/*
  style.css
  วางไว้ที่ C:\xampp\htdocs\webruam\assets\style.css
  ธีม "บัตรรายการสินค้าเครื่องเขียน" — กระดาษ/เส้นบรรทัด/ตัวเลขแบบเครื่องพิมพ์ดีด
*/

:root{
  --paper:#F2ECDC;
  --paper-2:#EAE2CB;
  --ink:#2B2620;
  --ink-soft:#5B5346;
  --ledger:#C9BFA0;
  --stamp:#AE3C2E;
  --stamp-dark:#8E2F24;
  --steel:#7A7566;
  --card:#FBF8F0;
  --radius:2px;
}
*{box-sizing:border-box;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'Sarabun',sans-serif;
  background-image:linear-gradient(var(--ledger) 1px, transparent 1px);
  background-size:100% 2.4em;
  background-attachment:local;
}
.mono{font-family:'Space Mono',monospace;}
a{color:inherit;text-decoration:none;}

.ledger-strip{
  background:var(--ink);
  color:var(--paper);
  font-family:'Space Mono',monospace;
  font-size:12px;
  letter-spacing:.08em;
  padding:6px 20px;
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:4px;
}

header{
  background:var(--paper);
  border-bottom:3px double var(--ink);
  padding:18px 20px 14px;
}
.header-row{
  max-width:1180px;margin:0 auto;
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:20px;flex-wrap:wrap;
}
.shopname{font-size:30px;font-weight:700;letter-spacing:.01em;margin:0;}
.shopname span{
  display:block;font-family:'Space Mono',monospace;font-size:11px;font-weight:400;
  color:var(--ink-soft);letter-spacing:.15em;margin-top:4px;
}
.header-actions{display:flex;align-items:center;gap:10px;}
.btn{
  font-family:'Sarabun',sans-serif;font-weight:600;font-size:14px;
  padding:9px 16px;border-radius:var(--radius);border:1.5px solid var(--ink);
  background:transparent;color:var(--ink);cursor:pointer;transition:.15s;
  display:inline-block;
}
.btn:hover{background:var(--ink);color:var(--paper);}
.btn-stamp{background:var(--stamp);border-color:var(--stamp);color:#fff;}
.btn-stamp:hover{background:var(--stamp-dark);border-color:var(--stamp-dark);}

.search-row{max-width:1180px;margin:14px auto 0;display:flex;gap:10px;flex-wrap:wrap;}
.search-box{
  flex:1;min-width:220px;display:flex;border:1.5px solid var(--ink);
  background:var(--card);border-radius:var(--radius);overflow:hidden;
}
.search-box input{
  flex:1;border:none;background:transparent;padding:11px 14px;
  font-family:'Sarabun',sans-serif;font-size:15px;outline:none;
}
.search-box button{
  border:none;background:var(--ink);color:var(--paper);padding:0 18px;
  font-weight:600;cursor:pointer;
}

.cat-tabs{
  max-width:1180px;margin:16px auto 0;display:flex;gap:8px;
  overflow-x:auto;padding-bottom:4px;
}
.cat-tab{
  flex:0 0 auto;font-family:'Space Mono',monospace;font-size:12px;letter-spacing:.04em;
  padding:8px 14px;background:var(--paper-2);border:1px solid var(--ledger);border-bottom:none;
  border-radius:4px 4px 0 0;cursor:pointer;color:var(--ink-soft);white-space:nowrap;
}
.cat-tab.active{background:var(--card);color:var(--ink);border-color:var(--ink);font-weight:700;}

main{max-width:1180px;margin:0 auto;padding:18px 20px 60px;}
.grid-info{
  display:flex;justify-content:space-between;align-items:center;
  font-family:'Space Mono',monospace;font-size:12px;color:var(--ink-soft);
  margin-bottom:14px;border-top:1px solid var(--ink);padding-top:8px;
}
.grid{display:grid;grid-template-columns:repeat(auto-fill, minmax(190px,1fr));gap:16px;}

.card{
  position:relative;background:var(--card);border:1px solid var(--ink);
  border-radius:var(--radius);padding:14px 14px 16px;display:flex;flex-direction:column;
  box-shadow:3px 3px 0 var(--ledger);
}
.card-thumb{
  width:100%;aspect-ratio:1/1;
  background:repeating-linear-gradient(45deg, var(--paper-2), var(--paper-2) 6px, var(--card) 6px, var(--card) 12px);
  border:1px dashed var(--ledger);border-radius:2px;
  display:flex;align-items:center;justify-content:center;
  font-size:11px;color:var(--steel);font-family:'Space Mono',monospace;margin-bottom:10px;
  overflow:hidden;
}
.card-thumb img{width:100%;height:100%;object-fit:cover;}
.card-cat{
  font-family:'Space Mono',monospace;font-size:10px;letter-spacing:.08em;
  color:var(--steel);text-transform:uppercase;margin-bottom:4px;
}
.card-link-wrap{display:block;color:inherit;text-decoration:none;}
.card-name{font-size:15px;font-weight:600;line-height:1.35;margin:0 0 6px;min-height:2.7em;}
.card-meta{
  display:flex;justify-content:space-between;align-items:center;gap:6px;flex-wrap:wrap;
  font-family:'Space Mono',monospace;font-size:10.5px;color:var(--steel);margin-bottom:6px;
}
.card-stock{margin-bottom:10px;}
.stock-badge{
  display:inline-block;font-size:11px;font-weight:700;padding:3px 9px;border-radius:20px;
  font-family:'Space Mono',monospace;
}
.stock-badge.have-stock{background:#EAF0E5;color:#3A4A36;}
.stock-badge.need-order{background:#F7E6E2;color:var(--stamp-dark);}

