/* ==========================================================================
   muaban.vin — style.css
   Mục tiêu: rõ ràng, chuyên nghiệp, mượt trên desktop & mobile
   ========================================================================== */

/* -------------------- 1) Reset & Variables -------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

:root{
  /* Tone sáng, trung tính */
  --bg:        #f7f8fb;
  --surface:   #ffffff;
  --border:    #e5e7eb;
  --border-2:  #eef1f5;
  --text:      #0f172a;
  --text-dim:  #475569;

  /* Accent */
  --primary:   #2563eb; /* xanh dương hiện đại */
  --primary-2: #1e40af;
  --good:      #16a34a;
  --warn:      #eab308;
  --bad:       #e11d48;

  /* Misc */
  --chip:      #0ea5e9;
  --muted:     #94a3b8;
  --focus:     0 0 0 3px rgba(37, 99, 235, .25);
  --radius:    12px;
  --radius-sm: 10px;
  --shadow:    0 6px 24px rgba(2, 6, 23, .06);
  --shadow-sm: 0 3px 12px rgba(2, 6, 23, .05);
}

html, body{
  height: 100%;
}
body{
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--text);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  line-height: 1.5;
}

/* Utilities */
.container{
  width: min(1200px, 92%);
  margin: 0 auto;
}
.hidden{ display:none !important; }
.mono{ font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace; }

/* -------------------- 2) Header -------------------- */
.header{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 0;
}
.brand{ display:flex; align-items:center; gap:12px; }
.logo{
  width: 44px; height: 44px; border-radius: 50%;
  object-fit: cover;
  box-shadow: var(--shadow-sm);
}
.brand-title{
  margin: 0; font-weight: 800; letter-spacing: .2px;
  font-size: clamp(18px, 2.4vw, 22px);
}
.brand-sub{
  margin: 0; color: var(--text-dim); font-size: 13px;
}
.header-right{
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap; justify-content: flex-end;
}
.price-chip{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  box-shadow: var(--shadow-sm);
}
.wallet-box{
  display: flex; align-items: center; gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 10px;
  box-shadow: var(--shadow-sm);
}
.wallet-box span{ font-size: 13px; color: var(--text-dim); }
.wallet-box a{
  text-decoration: none; color: var(--text);
  background: #eef2ff; border: 1px solid #e5e7ff; padding: 4px 8px; border-radius: 999px; font-size: 12px;
}

/* -------------------- 3) Buttons & Inputs -------------------- */
.btn{
  appearance: none;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
  transition: .2s ease;
  box-shadow: var(--shadow-sm);
  font-size: 14px;
}
.btn:hover{ transform: translateY(-1px); }
.btn:focus{ outline: none; box-shadow: var(--focus); }
.btn.primary{
  background: var(--primary); border-color: var(--primary);
  color: #fff;
}
.btn.primary:hover{ background: var(--primary-2); }
.btn.small{ padding: 6px 10px; font-size: 12px; }

input, select, textarea{
  width: 100%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 14px;
  outline: none;
}
input:focus, select:focus, textarea:focus{ box-shadow: var(--focus); border-color: var(--primary); }

/* -------------------- 4) Menu (sau khi kết nối) -------------------- */
.menu{
  display: flex; gap: 10px; flex-wrap: wrap;
  padding: 8px 0 2px;
  border-top: 1px solid var(--border-2);
  border-bottom: 1px solid var(--border-2);
}
.menu .btn{ border-radius: 999px; }

/* -------------------- 5) Search bar -------------------- */
.search{
  display: grid; grid-template-columns: 1fr auto; gap: 10px;
  padding: 16px 0 6px;
}
#btnSearch{ padding-inline: 18px; }

/* -------------------- 6) Product list -------------------- */
.products{
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(12, 1fr);
  padding: 16px 0 28px;
}
.product-card{
  grid-column: span 12;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: 112px 1fr;
  gap: 14px;
  padding: 12px;
  align-items: center;
}
.product-thumb{
  width: 100%; height: 90px; border-radius: 10px; object-fit: cover;
  background: #f3f4f6; border: 1px solid var(--border-2);
}
.product-info{ display: grid; gap: 6px; }
.product-title{
  margin: 0; font-size: 16px; font-weight: 700; letter-spacing: .2px;
}
.product-meta{
  color: var(--text-dim); font-size: 13px;
}
.price-vnd{
  font-weight: 800; letter-spacing: .2px;
}
.stock-badge{
  display: inline-flex; align-items: center; gap:6px;
  background: #ecfeff; color:#0369a1; border:1px solid #bae6fd;
  padding: 4px 8px; border-radius: 999px; font-size: 12px;
}
.stock-badge.out{ background:#fff1f2; color:#be123c; border-color:#fecdd3; }

.card-actions{
  margin-top: 6px;
  display: flex; gap: 8px; flex-wrap: wrap;
}
.card-actions .btn{ border-radius: 8px; }

/* Breakpoints */
@media (min-width: 640px){
  .product-card{ grid-column: span 6; }
}
@media (min-width: 940px){
  .product-card{ grid-column: span 4; }
}

/* -------------------- 7) Orders sections -------------------- */
.orders{ padding: 6px 0 24px; }
.orders h2{
  font-size: 18px; margin: 6px 0 12px;
}
.order-list{
  display: grid; gap: 10px;
}
.order-card{
  background: var(--surface); border:1px solid var(--border); border-radius: var(--radius);
  padding: 12px; box-shadow: var(--shadow-sm);
  display: grid; gap: 6px;
}
.order-row{ display:flex; gap:8px; flex-wrap:wrap; font-size: 13px; color: var(--text-dim); }
.order-strong{ font-weight:700; color: var(--text); }

