/* ==========================================================================
   M-GATE — design tokens (marketplace / light theme)
   ========================================================================== */
:root{
  --bg: #eef1f4;
  --surface: #ffffff;
  --surface-2: #f6f7f9;
  --border: #e2e5ea;
  --text: #16181d;
  --text-dim: #565d6b;
  --text-faint: #8a909c;

  --accent: #2563eb;
  --accent-ink: #ffffff;
  --accent-soft: rgba(37,99,235,.10);
  --price-color: #c7511f;

  --radius-s: 8px;
  --radius-m: 12px;
  --radius-l: 18px;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --shadow-1: 0 1px 3px rgba(20,22,30,.08), 0 1px 2px rgba(20,22,30,.06);
  --shadow-2: 0 20px 50px rgba(20,22,30,.22);
}

body[data-store="COMPUMAX"]  { --accent:#d7373f; --accent-soft: rgba(215,55,63,.10);  --price-color:#c7373f; }
body[data-store="TECNOWORLD"]{ --accent:#1f9254; --accent-soft: rgba(31,146,84,.10);  --price-color:#1f9254; }
body[data-store="DIGITALIA"] { --accent:#2563eb; --accent-soft: rgba(37,99,235,.10);  --price-color:#1c54cf; }
body[data-store="TECNOPLAZA"]{ --accent:#c98a02; --accent-soft: rgba(201,138,2,.14);  --price-color:#a8720a; }

*{ box-sizing:border-box; }
html,body{ margin:0; padding:0; }
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
}
h1,h2,h3{ font-family:var(--font-display); margin:0; }
button{ font-family:inherit; cursor:pointer; }
select{ font-family:inherit; }
:focus-visible{ outline:2px solid var(--accent); outline-offset:2px; }

/* Topbar */
.topbar{
  display:flex; align-items:center; gap:20px; flex-wrap:wrap;
  padding:14px 24px; border-bottom:1px solid var(--border);
  position:sticky; top:0; z-index:40;
  background:var(--surface); box-shadow:var(--shadow-1);
}
.topbar__brand{ display:flex; flex-direction:column; margin-right:auto; }
.topbar__logo{ font-family:var(--font-display); font-weight:700; font-size:22px; letter-spacing:.5px; color:var(--text); }
.topbar__logo-dot{ color:var(--accent); transition:color .25s; }
.topbar__tag{ font-size:11px; color:var(--text-faint); text-transform:uppercase; letter-spacing:.08em; }

.store-switch{ display:flex; gap:8px; flex-wrap:wrap; }
.store-tab{
  display:flex; align-items:center; gap:8px;
  background:var(--surface-2); border:1px solid var(--border); color:var(--text-dim);
  padding:9px 14px; border-radius:999px; font-size:13px; font-weight:700; letter-spacing:.02em;
  transition:all .18s ease;
}
.store-tab__dot{ width:8px; height:8px; border-radius:50%; background:var(--tab-c); transition:box-shadow .18s; }
.store-tab:hover{ color:var(--text); border-color:var(--tab-c); }
.store-tab.is-active{ background:var(--tab-c); color:#fff; border-color:var(--tab-c); box-shadow:var(--shadow-1); }
.store-tab.is-active .store-tab__dot{ background:#fff; }

.cart-fab{
  position:relative; background:var(--accent); color:#fff; border:none;
  width:44px; height:44px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  box-shadow:var(--shadow-1); transition:transform .15s, background .25s;
}
.cart-fab:hover{ transform:translateY(-2px); }
.cart-fab__badge{
  position:absolute; top:-4px; right:-4px; background:var(--text); color:#fff;
  font-family:var(--font-mono); font-size:11px; font-weight:600;
  min-width:18px; height:18px; border-radius:999px;
  display:flex; align-items:center; justify-content:center; padding:0 4px;
  border:2px solid var(--surface);
}

/* Store banner */
.store-banner{
  text-align:center; padding:9px 16px; background:var(--accent-soft); color:var(--accent);
  font-size:13px; font-weight:700; letter-spacing:.03em; border-bottom:1px solid var(--border);
  transition:background .25s, color .25s;
}
.store-banner strong{ font-family:var(--font-mono); }

/* Layout */
.layout{ display:grid; grid-template-columns:260px 1fr; gap:0; max-width:1400px; margin:0 auto; align-items:start; }

.filters{ position:sticky; top:126px; padding:22px 18px; height:calc(100vh - 126px); overflow-y:auto; }
.filters__head{ display:flex; align-items:center; justify-content:space-between; margin-bottom:16px; }
.filters__head h2{ font-size:15px; }
.filters__reset{
  background:var(--surface); border:1px solid var(--border); color:var(--text-dim);
  font-size:11px; padding:5px 9px; border-radius:6px; transition:border-color .15s, color .15s;
}
.filters__reset:hover{ border-color:var(--accent); color:var(--accent); }

