:root { --bg:#0c0c0c; --fg:#f6f6f6; --muted:#a0a0a0; --brand:#00ffc6; --card:#141414; --border:#242424; }
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,Helvetica,'Noto Sans TC',sans-serif;line-height:1.6}
a{color:var(--fg);text-decoration:none}
.skip-link{position:absolute;left:-999px;top:8px;background:var(--brand);color:#000;padding:10px 12px;border-radius:10px;font-weight:800;z-index:999}
.skip-link:focus{left:10px}
*:focus-visible{outline:2px solid rgba(0,255,198,.85);outline-offset:2px}
.wrap{max-width:1100px;margin:0 auto;padding:0 20px}
.wrap.narrow{max-width:760px}
.site-header{position:sticky;top:0;z-index:10;background:rgba(12,12,12,.8);backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--border)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;position:relative}

/* --- Top nav (desktop) --- */
.nav{display:flex;align-items:center;gap:0}
.nav-links{display:flex;align-items:center}
.nav a{margin-left:18px}
.nav .btn{margin-left:24px}
/* --- Nav hover / pop-out interaction --- */
.nav-links{gap:6px}
.nav a{margin-left:0} /* handled by gap/padding */
.nav-item{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:10px 12px;
  border-radius:12px;
  position:relative;
  transition:transform .16s ease, box-shadow .16s ease, background .16s ease, filter .16s ease;
  will-change:transform;
}
.nav-item:hover,
.nav-item:focus-visible{
  transform:translateY(-4px);
  box-shadow:0 12px 28px rgba(0,0,0,.28);
  background:rgba(255,255,255,.06);
  filter:saturate(1.05);
  outline:none;
}
.nav-item:active{transform:translateY(-2px) scale(.99)}
/* Disable pop-out animation for utility links (Contact/Admin/Cart/Account/Login/Logout) */
.nav-item.no-pop{
  will-change:auto;
}
.nav-item.no-pop:hover,
.nav-item.no-pop:focus-visible{
  transform:none;
  box-shadow:none;
  filter:none;
  /* keep a subtle hover background without "popping" */
  background:rgba(255,255,255,.04);
}
.nav-item.no-pop:active{transform:none}

/* Fix: "聯絡我們" uses .btn (brand background + dark text). The generic no-pop hover
   background above would overwrite the brand background and make the text look like it
   disappears (black on dark header). Keep the brand styling on hover/focus for btn items. */
.nav-item.btn.no-pop:hover,
.nav-item.btn.no-pop:focus-visible{
  background:var(--brand);
  color:#000;
}

.nav-item.is-active{
  background:rgba(255,255,255,.10);
  box-shadow:inset 0 0 0 1px var(--border), 0 10px 22px rgba(0,0,0,.22);
}
@media (prefers-reduced-motion: reduce){
  .nav-item{transition:none}
  .nav-item:hover,.nav-item:focus-visible,.nav-item:active{transform:none}
}

/* --- Hamburger (mobile) --- */
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  flex-direction:column; /* stack bars vertically (fix: prevent looking like a single '-') */
  width:44px;
  height:44px;
  border-radius:10px;
  border:1px solid var(--border);
  background:transparent;
  color:var(--fg);
  cursor:pointer;
}
.nav-toggle-bar{
  display:block;
  width:20px;
  height:2px;
  background:var(--fg);
  border-radius:2px;
  margin:3px 0;
  transition:transform .16s ease, opacity .16s ease;
}
.btn{display:inline-block;padding:10px 16px;border-radius:8px;background:var(--brand);color:#000;font-weight:700;cursor:pointer;border:none}
.btn.ghost{background:transparent;border:1px solid var(--brand);color:var(--fg)}
.hero{padding:56px 0 40px;background:linear-gradient(180deg, rgba(0,255,198,.12), rgba(0,0,0,0));border-bottom:1px solid var(--border)}
.hero h1{font-size:40px;margin:0 0 10px}
.hero p{color:var(--muted);margin:0 0 16px}
.why summary{cursor:pointer;display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:12px;border:1px solid var(--border);background:rgba(255,255,255,.03);font-weight:800}
.why summary::-webkit-details-marker{display:none}
.why[open] summary{background:rgba(0,255,198,.10);border-color:rgba(0,255,198,.35)}
.grid h2{margin-top:32px}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;margin:16px 0 40px}
.card{background:var(--card);border:1px solid var(--border);border-radius:12px;overflow:hidden;display:flex;flex-direction:column;transition:transform .12s ease, box-shadow .12s}
.card:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.35)}
.card img{width:100%;aspect-ratio:1.2 / 1;object-fit:cover}
.card-body{padding:12px}
.card h3{margin:0 0 6px;font-size:18px}
.muted{color:var(--muted);font-size:14px}
.pill{display:inline-block;padding:2px 8px;border:1px solid var(--border);border-radius:999px;font-size:12px;color:var(--muted)}
.price{margin-top:8px;font-weight:700}
.price.large{font-size:24px}
.usp{padding:24px 0;border-top:1px solid var(--border)}
.usp-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.product{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.product .product-gallery .hero{width:100%;border:1px solid var(--border);border-radius:12px;background:#000}
.product .product-info h1{margin-top:0}
.specs ul{padding-left:18px;margin:0}


