/* =====================================================================
   MOBILE MARKET STOREFRONT
   Design language: built on the shop's own brand colors (set in Admin
   Settings), so the public site and the staff app feel like one brand.
   Signature move: everything drives toward one action — chat on
   WhatsApp — so the cart is styled like a message thread, not a
   generic checkout, and the floating cart bubble has a soft
   "someone's there" pulse rather than a static badge.
   ===================================================================== */

:root {
  --sf-primary: var(--brand-primary, #1D5FA3);
  --sf-primary-dark: var(--brand-primary-dark, #164A80);
  --sf-secondary: var(--brand-secondary, #3CB043);
  --sf-accent: var(--brand-accent, #F5A623);
  --sf-ink: #16202E;
  --sf-ink-soft: #5B6779;
  --sf-bg: #FAFBFD;
  --sf-surface: #FFFFFF;
  --sf-border: #E7ECF3;
  --sf-radius: 18px;
  --sf-radius-sm: 12px;
  --sf-shadow: 0 2px 10px rgba(20, 32, 46, .06);
  --sf-shadow-lg: 0 20px 50px rgba(20, 32, 46, .14);
  --sf-whatsapp: #25D366;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
  margin: 0; background: var(--sf-bg); color: var(--sf-ink);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 15px; line-height: 1.55; -webkit-font-smoothing: antialiased;
  overflow-x: hidden; max-width: 100vw;
}
h1, h2, h3, h4 {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  margin: 0 0 8px; font-weight: 700; letter-spacing: -0.01em; color: var(--sf-ink);
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

.sf-container { max-width: 1180px; margin: 0 auto; padding: 0 20px; }

/* ---------- Top bar ---------- */
.sf-topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--sf-border);
}
.sf-topbar-inner { display: flex; align-items: center; gap: 18px; padding: 14px 20px; }
.sf-brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.1rem; flex-shrink: 0; }
.sf-brand img { width: 36px; height: 36px; object-fit: contain; border-radius: 9px; }
.sf-search-wrap { flex: 1; position: relative; max-width: 480px; }
.sf-search-wrap input {
  width: 100%; padding: 11px 16px 11px 42px; border-radius: 999px; border: 1.5px solid var(--sf-border);
  font-size: .92rem; background: var(--sf-bg); transition: border-color .15s, box-shadow .15s;
}
.sf-search-wrap input:focus { outline: none; border-color: var(--sf-primary); box-shadow: 0 0 0 4px rgba(29,95,163,.10); background: #fff; }
.sf-search-wrap .sf-search-icon { position: absolute; left: 15px; top: 50%; transform: translateY(-50%); color: var(--sf-ink-soft); font-size: .9rem; }
.sf-cart-btn {
  margin-left: auto; display: flex; align-items: center; gap: 8px; background: var(--sf-ink);
  color: #fff; border: none; padding: 10px 16px; border-radius: 999px; font-weight: 700; font-size: .88rem;
  cursor: pointer; position: relative; transition: transform .15s, background .15s; flex-shrink: 0;
}
.sf-cart-btn:hover { background: var(--sf-primary-dark); transform: translateY(-1px); }
.sf-cart-count {
  background: var(--sf-secondary); color: #fff; font-size: .72rem; font-weight: 800;
  min-width: 20px; height: 20px; border-radius: 999px; display: flex; align-items: center; justify-content: center; padding: 0 5px;
}

/* ---------- Hero ---------- */
.sf-hero {
  background:
    linear-gradient(160deg, rgba(22,32,48,.82) 0%, rgba(29,95,163,.80) 55%, rgba(60,176,67,.55) 130%),
    url('https://images.unsplash.com/photo-1756705533779-105bf34e0722?auto=format&fit=crop&w=1800&q=60') center 38% / cover no-repeat;
  color: #fff; padding: 56px 20px 84px; position: relative;
}
.sf-hero-inner { max-width: 1180px; margin: 0 auto; position: relative; }
.sf-hero h1 {
  color: #fff; font-size: clamp(1.9rem, 4.4vw, 3.1rem); line-height: 1.12; max-width: 640px;
  margin-bottom: 16px; animation: sf-fade-up .6s ease both;
}
.sf-hero p { color: rgba(255,255,255,.86); font-size: 1.05rem; max-width: 520px; margin-bottom: 28px; animation: sf-fade-up .6s ease .1s both; }
.sf-hero-actions { display: flex; gap: 12px; flex-wrap: wrap; animation: sf-fade-up .6s ease .2s both; }

@keyframes sf-fade-up { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: translateY(0); } }

