/* ═══════════════════════════════════════════════
   MaxTop Tools — Shared Styles (全站共用)
   Version: 2026-06-03
   ═══════════════════════════════════════════════ */

/* ── CSS Variables ── */
:root {
  --bg: #ffffff;
  --bg-alt: #f5f5f7;
  --text: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-tertiary: #aeaeb2;
  --accent: #0071e3;
  --accent-hover: #0077ed;
  --border: #e5e5e7;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.08);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.10);
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-xl: 36px;
  --max-width: 1100px;
}

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

html{
  scroll-behavior:smooth;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'SF Pro Display','Segoe UI',sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.5;
  overflow-x:hidden;
}

/* ── Navigation (全站共用) ── */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,0.8);
  backdrop-filter:blur(20px) saturate(180%);
  -webkit-backdrop-filter:blur(20px) saturate(180%);
  border-bottom:1px solid rgba(0,0,0,0.06);
}
.nav-inner{
  max-width:var(--max-width);margin:0 auto;
  padding:0 24px;height:52px;
  display:flex;align-items:center;justify-content:space-between;
}
.nav-logo{font-size:20px;font-weight:700;color:var(--text);text-decoration:none;letter-spacing:-0.5px}
.nav-logo span{color:var(--accent)}
.nav-links{display:flex;gap:24px;list-style:none}
.nav-links a{text-decoration:none;color:var(--text-secondary);font-size:14px;font-weight:500;transition:color 0.2s}
.nav-links a:hover{color:var(--text)}
.nav-cta{
  background:var(--accent);color:#fff;
  padding:8px 18px;border-radius:20px;
  font-size:13px;font-weight:600;
  text-decoration:none;cursor:pointer;transition:all 0.2s;
}
.nav-cta:hover{background:var(--accent-hover);transform:translateY(-1px)}

/* ── Breadcrumb ── */
.breadcrumb{padding:80px 24px 0;max-width:var(--max-width);margin:0 auto;font-size:13px;color:var(--text-secondary)}
.breadcrumb a{color:var(--accent);text-decoration:none}

/* ── Section Headings (共用) ── */
.section-label{
  font-size:13px;font-weight:600;letter-spacing:0.08em;
  text-transform:uppercase;color:var(--accent);margin-bottom:12px;
}
.section-title{
  font-size:clamp(24px,3vw,32px);font-weight:700;
  letter-spacing:-0.02em;margin-bottom:16px;
}
.section-subtitle{font-size:17px;color:var(--text-secondary);max-width:560px;line-height:1.6}

/* ── Buttons (共用) ── */
.btn{
  display:inline-flex;align-items:center;gap:6px;
  padding:14px 28px;border-radius:100px;
  font-size:15px;font-weight:600;
  text-decoration:none;cursor:pointer;
  transition:all 0.25s;border:none;
}
.btn-primary{
  background:var(--accent);color:#fff;
  box-shadow:0 4px 16px rgba(0,113,227,0.25);
}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-2px)}
.btn-secondary{background:var(--bg-alt);color:var(--text);border:1px solid var(--border)}
.btn-secondary:hover{background:#eeeef0;transform:translateY(-2px)}
.btn-wa{background:#25D366;color:#fff}
.btn-wa:hover{background:#22c35e;transform:translateY(-2px)}

/* ── Badge ── */
.badge{background:var(--bg-alt);border:1px solid var(--border);padding:6px 14px;border-radius:100px;font-size:12px;font-weight:600;color:var(--text)}

/* ── Ceramic Card (共用) ── */
.ceramic-card{
  background:linear-gradient(135deg,#fff 0%,#fafafa 50%,#f5f5f7 100%);
  border:1px solid rgba(0,0,0,0.06);border-radius:var(--radius-lg);
  padding:36px;
  box-shadow:0 4px 24px rgba(0,0,0,0.03),inset 0 1px 0 rgba(255,255,255,0.8);
  position:relative;overflow:hidden;
}
.ceramic-card::after{
  content:'';position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,0.6),transparent);
}

/* ── Footer (共用) ── */
.footer{
  padding:32px 24px;background:var(--bg-alt);
  border-top:1px solid var(--border);
  font-size:13px;color:var(--text-secondary);text-align:center;
}

/* ── Animations (共用) ── */
@keyframes fadeUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.animate{animation:fadeUp 0.6s ease-out forwards;opacity:0}
.d1{animation-delay:0.1s}.d2{animation-delay:0.2s}.d3{animation-delay:0.3s}.d4{animation-delay:0.4s}

/* ── WhatsApp Floating Button (全站共用) ── */
.whatsapp-float{
  position:fixed;bottom:24px;right:24px;z-index:999;
  width:60px;height:60px;border-radius:50%;
  background:#25D366;box-shadow:0 4px 16px rgba(37,211,102,0.4);
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:all 0.3s;text-decoration:none;
}
.whatsapp-float:hover{transform:scale(1.1);box-shadow:0 6px 24px rgba(37,211,102,0.5)}
.whatsapp-float svg{width:32px;height:32px;fill:#fff}
.whatsapp-float .pulse{
  position:absolute;inset:-4px;border-radius:50%;
  border:2px solid #25D366;animation:wa-pulse 2s infinite;
}
@keyframes wa-pulse{0%{transform:scale(1);opacity:1}100%{transform:scale(1.4);opacity:0}}
@media(max-width:640px){
  .whatsapp-float{bottom:16px;right:16px;width:52px;height:52px}
  .whatsapp-float svg{width:28px;height:28px}
}