.filters{margin:12px 0}
input,textarea,select{width:100%;padding:10px;border-radius:8px;border:1px solid var(--border);background:#0f0f0f;color:var(--fg)}
label{display:block;margin:12px 0}
.form .btn{margin-top:6px}
.notice{padding:12px;border-radius:8px;margin:12px 0;background:#121212;border:1px solid var(--border)}
.notice.success{background:#0e2b1f;color:#a0ffcf;border:1px solid #164a32}
.notice.error{background:#2b0e0e;color:#ffb0b0;border:1px solid #4a1616}
.admin-top{display:flex;justify-content:space-between;align-items:center}
.admin-nav a,.admin-nav button{margin-right:10px}
table th, table td{border-bottom:1px solid var(--border)}
@media (max-width: 860px){
  .product{grid-template-columns:1fr}

  /* Mobile nav becomes hamburger */
  .nav-toggle{display:inline-flex}
  .nav-links{
    display:none !important;
    position:absolute;
    top:64px;
    left:20px;
    right:20px;
    flex-direction:column;
    align-items:stretch;
    padding:12px;
    background:rgba(12,12,12,.98);
    border:1px solid var(--border);
    border-radius:14px;
    box-shadow:0 18px 40px rgba(0,0,0,.55);
  }
  .nav.is-open .nav-links{display:flex !important}
  .nav-links a{margin-left:0;padding:10px 12px;border-radius:10px}
  .nav-links a + a{margin-top:6px}
  .nav-links .btn{margin-left:0;text-align:center}

  /* Animate hamburger -> X */
  .nav.is-open .nav-toggle-bar:nth-child(1){transform:translateY(5px) rotate(45deg)}
  .nav.is-open .nav-toggle-bar:nth-child(2){opacity:0}
  .nav.is-open .nav-toggle-bar:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
}

@media (max-width:720px){
  .site-footer .wrap{flex-direction:column;align-items:center;text-align:center}
  .site-footer .footer-links{justify-content:center}
}

/* Hard guard: desktop should never show hamburger button */
@media (min-width: 861px){
  .nav-toggle{display:none !important}
  .nav-links{display:flex !important; position:static !important}
}



/* === Footer layout fix v2 === */
.site-footer{border-top:1px solid var(--border);padding:32px 0;color:var(--muted);}
.site-footer .wrap{display:flex;flex-direction:row;align-items:flex-start;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.site-footer .wrap > div{flex:1;min-width:240px}
.site-footer .footer-links{display:flex;gap:20px;flex-wrap:wrap;justify-content:flex-end}
.site-footer .footer-links a{color:var(--muted)}
@media (max-width:720px){
  .site-footer .wrap{flex-direction:column;align-items:center;text-align:center}
  .site-footer .wrap > div{flex:none}
  .site-footer .footer-links{justify-content:center}
}



/* --- Center footer content --- */
.site-footer .wrap{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  text-align:center;
  gap:8px;
}
.footer-links{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:16px;
}
.footer-links a{ margin-left:0 }