/* ---------- Buttons ---------- */
.sf-btn {
  display: inline-flex; align-items: center; gap: 8px; border: none; border-radius: 999px;
  padding: 12px 22px; font-weight: 700; font-size: .9rem; cursor: pointer;
  transition: transform .15s, filter .15s, box-shadow .15s;
}
.sf-btn:hover { transform: translateY(-2px); }
.sf-btn-white { background: #fff; color: var(--sf-primary-dark); }
.sf-btn-white:hover { box-shadow: var(--sf-shadow-lg); }
.sf-btn-outline-white { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,.55); }
.sf-btn-outline-white:hover { background: rgba(255,255,255,.12); }
.sf-btn-primary { background: var(--sf-primary); color: #fff; }
.sf-btn-whatsapp { background: var(--sf-whatsapp); color: #fff; }
.sf-btn-whatsapp:hover { filter: brightness(1.06); box-shadow: 0 10px 24px rgba(37,211,102,.35); }
.sf-btn-dark { background: var(--sf-ink); color: #fff; }
.sf-btn-block { width: 100%; justify-content: center; }
.sf-btn:disabled { opacity: .55; cursor: not-allowed; transform: none; }

/* ---------- Category chips ---------- */
.sf-cats { display: flex; gap: 10px; overflow-x: auto; padding: 18px 20px; margin-top: -46px; position: relative; z-index: 5; scrollbar-width: none; }
.sf-cats::-webkit-scrollbar { display: none; }
.sf-chip {
  flex-shrink: 0; background: #fff; border: 1.5px solid var(--sf-border); border-radius: 999px;
  padding: 10px 18px; font-size: .85rem; font-weight: 700; color: var(--sf-ink-soft);
  box-shadow: var(--sf-shadow); cursor: pointer; transition: all .15s;
}
.sf-chip:hover { border-color: var(--sf-primary); color: var(--sf-primary); }
.sf-chip.active { background: var(--sf-primary); border-color: var(--sf-primary); color: #fff; }

/* ---------- Product grid ---------- */
.sf-section { padding: 28px 20px 60px; }
.sf-section-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 20px; }
.sf-section-head h2 { font-size: 1.4rem; }
.sf-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; align-items: stretch; }
@media (min-width: 560px) { .sf-grid { grid-template-columns: repeat(3, 1fr); gap: 16px; } }
@media (min-width: 860px) { .sf-grid { grid-template-columns: repeat(4, 1fr); gap: 18px; } }
@media (min-width: 1120px) { .sf-grid { grid-template-columns: repeat(5, 1fr); gap: 18px; } }

.sf-card {
  background: var(--sf-surface); border: 1px solid var(--sf-border); border-radius: var(--sf-radius);
  overflow: hidden; box-shadow: var(--sf-shadow); transition: transform .2s ease, box-shadow .2s ease;
  opacity: 0; transform: translateY(16px); animation: sf-fade-up .5s ease forwards;
  display: flex; flex-direction: column; height: 100%; min-width: 0;
}
.sf-card:hover { transform: translateY(-5px); box-shadow: var(--sf-shadow-lg); }
.sf-card-media { position: relative; aspect-ratio: 1/1; background: #F1F4F8; overflow: hidden; }
.sf-card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.sf-card:hover .sf-card-media img { transform: scale(1.06); }
.sf-card-media .sf-no-image { display: flex; align-items: center; justify-content: center; height: 100%; color: #B7C1CE; font-size: 2rem; }
.sf-badge-stock {
  position: absolute; top: 10px; left: 10px; background: rgba(255,255,255,.94); color: var(--sf-secondary);
  font-size: .68rem; font-weight: 800; padding: 4px 9px; border-radius: 999px; display: flex; align-items: center; gap: 4px;
}
.sf-badge-stock::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--sf-secondary); }
.sf-card-body { padding: 14px 14px 16px; display: flex; flex-direction: column; flex: 1; }
.sf-card-cat { font-size: .68rem; font-weight: 800; text-transform: uppercase; letter-spacing: .05em; color: var(--sf-ink-soft); margin-bottom: 4px; }
.sf-card-name { font-size: .92rem; font-weight: 700; margin-bottom: 3px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.sf-card-model { font-size: .76rem; color: var(--sf-ink-soft); margin-bottom: 10px; }
.sf-card-foot { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-top: auto; }
.sf-card-price { font-weight: 800; color: var(--sf-primary-dark); font-size: 1rem; }
.sf-add-btn {
  width: 36px; height: 36px; border-radius: 50%; border: none; background: var(--sf-bg);
  color: var(--sf-primary); font-size: 1rem; cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: background .15s, color .15s, transform .15s; flex-shrink: 0;
}
.sf-add-btn:hover { background: var(--sf-primary); color: #fff; transform: scale(1.08); }
.sf-add-btn.sf-added { background: var(--sf-secondary); color: #fff; }