.filter-group{ margin-bottom:16px; display:flex; flex-direction:column; gap:6px; }
.filter-group label{ font-size:11px; text-transform:uppercase; letter-spacing:.07em; color:var(--text-faint); font-weight:700; }
.filter-group select{
  background:var(--surface); border:1px solid var(--border); color:var(--text);
  padding:9px 10px; border-radius:var(--radius-s); font-size:13px; appearance:none;
  background-image:url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238a909c' stroke-width='1.6' fill='none' fill-rule='evenodd'/%3E%3C/svg%3E");
  background-repeat:no-repeat; background-position:right 10px center;
}
.filter-group select:focus{ border-color:var(--accent); }
.filters__count{ font-size:11px; color:var(--text-faint); margin-top:10px; }

.catalog{ padding:22px 24px 60px; min-width:0; }
.catalog__grid{ display:grid; grid-template-columns:repeat(auto-fill, minmax(220px, 1fr)); gap:16px; }
.catalog__empty{ color:var(--text-faint); text-align:center; margin-top:60px; font-size:14px; }

.card{
  background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-m);
  overflow:hidden; cursor:pointer;
  transition:transform .15s ease, border-color .15s ease, box-shadow .15s ease;
  display:flex; flex-direction:column;
}
.card:hover{ transform:translateY(-3px); border-color:var(--accent); box-shadow:var(--shadow-1); }
.card__img-wrap{ aspect-ratio:4/3; width:100%; background:var(--surface-2); display:flex; align-items:center; justify-content:center; overflow:hidden; }
.card__img{ width:100%; height:100%; object-fit:cover; display:block; }
.card__body{ padding:12px 14px 14px; display:flex; flex-direction:column; gap:6px; flex:1; }
.card__brand{ font-size:11px; text-transform:uppercase; letter-spacing:.08em; color:var(--accent); font-weight:700; }
.card__title{ font-family:var(--font-display); font-size:16px; font-weight:700; line-height:1.25; color:var(--text); }
.card__price{ font-family:var(--font-mono); font-weight:700; font-size:19px; color:var(--price-color); margin-top:2px; }

.card__specs{ margin-top:auto; padding-top:10px; border-top:1px solid var(--border); display:grid; grid-template-columns:1fr 1fr; gap:6px 10px; }
.card__spec{ display:flex; flex-direction:column; gap:1px; }
.card__spec-label{ font-size:9.5px; text-transform:uppercase; letter-spacing:.06em; color:var(--text-faint); font-weight:700; }
.card__spec-value{ font-size:12px; color:var(--text-dim); font-weight:600; }

/* Modal */
.modal-backdrop{ position:fixed; inset:0; background:rgba(20,22,30,.5); display:none; align-items:center; justify-content:center; z-index:100; padding:20px; }
.modal-backdrop.is-open{ display:flex; }
.modal{
  background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-l);
  max-width:640px; width:100%; max-height:90vh; overflow-y:auto; position:relative;
  display:grid; grid-template-columns: 220px 1fr; box-shadow:var(--shadow-2);
}
.modal__close{
  position:absolute; top:12px; right:12px; z-index:2;
  background:rgba(255,255,255,.85); color:var(--text); border:1px solid var(--border);
  width:30px; height:30px; border-radius:50%; font-size:18px; line-height:1;
}
.modal__img{ background:var(--surface-2); background-size:cover; background-position:center; min-height:220px; }
.modal__body{ padding:24px; display:flex; flex-direction:column; gap:10px; }
.modal__brand{ font-size:11px; text-transform:uppercase; letter-spacing:.08em; color:var(--accent); font-weight:700; margin:0; }
.modal__title{ font-size:22px; }
.modal__specs{ display:grid; grid-template-columns:1fr 1fr; gap:10px 14px; margin-top:6px; }
.spec{ display:flex; flex-direction:column; gap:2px; background:var(--surface-2); border:1px solid var(--border); border-radius:var(--radius-s); padding:8px 10px; }
.spec__label{ font-size:10px; text-transform:uppercase; letter-spacing:.06em; color:var(--text-faint); font-weight:700; }
.spec__value{ font-family:var(--font-mono); font-size:13.5px; color:var(--text); }
.modal__price-row{ display:flex; align-items:center; justify-content:space-between; margin-top:10px; }
.modal__price{ font-family:var(--font-mono); font-size:26px; font-weight:700; color:var(--price-color); }
.modal__store-pill{ font-size:11px; font-weight:700; letter-spacing:.04em; background:var(--accent-soft); color:var(--accent); padding:5px 10px; border-radius:999px; }

.btn{ border:none; border-radius:999px; padding:12px 18px; font-size:14px; font-weight:700; transition:filter .15s, transform .1s; }
.btn:active{ transform:scale(.98); }
.btn--add{ background:var(--accent); color:#fff; margin-top:8px; }
.btn--add:hover{ filter:brightness(1.08); }

