/* =====================================================================
   GIÁ VỐN — CỬA HÀNG KHÁNH HÀ (trang nội bộ, tách biệt với web chính)
   Nhại lại đúng phong cách "thẻ mobile" của trang admin Khánh Hà
   (admin/index.html) — nền xám nhạt, thẻ trắng bo góc, danh sách dọc.
   ===================================================================== */

:root{
  --pine:#1B4B5A; --pine-light:#2E6E7E; --pine-pale:#E3EEEC;
  --copper:#D9642F; --copper-pale:#F7E2D3;
  --bg:#F5F6F5; --card:#FFFFFF; --ink:#26302F; --muted:#6B6D63;
  --border:rgba(31,59,44,.12); --radius:12px;
  --ok:#2E7D4F; --ok-bg:#E5F3EA; --warn:#B4552B; --warn-bg:#FBE9DF;
}
*{box-sizing:border-box;margin:0;padding:0;}
[hidden]{display:none !important;}
body{
  font-family:'Inter',sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{font-family:'Fraunces',serif;font-weight:600;color:var(--pine);letter-spacing:-0.01em;}
img,svg{display:block;max-width:100%;}
button{font-family:inherit;cursor:pointer;}
input,select{font-family:inherit;}
.wrap{max-width:720px;margin:0 auto;padding:0 20px;}

/* ===== Nút dùng chung ===== */
.btn-primary,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;white-space:nowrap;
  padding:11px 20px;border-radius:999px;font-weight:600;font-size:13.5px;cursor:pointer;border:none;
  transition:transform .15s ease, background .15s ease;
}
.btn-primary{background:var(--copper);color:#fff;}
.btn-primary:hover{transform:translateY(-1px);}
.btn-primary:disabled{opacity:.6;cursor:not-allowed;transform:none;}
.btn-ghost{background:transparent;border:1.5px solid var(--border);color:var(--ink);}
.btn-ghost:hover{background:var(--bg);}
.icon-btn{
  width:34px;height:34px;border-radius:8px;border:1px solid var(--border);background:#fff;
  display:flex;align-items:center;justify-content:center;flex:none;
}
.icon-btn svg{width:16px;height:16px;stroke:var(--muted);}
.icon-btn:hover svg{stroke:var(--copper);}

/* ===== Cổng mật khẩu ===== */
.login-gate{
  min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:var(--pine);padding:24px;
}
.login-box{
  background:var(--card);border-radius:var(--radius);padding:36px 32px;max-width:360px;width:100%;
  text-align:center;display:flex;flex-direction:column;gap:14px;
}
.login-logo{width:56px;height:56px;border-radius:50%;object-fit:cover;margin:0 auto;}
.login-box h1{font-size:24px;margin:0;}
.login-box p{color:var(--muted);font-size:13.5px;margin:0;}
.login-box .eyebrow{
  font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--copper);
}
.login-box input{
  padding:13px 16px;border-radius:10px;border:1.5px solid var(--border);
  font-size:16px;font-family:'Inter',sans-serif;text-align:center;
}
.login-box input:focus{outline:none;border-color:var(--copper);}
.login-error{color:var(--warn);font-size:13px;font-weight:600;min-height:1em;margin:0;}

/* ===== Thanh trên cùng ===== */
.topbar{
  background:var(--card);border-bottom:1px solid var(--border);padding:14px 0;
}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;}
.topbar h2{font-size:19px;}
.topbar-brand{display:flex;align-items:center;gap:10px;}
.topbar-brand img{width:34px;height:34px;border-radius:50%;object-fit:cover;flex:none;}

/* ===== Nội dung ===== */
.content{padding:20px 0 60px;}
.section-head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:18px;flex-wrap:wrap;}
.section-head h1{font-size:21px;margin-bottom:4px;}
.section-head p{font-size:12.5px;color:var(--muted);}

/* ===== Bộ lọc ===== */
.filter-toolbar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px;}
.filter-toolbar input,.filter-toolbar select{
  padding:11px 14px;border-radius:10px;border:1.5px solid var(--border);font-size:13.5px;
  background:#fff;color:var(--ink);width:100%;
}
.filter-toolbar input:focus,.filter-toolbar select:focus{outline:none;border-color:var(--copper);}
@media (max-width:860px){.filter-toolbar input,.filter-toolbar select{font-size:16px;}}

.empty-state{text-align:center;color:var(--muted);padding:40px 0;}

/* ===== Thẻ sản phẩm (dạng danh sách, giống admin mobile) ===== */
.m-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:12px 13px;margin-bottom:9px;}
.m-card[hidden]{display:none;}
.m-top{display:flex;align-items:flex-start;gap:10px;}
.m-thumb{width:50px;height:50px;border-radius:10px;flex:none;background-size:cover;background-position:center;display:flex;align-items:center;justify-content:center;color:#fff;}
.m-thumb svg{width:20px;height:20px;stroke:currentColor;}
.m-info{flex:1;min-width:0;}
.m-name{font-family:'Fraunces',serif;font-weight:600;font-size:14.5px;color:var(--ink);line-height:1.3;margin-bottom:4px;}
.m-tag{display:inline-flex;background:var(--pine-pale);color:var(--pine);font-size:11px;font-weight:600;padding:2.5px 9px;border-radius:999px;}
.m-acts{display:flex;gap:6px;flex:none;}
.m-acts button{width:29px;height:29px;border-radius:8px;border:1px solid var(--border);background:#fff;display:flex;align-items:center;justify-content:center;color:var(--muted);padding:0;}
.m-acts button svg{width:14px;height:14px;stroke:var(--muted);}
.m-acts .m-del:hover{border-color:var(--warn);}
.m-acts .m-del:hover svg{stroke:var(--warn);}
.m-acts .m-edit:hover{border-color:var(--copper);}
.m-acts .m-edit:hover svg{stroke:var(--copper);}
.m-div{border-top:1px solid var(--border);margin:10px 0 9px;}
.m-bottom{display:flex;align-items:center;justify-content:space-between;gap:8px;}