/* ===== Back to top (ปุ่มลอย) ===== */
.back-to-top{
  position:fixed;right:20px;bottom:20px;z-index:200;
  width:46px;height:46px;border-radius:50%;
  background:var(--ink);color:var(--paper);border:2px solid var(--paper);
  display:flex;align-items:center;justify-content:center;
  font-size:20px;cursor:pointer;box-shadow:0 3px 10px rgba(0,0,0,.25);
  opacity:0;pointer-events:none;transform:translateY(10px);
  transition:opacity .2s, transform .2s;
}
.back-to-top.show{opacity:1;pointer-events:auto;transform:translateY(0);}
.back-to-top:hover{background:var(--stamp);}
@media (max-width:560px){
  .back-to-top{right:14px;bottom:14px;width:42px;height:42px;font-size:18px;}
}
.card-bottom{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:8px;}
.price{font-family:'Space Mono',monospace;font-size:18px;font-weight:700;}
.price small{font-size:11px;font-weight:400;color:var(--ink-soft);}
.add-btn{
  border:1.5px solid var(--ink);background:var(--ink);color:var(--paper);
  font-size:12px;font-weight:700;padding:7px 10px;border-radius:2px;cursor:pointer;
  white-space:nowrap;
}
.add-btn:hover{background:var(--stamp);border-color:var(--stamp);}

.empty-state{
  text-align:center;padding:60px 20px;color:var(--ink-soft);
  font-family:'Space Mono',monospace;font-size:13px;
}

footer{background:var(--ink);color:var(--paper-2);padding:22px 20px;font-size:13px;}
footer .fwrap{
  max-width:1180px;margin:0 auto;display:flex;justify-content:space-between;
  flex-wrap:wrap;gap:10px;font-family:'Space Mono',monospace;
}

@media (max-width:560px){
  .shopname{font-size:24px;}
  .header-row{align-items:flex-start;}
}

/* ===== Auth pages (login/register) ===== */
.auth-wrap{
  max-width:460px;margin:40px auto;padding:0 20px 60px;
}
.auth-card{
  background:var(--card);border:1px solid var(--ink);border-radius:var(--radius);
  padding:28px 24px;box-shadow:3px 3px 0 var(--ledger);
}
.auth-title{font-size:20px;font-weight:700;margin:0 0 4px;}
.auth-sub{font-size:13px;color:var(--ink-soft);margin:0 0 20px;}

.tab-switch{display:flex;border:1.5px solid var(--ink);border-radius:var(--radius);overflow:hidden;margin-bottom:20px;}
.tab-switch label{
  flex:1;text-align:center;padding:10px 0;font-size:14px;font-weight:600;
  cursor:pointer;background:var(--paper-2);color:var(--ink-soft);
}
.tab-switch input{display:none;}
.tab-switch input:checked + label{background:var(--ink);color:var(--paper);}

.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;}
.field input, .field select{
  width:100%;padding:10px 12px;border:1.5px solid var(--ink);border-radius:var(--radius);
  font-family:'Sarabun',sans-serif;font-size:15px;background:#fff;
  height:42px;box-sizing:border-box;
}
.field select{appearance:auto;-webkit-appearance:auto;}
.field small{display:block;margin-top:4px;font-size:11.5px;color:var(--steel);}

.btn-block{width:100%;padding:11px 0;font-size:15px;}

.alert{
  padding:10px 14px;border-radius:var(--radius);font-size:13.5px;margin-bottom:16px;
  border:1.5px solid;
}
.alert-error{background:#F7E6E2;border-color:var(--stamp);color:var(--stamp-dark);}
.alert-success{background:#EAF0E5;border-color:var(--folder-green,#4B5E45);color:#3A4A36;}

.auth-links{margin-top:16px;font-size:13px;text-align:center;color:var(--ink-soft);}
.auth-links a{color:var(--stamp);font-weight:600;}

