/* ========== Modern Retail CSS (Readable) ========== */

/* 0) 字體 & 主題色 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;800&family=Poppins:wght@500;700&display=swap');

:root{
  --bg:#0b0c10; --card:#0f1117; --surface:#121826;
  --text:#e6e8ee; --muted:#9aa4b2; --line:rgba(255,255,255,.08);
  --brand:#6ee7ff; --brand-2:#7c3aed; --brand-3:#22d3ee; --accent:#f472b6;
  --shadow:0 10px 30px rgba(10,12,28,.25); --radius:18px; --ring:0 0 0 8px rgba(124,58,237,.15);
}
:root:not([data-theme="dark"]){
  --bg:#f6f7fb; --card:#ffffff; --surface:#ffffff;
  --text:#0b1220; --muted:#526079; --line:rgba(16,24,40,.08);
  --shadow:0 10px 30px rgba(15,17,23,.06);
}

/* 1) 基礎 Reset */
*{box-sizing:border-box} html,body{margin:0;padding:0}
body{
  font:14.5px/1.6 Inter,system-ui,-apple-system,Segoe UI,Roboto,Noto Sans,Arial;
  color:var(--text);
  background:
    radial-gradient(60% 30% at 10% 10%,rgba(124,58,237,.10),transparent 60%),
    radial-gradient(40% 25% at 90% 0%,rgba(34,211,238,.08),transparent 60%),
    radial-gradient(50% 40% at 50% 100%,rgba(244,114,182,.08),transparent 60%),
    var(--bg);
}
a{color:inherit;text-decoration:none} img{max-width:100%;display:block}
.container{max-width:1180px;margin:0 auto;padding:20px}

/* 2) Header / Nav */
.header{
  position:sticky;top:0;z-index:80;backdrop-filter:blur(10px);
  background:linear-gradient(180deg,rgba(15,17,23,.75),rgba(15,17,23,.55) 60%,transparent);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px 20px}
.nav .brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:.3px}
.nav .brand .logo{
  width:30px;height:30px;border-radius:10px;
  background:conic-gradient(from 180deg,var(--brand),var(--accent),var(--brand-2),var(--brand));
  box-shadow:0 6px 16px rgba(124,58,237,.35)
}
.nav ul{list-style:none;display:flex;gap:8px;margin:0;padding:0;align-items:center}
.nav a{padding:9px 12px;border-radius:12px;transition:.25s}
.nav a:hover{background:rgba(124,58,237,.14);box-shadow:0 6px 18px rgba(124,58,237,.18)}
.nav .right{display:flex;gap:8px;align-items:center;position:relative;z-index:110}

/* 3) Dropdown（穩定） */
.nav .dropdown{position:relative}
.nav .dropdown>a{display:inline-flex;align-items:center}
.nav .dropdown>a::after{content:"▾";font-size:10px;margin-left:6px;opacity:.6}
.nav .dropdown::after{content:"";position:absolute;left:0;right:0;top:100%;height:12px}
.nav .dropdown-menu{
  position:absolute;left:0;top:calc(100% + 8px);min-width:200px;
  background:linear-gradient(180deg,var(--card),var(--surface));
  border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:8px;
  transform:translateY(6px) scale(.98);opacity:0;visibility:hidden;pointer-events:none;transition:.16s ease;z-index:100
}
.nav .dropdown-menu a{display:block;padding:10px 12px;border-radius:10px;color:var(--muted)}
.nav .dropdown-menu a:hover{background:rgba(124,58,237,.12);color:var(--text)}
.nav .dropdown:hover>.dropdown-menu,
.nav .dropdown.open>.dropdown-menu,
.nav .dropdown:focus-within>.dropdown-menu{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0) scale(1)}

/* 4) Buttons / Badges / IconBtn */
.btn{
  border:1px solid var(--line);
  background:linear-gradient(180deg,var(--surface),color-mix(in oklab,var(--surface),#fff 4%));
  padding:9px 12px;border-radius:14px;cursor:pointer;transition:transform .15s,box-shadow .15s
}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(0,0,0,.16)}
.btn-icon{
  display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;padding:0;
  border:1px solid var(--line);border-radius:12px;background:linear-gradient(180deg,var(--surface),color-mix(in oklab,var(--surface),#fff 4%))
}
.btn-icon:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(0,0,0,.16)}
.btn-icon svg{width:18px;height:18px;display:block}
.btn-icon *{pointer-events:none} /* 點 SVG 也算按鈕 */
.badge{
  display:inline-flex;gap:6px;align-items:center;
  background:linear-gradient(180deg,rgba(124,58,237,.18),rgba(124,58,237,.08));
  padding:4px 10px;border-radius:999px;border:1px solid var(--line);font-size:12px;color:var(--text)
}