/* Forms & alerts for 會員／購物車 */
.form.card-like{
  max-width:480px;
  margin:16px 0 40px;
  padding:16px 20px;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:12px;
}
.field{
  margin-bottom:12px;
  display:flex;
  flex-direction:column;
  gap:4px;
}
.field label{
  font-size:14px;
  color:var(--muted);
}
.field input,
.field textarea{
  padding:8px 10px;
  border-radius:6px;
  border:1px solid var(--border);
  background:#050505;
  color:var(--fg);
}
.alert{
  padding:10px 12px;
  border-radius:8px;
  margin:12px 0;
  font-size:14px;
}
.alert.error{
  border:1px solid #f44336;
  background:rgba(244,67,54,.12);
}
.alert.success{
  border:1px solid #4caf50;
  background:rgba(76,175,80,.12);
}
table.cart{
  width:100%;
  border-collapse:collapse;
  margin:12px 0 24px;
  font-size:14px;
}
table.cart th,
table.cart td{
  border-bottom:1px solid var(--border);
  padding:8px 6px;
  text-align:left;
}
table.cart th{
  text-align:left;
  font-weight:600;
  color:var(--muted);
}
table.cart tfoot td{
  font-weight:700;
}

/* Responsive cart table -> cards on mobile */
@media (max-width:720px){
  table.cart thead{display:none}
  table.cart, table.cart tbody, table.cart tr, table.cart td{display:block;width:100%}
  table.cart tr{border:1px solid var(--border);border-radius:12px;margin:10px 0;padding:10px 12px;background:var(--card)}
  table.cart td{border-bottom:none;padding:6px 0}
  table.cart td[data-label]:before{content:attr(data-label) "：";display:inline-block;color:var(--muted);min-width:4.5em}
  .cart-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:6px}
  .cart-line-total{font-weight:800}
}

/* Stock badge */
.badge{display:inline-flex;align-items:center;gap:6px;padding:2px 10px;border-radius:999px;border:1px solid var(--border);font-size:12px;color:var(--muted)}
.badge.ok{border-color:rgba(0,255,198,.45);background:rgba(0,255,198,.10);color:var(--fg)}
.badge.no{border-color:rgba(244,67,54,.45);background:rgba(244,67,54,.10);color:var(--fg)}

/* Back to top button */
.back-to-top{position:fixed;right:16px;bottom:16px;width:44px;height:44px;border-radius:999px;border:1px solid var(--border);background:rgba(20,20,20,.85);backdrop-filter:blur(8px);color:var(--fg);display:none;align-items:center;justify-content:center;cursor:pointer;z-index:50}
.back-to-top.is-show{display:flex}
.back-to-top span{font-size:18px;line-height:1}


/* === Checkout polish: tooltip & shipping badge === */
.ship-method{display:inline-flex;align-items:center;gap:10px;flex-wrap:wrap}
.ship-badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 10px;
  border-radius:999px;
  border:1px solid rgba(0,255,198,.45);
  background:rgba(0,255,198,.10);
  font-size:12px;
  line-height:1;
  letter-spacing:.2px;
}
.ship-badge-mark{font-weight:800;color:var(--brand)}
.ship-badge-text{font-weight:700;color:var(--fg);opacity:.92}

.tooltip{position:relative;display:inline-flex;align-items:center;outline:none}
.tooltip-trigger{
  display:inline-flex;
  width:18px;
  height:18px;
  align-items:center;
  justify-content:center;
  border-radius:999px;
  border:1px solid var(--border);
  background:rgba(255,255,255,.02);
  color:var(--muted);
  font-size:12px;
  font-weight:800;
  cursor:help;
}
.tooltip-bubble{
  position:absolute;
  right:0;
  top:calc(100% + 10px);
  min-width:240px;
  max-width:360px;
  padding:10px 12px;
  border-radius:12px;
  border:1px solid var(--border);
  background:rgba(20,20,20,.98);
  box-shadow:0 18px 40px rgba(0,0,0,.55);
  color:var(--fg);
  font-size:13px;
  line-height:1.5;
  opacity:0;
  transform:translateY(-4px);
  pointer-events:none;
  transition:opacity .16s ease, transform .16s ease;
  z-index:20;
}
.tooltip-bubble:before{
  content:"";
  position:absolute;
  right:12px;
  top:-6px;
  width:10px;
  height:10px;
  background:rgba(20,20,20,.98);
  border-left:1px solid var(--border);
  border-top:1px solid var(--border);
  transform:rotate(45deg);
}
.tooltip:hover .tooltip-bubble,
.tooltip:focus-within .tooltip-bubble{
  opacity:1;
  transform:translateY(0);
  pointer-events:auto;
}

@media (max-width: 520px){
  .tooltip-bubble{right:auto;left:0;min-width:220px}
  .tooltip-bubble:before{right:auto;left:12px}
}