.sf-empty { text-align: center; padding: 70px 20px; color: var(--sf-ink-soft); }
.sf-empty h3 { color: var(--sf-ink); margin-bottom: 6px; }

/* ---------- Trust strip ---------- */
.sf-trust { background: #fff; border-top: 1px solid var(--sf-border); border-bottom: 1px solid var(--sf-border); }
.sf-trust-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; padding: 26px 20px; }
.sf-trust-item { display: flex; align-items: center; gap: 12px; }
.sf-trust-item .sf-trust-icon {
  width: 42px; height: 42px; border-radius: 12px; background: rgba(29,95,163,.09); color: var(--sf-primary);
  display: flex; align-items: center; justify-content: center; font-size: 1.05rem; flex-shrink: 0;
}
.sf-trust-item strong { display: block; font-size: .86rem; }
.sf-trust-item span { font-size: .76rem; color: var(--sf-ink-soft); }

/* ---------- Footer ---------- */
.sf-footer { background: var(--sf-ink); color: rgba(255,255,255,.7); padding: 44px 20px 28px; margin-top: 30px; }
.sf-footer-inner { max-width: 1180px; margin: 0 auto; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 24px; }
.sf-footer-brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 800; font-size: 1.05rem; }
.sf-footer-brand img { width: 32px; height: 32px; object-fit: contain; border-radius: 8px; }
.sf-footer small { display: block; margin-top: 18px; opacity: .55; font-size: .76rem; }

/* ---------- Product detail ---------- */
.sf-breadcrumb { font-size: .82rem; color: var(--sf-ink-soft); padding: 16px 20px 0; }
.sf-breadcrumb a:hover { color: var(--sf-primary); }
.sf-pd-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 42px; padding: 24px 20px 60px; max-width: 1180px; margin: 0 auto; align-items: flex-start; }
.sf-pd-media { border-radius: var(--sf-radius); overflow: hidden; background: #F1F4F8; aspect-ratio: 1/1; position: sticky; top: 90px; }
.sf-pd-media img { width: 100%; height: 100%; object-fit: cover; }
.sf-pd-media .sf-no-image { display: flex; align-items: center; justify-content: center; height: 100%; color: #B7C1CE; font-size: 3rem; }
.sf-pd-cat { color: var(--sf-primary); font-weight: 800; font-size: .78rem; text-transform: uppercase; letter-spacing: .05em; margin-bottom: 8px; }
.sf-pd-title { font-size: 1.7rem; margin-bottom: 4px; }
.sf-pd-model { color: var(--sf-ink-soft); margin-bottom: 18px; }
.sf-pd-price { font-size: 2rem; font-weight: 800; color: var(--sf-primary-dark); margin-bottom: 4px; }
.sf-pd-stock { font-size: .84rem; color: var(--sf-secondary); font-weight: 700; margin-bottom: 22px; display: flex; align-items: center; gap: 6px; }
.sf-pd-stock::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: var(--sf-secondary); }
.sf-pd-desc { color: var(--sf-ink-soft); margin-bottom: 22px; line-height: 1.7; }
.sf-spec-table { width: 100%; border-collapse: collapse; margin-bottom: 26px; }
.sf-spec-table tr { border-bottom: 1px solid var(--sf-border); }
.sf-spec-table td { padding: 10px 0; font-size: .87rem; }
.sf-spec-table td:first-child { color: var(--sf-ink-soft); width: 40%; }
.sf-spec-table td:last-child { font-weight: 700; }
.sf-pd-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.sf-qty-stepper { display: flex; align-items: center; border: 1.5px solid var(--sf-border); border-radius: 999px; overflow: hidden; }
.sf-qty-stepper button { width: 38px; height: 42px; border: none; background: #fff; font-size: 1.1rem; cursor: pointer; color: var(--sf-ink-soft); }
.sf-qty-stepper button:hover { background: var(--sf-bg); color: var(--sf-primary); }
.sf-qty-stepper span { width: 34px; text-align: center; font-weight: 700; }