/* -------------------- 8) Modals -------------------- */
.modal{
  position: fixed; inset: 0;
  background: rgba(15, 23, 42, .38);
  display: grid; place-items: center;
  z-index: 50;
  padding: 16px;
}
.modal-content{
  width: min(680px, 96%);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  box-shadow: var(--shadow);
  display: grid; gap: 12px;
}
.modal-content h2{
  margin: 0 0 6px; font-size: 18px;
}
.modal-content label{
  display: grid; gap: 6px; font-size: 14px; color: var(--text-dim);
}
.modal-content .row{
  display: flex; align-items: center; gap: 10px;
}
.hint{ margin: 2px 0 0; color: var(--muted); font-size: 13px; }
.total-vin{
  margin-top: 4px; font-weight: 800; letter-spacing: .3px;
}
.actions{
  display: flex; gap: 10px; justify-content: flex-end; margin-top: 6px;
}

/* -------------------- 9) Footer (stick to bottom) -------------------- */
main{ flex: 1 0 auto; }
.footer{
  margin-top: auto;
  display: flex; gap: 16px; flex-wrap: wrap; align-items: center;
  padding: 18px 0 26px;
  border-top: 1px solid var(--border-2);
}
.footer a{
  color: var(--text-dim); text-decoration: none; font-weight: 600; font-size: 14px;
  padding: 8px 10px; border-radius: 8px;
  border: 1px solid transparent;
}
.footer a:hover{ color: var(--text); border-color: var(--border); background: var(--surface); box-shadow: var(--shadow-sm); }

/* -------------------- 10) Helpers for dynamic items -------------------- */
.tag{
  display:inline-flex; align-items:center; gap:6px;
  padding: 4px 8px; border-radius: 999px; font-size: 12px;
  border: 1px solid var(--border); background: var(--surface); color: var(--text-dim);
}
.badge{
  padding: 2px 6px; border-radius: 6px; font-size: 12px; border:1px solid var(--border);
}

/* -------------------- 11) Product card content slots (for app.js) -------------------- */
/* Khung đặt vị trí nội dung được render bằng JS */
.product-top{ display:flex; align-items:center; justify-content: space-between; gap:10px; }
.unit{ color: var(--text-dim); font-size: 13px; }

/* -------------------- 12) Nice scroll (optional) -------------------- */
:focus-visible{ outline: none; box-shadow: var(--focus); }
::selection{ background: #c7d2fe; color: #111827; }

/* ============ Mobile-first usability tweaks ============ */

/* Khóa cuộn nền khi mở modal */
body.no-scroll { overflow: hidden; }

/* Modal chiếm chiều cao màn hình, phần nội dung cuộn bên trong */
.modal { padding: 0; }
.modal-content{
  max-height: 92vh;           /* desktop/tablet */
  overflow: auto;
  display: flex;
  flex-direction: column;
}

/* Thanh actions “dính” ở cuối modal để luôn bấm được */
.modal-content .actions{
  position: sticky;
  bottom: 0;
  background: linear-gradient(to top, var(--surface), rgba(255,255,255,0.92));
  padding-top: 10px;
  box-shadow: 0 -6px 16px rgba(2,6,23,.08);
  z-index: 5;
}

/* Tăng kích thước vùng chạm trên mobile, an toàn với tai thỏ */
@media (max-width: 640px){
  .modal-content{
    width: 100%;
    height: 100vh;
    max-height: 100vh;
    border-radius: 0;
    padding: 14px 14px calc(16px + env(safe-area-inset-bottom));
  }
  .modal-content h2{
    position: sticky;
    top: 0;
    background: var(--surface);
    padding-bottom: 8px;
    margin-bottom: 4px;
    z-index: 6;
  }

  /* Nút & input to, dễ bấm — tránh bị bàn phím che */
  .btn{ padding: 14px 16px; font-size: 16px; min-height: 44px; }
  input, select, textarea{ padding: 14px; font-size: 16px; min-height: 44px; }

  /* Nút ở khu actions tự giãn đều, dễ bấm */
  .actions{ display: flex; gap: 10px; }
  .actions .btn{ flex: 1; }

  /* Danh sách sản phẩm sát lề đẹp hơn trên mobile */
  .products{ gap: 12px; }
  .product-card{ grid-template-columns: 96px 1fr; padding: 10px; }
  .product-thumb{ height: 80px; }
}

/* Cải thiện cuộn mượt trong khối modal */
.modal-content{ -webkit-overflow-scrolling: touch; scroll-behavior: smooth; }

/* Căn giữa các nút trong menu và thanh tìm kiếm */
.search, .menu{
  display: flex;
  justify-content: center;
  gap: 10px;
}

.menu{
  padding: 8px 0;
  justify-content: center; /* Căn giữa các nút */
}

.menu .btn{
  text-align: center;
  flex: 1;
}

/* Căn giữa các link chân trang */
.footer{
  display: flex;
  justify-content: center; /* Căn giữa */
  gap: 16px;
  padding: 18px 0 26px;
  border-top: 1px solid var(--border-2);
}
.footer a{
  color: var(--text-dim);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid transparent;
  text-align: center;
}
.footer a:hover{ 
  color: var(--text);
  border-color: var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}