px;height:36px;font-size:.9rem}
  .input-row{flex-direction:column}
  .btn-generate{align-self:stretch}
}