/* ── Product Page Shared Styles ── */
.product-section{padding:40px 24px 100px;max-width:var(--max-width);margin:0 auto}
.product-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
@media(max-width:768px){.product-grid{grid-template-columns:1fr}}
.product-title{font-size:clamp(28px,4vw,42px);font-weight:700;letter-spacing:-0.03em;line-height:1.15;margin-bottom:8px}
.product-sku{font-size:14px;color:var(--text-secondary);margin-bottom:20px}
.product-sku span{background:var(--bg-alt);padding:3px 10px;border-radius:6px;font-weight:600;color:var(--accent)}
.badges{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px}
.cta-btns{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:32px}

/* ── Specs Table ── */
.specs-table{
  width:100%;border-collapse:separate;border-spacing:0;
  border:1px solid var(--border);border-radius:var(--radius-sm);
  overflow:hidden;margin-top:24px;
}
.specs-table td{padding:12px 16px;font-size:14px;border-bottom:1px solid var(--border)}
.specs-table tr:last-child td{border-bottom:none}
.specs-table td:first-child{background:var(--bg-alt);font-weight:600;color:var(--text);width:35%}
.specs-table td:last-child{color:var(--text-secondary)}

/* ── Description & Feature List ── */
.desc-text{font-size:15px;color:var(--text-secondary);line-height:1.7;margin-bottom:16px}
.feature-list{list-style:none;display:flex;flex-direction:column;gap:10px}
.feature-list li{display:flex;gap:10px;font-size:14px;color:var(--text-secondary)}
.feature-list li::before{content:'✓';color:#34c759;font-weight:700;flex-shrink:0}

/* ── Related Products ── */
.related-section{padding:80px 24px;background:var(--bg-alt)}
.related-inner{max-width:var(--max-width);margin:0 auto}
.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px;margin-top:32px}
.related-card{
  background:var(--bg);border:1px solid var(--border);
  border-radius:var(--radius-md);padding:24px;
  text-decoration:none;color:inherit;transition:all 0.3s;display:block;
}
.related-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);border-color:#d0d0d5}
.related-model{font-size:20px;font-weight:700;color:var(--accent);margin-bottom:4px}
.related-name{font-size:14px;color:var(--text-secondary)}
.related-thumb{float:left;width:60px;height:60px;border-radius:8px;object-fit:cover;margin-right:16px}

/* ── Inquiry Form ── */
.inquiry-section{padding:80px 24px;max-width:var(--max-width);margin:0 auto}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:640px){.form-grid{grid-template-columns:1fr}}
.form-group{margin-bottom:14px}
.form-group label{display:block;font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:5px}
.form-group input,.form-group textarea,.form-group select{
  width:100%;padding:12px 16px;
  border:1px solid var(--border);border-radius:var(--radius-sm);
  font-size:15px;font-family:inherit;background:var(--bg);
  outline:none;transition:border-color 0.2s;
}
.form-group input:focus,.form-group textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(0,113,227,0.1)}
.form-group textarea{resize:vertical;min-height:100px}

/* ── Gallery & Lightbox ── */
.gallery-section{padding:0 24px 80px;max-width:var(--max-width);margin:0 auto}
.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media(max-width:768px){.gallery-grid{grid-template-columns:repeat(2,1fr)}}
.gallery-item{
  position:relative;border-radius:var(--radius-sm);overflow:hidden;
  cursor:pointer;aspect-ratio:4/3;background:var(--bg-alt);
  transition:transform 0.3s,box-shadow 0.3s;
}
.gallery-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.gallery-item img{width:100%;height:100%;object-fit:cover;display:block}
.lightbox{
  display:none;position:fixed;z-index:999;
  top:0;left:0;width:100%;height:100%;
  background:rgba(0,0,0,0.92);backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  justify-content:center;align-items:center;flex-direction:column;gap:16px;
}
.lightbox.active{display:flex}
.lightbox img{max-width:90vw;max-height:75vh;object-fit:contain;border-radius:8px}
.lightbox-close{
  position:absolute;top:24px;right:24px;
  width:40px;height:40px;border-radius:50%;
  background:rgba(255,255,255,0.15);border:none;color:#fff;
  font-size:20px;cursor:pointer;display:flex;
  align-items:center;justify-content:center;transition:background 0.2s;
}
.lightbox-close:hover{background:rgba(255,255,255,0.25)}
.lightbox-nav{
  background:rgba(255,255,255,0.12);border:none;color:#fff;
  width:44px;height:44px;border-radius:50%;font-size:18px;
  cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:background 0.2s;
}
.lightbox-nav:hover{background:rgba(255,255,255,0.22)}
.lightbox-nav:disabled{opacity:0.3;cursor:default}
.lightbox-counter{color:rgba(255,255,255,0.6);font-size:14px;font-weight:500}

/* ── Recently Viewed ── */
.recently-viewed{padding:96px 24px 100px;max-width:var(--max-width);margin:0 auto}
.recently-viewed.hidden{display:none}
.rv-grid{
  display:flex;gap:14px;overflow-x:auto;
  padding:12px 0 0;scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
}
.rv-grid::-webkit-scrollbar{height:4px}
.rv-grid::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}
.rv-card{
  flex:0 0 220px;background:var(--bg);border:1px solid var(--border);
  border-radius:var(--radius-md);padding:16px;
  text-decoration:none;color:inherit;transition:all 0.25s;scroll-snap-align:start;
}
.rv-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.rv-card img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:8px;margin-bottom:10px;background:var(--bg-alt)}
.rv-card-name{font-size:13px;font-weight:600;line-height:1.3}
@media(max-width:640px){.rv-card{flex:0 0 160px}}