/* ---------- Cart drawer ---------- */
.sf-overlay { position: fixed; inset: 0; background: rgba(16,24,34,.45); z-index: 90; opacity: 0; pointer-events: none; transition: opacity .25s; }
.sf-overlay.open { opacity: 1; pointer-events: auto; }
.sf-drawer {
  position: fixed; top: 0; right: 0; bottom: 0; width: 400px; max-width: 92vw; background: #fff; z-index: 95;
  transform: translateX(100%); transition: transform .3s cubic-bezier(.2,.9,.25,1); display: flex; flex-direction: column;
  box-shadow: -10px 0 40px rgba(0,0,0,.15);
}
.sf-drawer.open { transform: translateX(0); }
.sf-drawer-head { display: flex; align-items: center; justify-content: space-between; padding: 18px 20px; border-bottom: 1px solid var(--sf-border); }
.sf-drawer-head h3 { margin: 0; font-size: 1.05rem; }
.sf-drawer-close { background: var(--sf-bg); border: none; width: 34px; height: 34px; border-radius: 50%; cursor: pointer; font-size: 1rem; color: var(--sf-ink-soft); }
.sf-drawer-body { flex: 1; overflow-y: auto; padding: 16px 20px; }
.sf-drawer-foot { border-top: 1px solid var(--sf-border); padding: 16px 20px 20px; }

.sf-cart-line { display: flex; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--sf-border); }
.sf-cart-line img { width: 58px; height: 58px; border-radius: 10px; object-fit: cover; background: #F1F4F8; flex-shrink: 0; }
.sf-cart-line-body { flex: 1; min-width: 0; }
.sf-cart-line-name { font-size: .85rem; font-weight: 700; margin-bottom: 2px; }
.sf-cart-line-price { font-size: .8rem; color: var(--sf-ink-soft); }
.sf-cart-line-actions { display: flex; align-items: center; justify-content: space-between; margin-top: 6px; }
.sf-cart-line-qty { display: flex; align-items: center; gap: 8px; font-size: .82rem; }
.sf-cart-line-qty button { width: 22px; height: 22px; border-radius: 6px; border: 1px solid var(--sf-border); background: #fff; cursor: pointer; }
.sf-cart-line-remove { background: none; border: none; color: #C0463F; font-size: .76rem; cursor: pointer; font-weight: 600; }

.sf-cart-empty { text-align: center; padding: 60px 20px; color: var(--sf-ink-soft); }
.sf-cart-empty .sf-cart-empty-icon { font-size: 2.4rem; margin-bottom: 12px; opacity: .4; }

.sf-cart-total-row { display: flex; justify-content: space-between; font-weight: 800; font-size: 1.15rem; margin-bottom: 14px; }

/* ---------- Checkout form (inside drawer) ---------- */
.sf-field { margin-bottom: 12px; }
.sf-field label { display: block; font-size: .78rem; font-weight: 700; margin-bottom: 5px; color: var(--sf-ink-soft); }
.sf-field input, .sf-field textarea {
  width: 100%; padding: 10px 13px; border: 1.5px solid var(--sf-border); border-radius: 10px; font-size: .88rem; font-family: inherit;
}
.sf-field input:focus, .sf-field textarea:focus { outline: none; border-color: var(--sf-primary); }
.sf-checkout-note { font-size: .76rem; color: var(--sf-ink-soft); margin-bottom: 14px; line-height: 1.6; }

/* ---------- Floating WhatsApp bubble ---------- */
.sf-fab {
  position: fixed; bottom: 22px; right: 22px; z-index: 60;
  width: 58px; height: 58px; border-radius: 50%; background: var(--sf-whatsapp); color: #fff;
  display: flex; align-items: center; justify-content: center; font-size: 1.5rem; border: none; cursor: pointer;
  box-shadow: 0 10px 26px rgba(37,211,102,.4); animation: sf-fab-pulse 2.6s infinite;
}
@keyframes sf-fab-pulse {
  0%, 100% { box-shadow: 0 10px 26px rgba(37,211,102,.4); }
  50% { box-shadow: 0 10px 26px rgba(37,211,102,.4), 0 0 0 10px rgba(37,211,102,.12); }
}

/* ---------- Toast ---------- */
.sf-toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px); z-index: 200;
  background: var(--sf-ink); color: #fff; padding: 12px 22px; border-radius: 999px; font-size: .85rem; font-weight: 600;
  opacity: 0; pointer-events: none; transition: all .25s;
}
.sf-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .sf-pd-grid { grid-template-columns: 1fr; gap: 24px; }
  .sf-pd-media { position: static; }
  .sf-trust-grid { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .sf-search-wrap { display: none; }
  .sf-hero { padding: 40px 20px 68px; }
  .sf-drawer { width: 100%; max-width: 100%; }

  .sf-card-body { padding: 10px 10px 12px; }
  .sf-card-name { font-size: .82rem; }
  .sf-card-model { font-size: .7rem; margin-bottom: 6px; }
  .sf-card-price { font-size: .88rem; }
  .sf-card-cat { font-size: .62rem; }
  .sf-add-btn { width: 30px; height: 30px; font-size: .85rem; }
  .sf-badge-stock { font-size: .6rem; padding: 3px 7px; top: 7px; left: 7px; }
}