/* Trái = giá vốn (bấm để sửa nhanh), phải = giá bán */
.m-cost,.m-sell{display:flex;flex-direction:column;gap:1px;min-width:0;}
.m-sell{align-items:flex-end;text-align:right;}
.m-cost label,.m-sell label{font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em;}
.m-cost b,.m-sell b{font-variant-numeric:tabular-nums;font-weight:700;font-size:14.5px;}
.m-cost b{color:var(--copper);}
.m-sell b{color:var(--pine);}
.m-cost{cursor:pointer;border-radius:8px;padding:2px 6px;margin:-2px -6px;}
.m-cost:hover{background:var(--pine-pale);}
.m-cost-input{
  width:100%;max-width:110px;padding:5px 8px;border-radius:8px;border:1.5px solid var(--copper);
  font-size:13.5px;font-family:'Inter',sans-serif;background:var(--card);
}
@media (max-width:860px){.m-cost-input{font-size:16px;}}

/* ===== Skeleton loading ===== */
@keyframes skeletonPulse{0%,100%{opacity:.5;}50%{opacity:1;}}
.skeleton-thumb,.skeleton-line{
  background:rgba(31,59,44,.08);border-radius:8px;animation:skeletonPulse 1.3s ease-in-out infinite;
}
.skeleton-thumb{width:50px;height:50px;border-radius:10px;flex:none;}
.skeleton-body{flex:1;display:flex;flex-direction:column;gap:8px;justify-content:center;}
.skeleton-line{height:10px;}
.skeleton-line.w-60{width:60%;height:13px;}
.skeleton-line.w-30{width:30%;}

/* ===== Phân trang ===== */
.pagination-bar{display:flex;align-items:center;justify-content:center;gap:14px;margin-top:20px;}
.pagination-bar .page-btn{
  padding:9px 18px;border-radius:999px;border:1.5px solid var(--border);background:var(--card);
  font-size:13.5px;font-weight:600;color:var(--ink);cursor:pointer;
}
.pagination-bar .page-btn:hover:not(:disabled){border-color:var(--copper);color:var(--copper);}
.pagination-bar .page-btn:disabled{opacity:.4;cursor:not-allowed;}
.pagination-bar .page-info{font-size:13.5px;color:var(--muted);}

/* ===== Ghi chú cuối trang ===== */
.page-note{text-align:center;color:var(--muted);font-size:12.5px;padding:20px 0 0;}

/* ===== Modal thêm/sửa sản phẩm ===== */
.modal-overlay{
  position:fixed;inset:0;background:rgba(20,30,28,.5);z-index:150;
  display:flex;align-items:center;justify-content:center;padding:20px;
}
.modal-overlay[hidden]{display:none;}
.modal-box{
  background:var(--card);border-radius:var(--radius);max-width:460px;width:100%;
  max-height:90vh;overflow-y:auto;display:flex;flex-direction:column;
  box-shadow:0 24px 60px rgba(0,0,0,.25);
}
.modal-head{display:flex;justify-content:space-between;align-items:center;padding:18px 22px;border-bottom:1px solid var(--border);}
.modal-head h2{font-size:18px;}
.modal-close{background:none;border:none;font-size:22px;line-height:1;color:var(--muted);cursor:pointer;padding:4px;}
.modal-close:hover{color:var(--copper);}
.modal-body{padding:18px 22px;display:flex;flex-direction:column;gap:4px;}
.modal-body label{font-size:12px;font-weight:600;color:var(--ink);margin-top:10px;}
.modal-body input,.modal-body select{
  padding:10px 13px;border-radius:8px;border:1.5px solid var(--border);
  font-family:'Inter',sans-serif;font-size:13.5px;background:var(--card);width:100%;
}
.modal-body input:focus,.modal-body select:focus{outline:none;border-color:var(--copper);}
.modal-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.modal-row label{margin-top:10px;}
.modal-foot{display:flex;justify-content:flex-end;gap:10px;padding:14px 22px;border-top:1px solid var(--border);}
.modal-foot .btn-primary{background:var(--copper);color:#fff;}
@media (max-width:860px){.modal-body input,.modal-body select{font-size:16px;}}

/* ===== Ảnh sản phẩm trong modal ===== */
.image-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px;}
.image-slot{
  position:relative;width:60px;height:60px;border-radius:8px;background-size:cover;background-position:center;
  background-color:var(--pine-pale);flex:none;
}
.image-remove{
  position:absolute;top:-6px;right:-6px;width:20px;height:20px;border-radius:50%;background:var(--warn);color:#fff;
  border:2px solid var(--card);font-size:13px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;
}
.image-drop{
  margin-top:10px;padding:14px;border-radius:8px;border:1.5px dashed var(--border);
  text-align:center;font-size:12.5px;color:var(--muted);cursor:pointer;
}
.image-drop:hover,.image-drop.drag-over{border-color:var(--copper);color:var(--copper);}
.image-drop.disabled{opacity:.5;cursor:not-allowed;}

/* ===== Toast thông báo ===== */
.toast{
  position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(20px);
  background:var(--ink);color:#fff;padding:12px 22px;border-radius:999px;font-size:13.5px;font-weight:600;
  opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:250;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0);}