/* 為什麼選擇 NEX 次元線 區塊 */
.why-nexline{
  padding:40px 0;
  border-top:1px solid var(--border);
}
.why-nexline h2{
  margin:0 0 16px;
}
.why-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
  gap:16px;
  margin-top:8px;
}
.why-item{
  background:var(--card);
  border-radius:12px;
  padding:16px;
  border:1px solid var(--border);
}
.why-item h3{
  margin:0 0 8px;
  font-size:18px;
}
.why-item p{
  margin:0;
  color:var(--muted);
}
.brand-mission{
  margin-top:24px;
  text-align:center;
  font-weight:500;
}


/* -------- Filament guide page -------- */
.filament-guide {
  padding:32px 0 64px;
  position:relative;
  overflow:hidden;
}
.filament-guide::before,
.filament-guide::after {
  content:"";
  position:absolute;
  inset:-120px;
  background:
    radial-gradient(circle at 0% 0%, rgba(0,255,198,0.16), transparent 55%),
    radial-gradient(circle at 100% 100%, rgba(0,140,255,0.18), transparent 55%);
  opacity:0.7;
  pointer-events:none;
  z-index:-1;
}
.filament-guide h1 {
  margin-bottom:8px;
  letter-spacing:0.08em;
}
.filament-guide .highlight {
  color: var(--brand);
  font-weight:700;
}
.filament-chip-row {
  margin:16px 0 8px;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  align-items:center;
}
.filament-chip-row .pill {
  margin-left:0;
  padding:6px 10px;
  border-radius:999px;
  border:1px solid rgba(0,255,198,0.3);
  font-size:13px;
  background:rgba(0,0,0,0.6);
  box-shadow:0 0 0 1px rgba(0,0,0,0.6);
  transition:background .2s, transform .2s, box-shadow .2s, border-color .2s;
}
.filament-chip-row .pill:hover {
  transform:translateY(-1px);
  background:rgba(0,255,198,0.12);
  border-color:var(--brand);
  box-shadow:0 0 16px rgba(0,255,198,0.35);
}
.filament-note {
  font-size:13px;
  color:var(--muted);
  margin-bottom:24px;
}
.filament-note code {
  font-family:Menlo,Consolas,monospace;
  padding:2px 6px;
  border-radius:6px;
  background:rgba(255,255,255,0.03);
  border:1px solid var(--border);
}
.filament-section {
  margin-top:24px;
  padding:18px 18px 20px;
  background:
    linear-gradient(135deg, rgba(0,255,198,0.06), rgba(0,0,0,0.96));
  border-radius:12px;
  border:1px solid rgba(255,255,255,0.05);
  box-shadow:
    0 0 0 1px rgba(0,0,0,0.9),
    0 18px 35px rgba(0,0,0,0.7);
  position:relative;
  overflow:hidden;
}
.filament-section::before {
  content:"";
  position:absolute;
  inset:-1px;
  border-radius:inherit;
  border:1px solid rgba(0,255,198,0.22);
  opacity:0;
  pointer-events:none;
  transform:scale(0.98);
  transition:opacity .25s ease-out, transform .25s ease-out;
}
.filament-section:hover::before {
  opacity:1;
  transform:scale(1);
}
.filament-section h2 {
  margin-top:0;
  margin-bottom:4px;
}
.filament-section p {
  margin:4px 0 10px;
}
.filament-section .usage-label {
  font-size:11px;
  letter-spacing:0.16em;
  text-transform:uppercase;
  color:var(--muted);
  opacity:0.85;
  margin-top:4px;
}
.filament-usage {
  margin:6px 0 0 20px;
  padding:0;
  font-size:14px;
}
.filament-usage li {
  margin-bottom:4px;
}
.filament-table {
  width:100%;
  border-collapse:collapse;
  margin-top:6px;
  font-size:14px;
}
.filament-table td {
  padding:8px 10px;
  border:1px solid var(--border);
  vertical-align:top;
}
.filament-table thead th {
  background:#181818;
  font-weight:600;
  border:1px solid var(--border);
}
.filament-tips {
  margin:8px 0 0 20px;
  padding:0;
  font-size:14px;
}
.filament-tips li {
  margin-bottom:6px;
}
@media (max-width: 600px) {
  .filament-table th,
  .filament-table td {
    font-size:13px;
    padding:6px 8px;
  }
}

/* =============================
   Side Cart Drawer (like shop.php)
   ============================= */