/* 5) Hero / KV */
.hero{padding:38px 0}
.hero h1{
  font:800 clamp(26px,4vw,38px)/1.2 Poppins,Inter,system-ui;margin:0 0 12px;
  background:linear-gradient(90deg,var(--brand-2),var(--brand-3),var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent
}
.hero p{color:var(--muted);margin:0;font-size:15px}
.hero .chips{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}
.kv{display:grid;grid-template-columns:1.12fr .88fr;gap:24px}
.kv .illus{
  position:relative;isolation:isolate;border-radius:var(--radius);
  background:radial-gradient(80% 60% at 30% 20%,rgba(110,231,255,.15),transparent 70%),
             radial-gradient(90% 70% at 80% 90%,rgba(124,58,237,.18),transparent 70%),
             linear-gradient(180deg,var(--card),var(--surface));
  border:1px solid var(--line);box-shadow:var(--shadow);min-height:260px;overflow:hidden
}

/* 6) Cards / Grid */
.grid{display:grid;gap:18px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.card{
  background:linear-gradient(180deg,var(--card),var(--surface));
  border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);overflow:hidden;
  transform:translateZ(0);will-change:transform
}
.card img{width:100%;height:220px;object-fit:cover;background:#111}
.card .p{padding:14px}
.card h4{font:600 16px/1.35 Inter;margin:8px 0}
.card:hover{transform:translateY(-4px)}

/* 7) Filters / Inputs */
.filters{display:flex;flex-wrap:wrap;gap:10px;margin:10px 0 18px}
.select,input[type="search"]{
  padding:10px 12px;border:1px solid var(--line);border-radius:14px;
  background:linear-gradient(180deg,var(--surface),color-mix(in oklab,var(--surface),#fff 4%));
  color:var(--text);outline:none;transition:border-color .2s,box-shadow .2s
}
.select:focus,input[type="search"]:focus{border-color:color-mix(in oklab,var(--brand-2),#fff 20%);box-shadow:var(--ring)}

/* 8) Table / Footer */
.table{width:100%;border-collapse:separate;border-spacing:0 10px}
.table th{color:var(--muted);font-weight:600}
.table th,.table td{
  padding:12px 14px;background:linear-gradient(180deg,var(--card),var(--surface));
  border-top:1px solid var(--line);border-bottom:1px solid var(--line)
}
.table tr td:first-child,.table tr th:first-child{border-left:1px solid var(--line);border-top-left-radius:12px;border-bottom-left-radius:12px}
.table tr td:last-child,.table tr th:last-child{border-right:1px solid var(--line);border-top-right-radius:12px;border-bottom-right-radius:12px}
.footer{margin-top:42px;border-top:1px solid var(--line);padding:28px;color:var(--muted)}

/* 9) Mobile */
.hamburger{display:none}
@media(max-width:1100px){.container{padding:16px}}
@media(max-width:980px){
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .kv{grid-template-columns:1fr}
  .nav ul.main{display:none}
  .hamburger{display:inline-flex}
}

/* 10) Drawer + Overlay */
.mobile-drawer{
  position:fixed;inset:0 0 0 auto;width:80%;max-width:340px;
  background:linear-gradient(180deg,var(--card),var(--surface));
  border-left:1px solid var(--line);transform:translateX(100%);transition:transform .25s ease;
  z-index:90;padding:20px
}
.mobile-drawer.open{transform:translateX(0)}
.mobile-drawer a{display:block;padding:12px 0;border-bottom:1px solid var(--line)}
.site-overlay{position:fixed;inset:0;background:rgba(6,8,20,.45);opacity:0;pointer-events:none;transition:.2s;z-index:85;backdrop-filter:blur(2px)}
.site-overlay.show{opacity:1;pointer-events:auto}

/* 11) Ripple / Reveal（想停用：刪掉 JS init） */
.btn .ripple{
  position:absolute;inset:auto;transform:translate(-50%,-50%);width:10px;height:10px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.7),transparent 60%);pointer-events:none;
  animation:ripple .6s ease-out forwards
}
.reveal{opacity:0;transform:translateY(12px) scale(.98);transition:opacity .5s,transform .5s}
.reveal.in{opacity:1;transform:none}

/* 12) Scrollbar（可刪） */
*::-webkit-scrollbar{height:12px;width:12px}
*::-webkit-scrollbar-thumb{
  background:linear-gradient(180deg,rgba(124,58,237,.6),rgba(34,211,238,.6));
  border:3px solid transparent;border-radius:999px;background-clip:padding-box
}

/* 13) Animations */
@keyframes ripple{to{opacity:0;transform:translate(-50%,-50%) scale(12)}}