/* Cart panel */
.cart-backdrop{ position:fixed; inset:0; background:rgba(20,22,30,.45); display:none; z-index:110; }
.cart-backdrop.is-open{ display:block; }
.cart-panel{
  position:fixed; top:0; right:0; height:100%; width:380px; max-width:92vw;
  background:var(--surface); border-left:1px solid var(--border);
  z-index:120; display:flex; flex-direction:column;
  transform:translateX(100%); transition:transform .25s ease; box-shadow:var(--shadow-2);
}
.cart-panel.is-open{ transform:translateX(0); }
.cart-panel__head{ display:flex; align-items:center; justify-content:space-between; padding:18px 20px; border-bottom:1px solid var(--border); }
.cart-panel__close{ background:none; border:none; color:var(--text-dim); font-size:22px; }
.cart-panel__items{ flex:1; overflow-y:auto; padding:12px 16px; display:flex; flex-direction:column; gap:10px; }
.cart-panel__empty{ text-align:center; color:var(--text-faint); font-size:13px; padding:0 24px; margin-top:20px; }

.cart-item{ display:grid; grid-template-columns:52px 1fr auto; gap:10px; background:var(--surface-2); border:1px solid var(--border); border-radius:var(--radius-s); padding:10px; }
.cart-item__img{ width:52px; height:52px; border-radius:8px; object-fit:cover; }
.cart-item__name{ font-size:13px; font-weight:700; line-height:1.2; color:var(--text); }
.cart-item__store{ font-size:10.5px; font-weight:700; letter-spacing:.03em; margin-top:2px; }
.cart-item__unit{ font-size:11px; color:var(--text-faint); font-family:var(--font-mono); margin-top:2px; }
.cart-item__qty{ display:flex; align-items:center; gap:6px; margin-top:6px; }
.qty-btn{ width:22px; height:22px; border-radius:6px; border:1px solid var(--border); background:var(--surface); color:var(--text); font-size:13px; line-height:1; display:flex; align-items:center; justify-content:center; }
.qty-val{ font-family:var(--font-mono); font-size:13px; min-width:16px; text-align:center; }
.cart-item__right{ display:flex; flex-direction:column; align-items:flex-end; justify-content:space-between; }
.cart-item__subtotal{ font-family:var(--font-mono); font-weight:700; font-size:13px; color:var(--text); }
.cart-item__remove{ background:none; border:none; color:var(--text-faint); font-size:11px; text-decoration:underline; padding:0; }
.cart-item__remove:hover{ color:#d7373f; }

.cart-panel__footer{ border-top:1px solid var(--border); padding:16px 20px 20px; }
.cart-panel__total-row{ display:flex; justify-content:space-between; align-items:baseline; margin-bottom:14px; }
.cart-panel__total-row span:first-child{ font-size:13px; color:var(--text-dim); font-weight:600; }
.cart-panel__total-row span:last-child{ font-family:var(--font-mono); font-size:22px; font-weight:700; color:var(--price-color); }
.cart-panel__actions{ display:flex; gap:10px; }
.btn--ghost{ background:var(--surface); border:1px solid var(--border); color:var(--text-dim); flex:1; }
.btn--ghost:hover{ border-color:#d7373f; color:#d7373f; }
.btn--pay{ background:var(--accent); color:#fff; flex:1.4; }
.btn--pay:hover{ filter:brightness(1.08); }
.btn--pay:disabled, .btn--ghost:disabled{ opacity:.4; cursor:not-allowed; }

/* Toast */
.toast{
  position:fixed; left:50%; bottom:24px; transform:translate(-50%, 20px);
  background:var(--text); color:#fff; padding:12px 18px; border-radius:999px; font-size:13px;
  opacity:0; pointer-events:none; transition:opacity .2s, transform .2s; z-index:200; box-shadow:var(--shadow-2);
  display:flex; align-items:center; gap:8px;
}
.toast.is-visible{ opacity:1; transform:translate(-50%, 0); }
.toast::before{ content:''; width:8px; height:8px; border-radius:50%; background:var(--accent); }

/* Responsive */
@media (max-width: 900px){
  .layout{ grid-template-columns:1fr; }
  .filters{ position:static; height:auto; padding:16px 18px; background:var(--surface); border-bottom:1px solid var(--border); }
  .filters__body{ display:grid; grid-template-columns:1fr 1fr; gap:0 12px; }
  .modal{ grid-template-columns:1fr; }
  .modal__img{ min-height:160px; }
}

@media (max-width: 560px){
  .topbar{ padding:12px 14px; gap:10px; }
  .topbar__brand{ margin-right:0; }
  .store-switch{ order:3; width:100%; overflow-x:auto; flex-wrap:nowrap; padding-bottom:2px; }
  .store-tab{ white-space:nowrap; }
  .catalog{ padding:16px 14px 50px; }
  .catalog__grid{ grid-template-columns:repeat(auto-fill, minmax(150px, 1fr)); gap:12px; }
  .card__title{ font-size:14px; }
  .card__price{ font-size:16px; }
  .cart-panel{ width:100%; max-width:100%; }
}