.cart-btn{
  position:relative;
  overflow:hidden;
  background:linear-gradient(135deg,#ff5a5f,#c81d25);
  border:1px solid rgba(255,255,255,.22);
  box-shadow:0 6px 16px rgba(200,29,37,.38),0 1px 0 rgba(255,255,255,.15) inset;
  font-weight:700;
}

.cart-btn:hover,.cart-btn:focus-visible{
  background:linear-gradient(135deg,#ff7a7e,#a3121a);
  transform:translateY(-1px);
  box-shadow:0 10px 26px rgba(200,29,37,.55),0 1px 0 rgba(255,255,255,.25) inset;
}

.cart-drawer{
  position:fixed;
  inset:0;
  z-index:9999;
  display:none;
}
.cart-drawer.is-open{display:block;}

html.no-scroll, body.no-scroll{overflow:hidden;}

.cart-drawer__backdrop{
  position:absolute;
  inset:0;
  background:rgba(0,0,0,.45);
  z-index:1;
}

.cart-drawer__panel{
  position:absolute;
  top:64px; /* header height */
  right:0;
  width:360px;
  max-width:92vw;
  height:calc(100% - 64px);
  background:rgba(12,12,12,.92);
  backdrop-filter:saturate(140%) blur(10px);
  border-left:1px solid var(--border);
  box-shadow:-12px 0 28px rgba(0,0,0,.35);
  transform:translateX(100%);
  transition:transform .25s ease;
  display:flex;
  flex-direction:column;
  z-index:2;
}
.cart-drawer.is-open .cart-drawer__panel{transform:translateX(0);}

.cart-drawer__header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:14px 16px;
  border-bottom:1px solid var(--border);
}
.cart-drawer__title{font-weight:700;}
.cart-drawer__close{
  background:none;
  border:0;
  color:var(--text);
  font-size:28px;
  line-height:1;
  cursor:pointer;
  padding:4px 8px;
  border-radius:10px;
}
.cart-drawer__close:hover{background:rgba(255,255,255,.08);}

.cart-drawer__body{
  flex:1;
  overflow:auto;
  padding:10px 16px;
}

.cart-drawer__item{
  display:flex;
  gap:10px;
  justify-content:space-between;
  padding:10px 0;
  border-bottom:1px dashed rgba(255,255,255,.12);
}
.cart-drawer__item-name{font-weight:600;}
.cart-drawer__item-meta{font-size:13px;opacity:.85;margin-top:2px}
.cart-drawer__item-right{text-align:right;min-width:110px}
.cart-drawer__qty{
  width:86px;
  padding:6px 8px;
  border-radius:10px;
  border:1px solid var(--border);
  background:#111;
  color:var(--text);
}
.cart-drawer__remove{
  background:none;
  border:0;
  color:var(--text);
  cursor:pointer;
  opacity:.85;
  padding:6px 8px;
  border-radius:10px;
}
.cart-drawer__remove:hover{background:rgba(255,255,255,.08);opacity:1}

.cart-drawer__footer{
  padding:14px 16px;
  border-top:1px solid var(--border);
}
.cart-drawer__total{display:flex;justify-content:space-between;font-weight:700;margin-bottom:10px}
.cart-drawer__actions{display:flex;flex-direction:column;gap:10px}

@media (max-width: 520px){
  .cart-drawer__panel{top:64px;width:92vw;}
}



/* Navbar cart link should match other nav items (no red button).
   Only the count badge is highlighted. */
.cart-link{ position:relative; }
.cart-link .cart-count{
  display:inline;
  margin-left:6px;
  font-size:inherit;
  padding:0;
  border-radius:0;
  background:transparent;
  color:inherit;
  line-height:1;
  vertical-align:middle;
}

/* --- Toast notifications (non-blocking) --- */
#toast-container{
  position:fixed;
  top:76px;
  right:16px;
  z-index:9999;
  display:flex;
  flex-direction:column;
  gap:10px;
  max-width:min(360px, calc(100vw - 32px));
  pointer-events:none;
}
.toast{
  background:var(--card);
  border:1px solid var(--border);
  color:var(--fg);
  padding:12px 14px;
  border-radius:14px;
  box-shadow:0 18px 45px rgba(0,0,0,.35);
  opacity:0;
  transform:translateY(-6px);
  transition:opacity .2s ease, transform .2s ease;
}
.toast.is-show{
  opacity:1;
  transform:translateY(0);
}