.form-section{display:none;}
.form-section.active{display:block;}

/* ===== Profile form ===== */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 16px;}
.section-title{
  font-weight:700;font-size:14px;margin:22px 0 12px;padding-top:16px;
  border-top:1px dashed var(--ledger);color:var(--ink-soft);
  text-transform:uppercase;letter-spacing:.04em;
}
.section-title:first-child{border-top:none;padding-top:0;margin-top:0;}
.field textarea{
  width:100%;padding:10px 12px;border:1.5px solid var(--ink);border-radius:var(--radius);
  font-family:'Sarabun',sans-serif;font-size:15px;background:#fff;resize:vertical;min-height:70px;
}
.field input[readonly]{background:var(--paper-2);color:var(--ink-soft);}

@media (max-width:560px){
  .form-grid{grid-template-columns:1fr;}
}

/* ===== Order history ===== */
.order-card{
  background:var(--card);border:1px solid var(--ink);border-radius:var(--radius);
  margin-bottom:14px;box-shadow:3px 3px 0 var(--ledger);
}
.order-head{
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px;
  padding:14px 16px;cursor:pointer;
}
.order-billno{font-family:'Space Mono',monospace;font-weight:700;font-size:14px;}
.order-date{font-size:12px;color:var(--ink-soft);margin-top:2px;}
.order-total{font-family:'Space Mono',monospace;font-weight:700;font-size:17px;color:var(--stamp);}
.order-items{border-top:1px dashed var(--ledger);padding:10px 16px 14px;}
.order-item-row{
  display:flex;justify-content:space-between;gap:10px;font-size:13.5px;padding:6px 0;
  border-bottom:1px dotted var(--ledger);
}
.order-item-row:last-child{border-bottom:none;}
.order-item-name{flex:1;}
.order-item-qty{color:var(--ink-soft);font-family:'Space Mono',monospace;white-space:nowrap;}
.order-memo{font-size:12px;color:var(--ink-soft);margin-top:6px;font-style:italic;}

/* ===== Cart ===== */
.cart-row{
  display:flex;align-items:center;gap:14px;background:var(--card);
  border:1px solid var(--ink);border-radius:var(--radius);padding:12px 14px;margin-bottom:10px;
  box-shadow:2px 2px 0 var(--ledger);
}
.cart-row-thumb{
  width:56px;height:56px;flex-shrink:0;border:1px dashed var(--ledger);border-radius:2px;
  display:flex;align-items:center;justify-content:center;overflow:hidden;
  background:repeating-linear-gradient(45deg, var(--paper-2), var(--paper-2) 5px, var(--card) 5px, var(--card) 10px);
}
.cart-row-thumb img{width:100%;height:100%;object-fit:cover;}
.cart-row-name{flex:1;font-size:14px;font-weight:600;}
.cart-row-price{font-family:'Space Mono',monospace;font-size:13px;color:var(--ink-soft);white-space:nowrap;}
.cart-qty{display:flex;align-items:center;gap:6px;}
.cart-qty button{
  width:28px;height:28px;border:1.5px solid var(--ink);background:var(--card);border-radius:4px;
  font-weight:700;cursor:pointer;line-height:1;
}
.cart-qty input{
  width:44px;text-align:center;border:1.5px solid var(--ink);border-radius:4px;padding:4px 0;
  font-family:'Space Mono',monospace;font-size:14px;
}
.cart-row-remove{color:var(--stamp);cursor:pointer;font-size:13px;white-space:nowrap;background:none;border:none;}
.cart-summary{
  background:var(--ink);color:var(--paper);border-radius:var(--radius);padding:16px 18px;
  display:flex;justify-content:space-between;align-items:center;margin:18px 0;
}
.cart-summary .amt{font-family:'Space Mono',monospace;font-size:22px;font-weight:700;}
@media (max-width:560px){
  .cart-row{flex-wrap:wrap;}
  .cart-row-name{flex-basis:100%;order:1;}
  .cart-row-thumb{order:0;}
}

/* ===== Cart count badge (บนปุ่มตะกร้า) ===== */
.cart-count-badge{
  position:absolute;top:-8px;right:-8px;
  background:var(--ink);color:var(--paper);
  min-width:20px;height:20px;padding:0 4px;
  border-radius:999px;border:2px solid var(--paper);
  display:inline-flex;align-items:center;justify-content:center;
  font-family:'Space Mono',monospace;font-size:11px;font-weight:700;
}
.cart-count-badge.bump{ animation: cartBump .25s ease; }
@keyframes cartBump {
  0%{ transform:scale(1); }
  50%{ transform:scale(1.35); }
  100%{ transform:scale(1); }
}

/* ===== Budget bar ===== */
.budget-bar{
  background:var(--card);border:1px solid var(--ink);border-radius:var(--radius);
  padding:12px 16px;margin-bottom:16px;display:flex;justify-content:space-between;
  align-items:center;flex-wrap:wrap;gap:10px;box-shadow:2px 2px 0 var(--ledger);
}
.budget-set{display:flex;align-items:center;gap:8px;}
.budget-set label{font-size:13px;font-weight:600;white-space:nowrap;}
.budget-set input{
  width:120px;padding:7px 10px;border:1.5px solid var(--ink);border-radius:var(--radius);
  font-family:'Space Mono',monospace;font-size:14px;
}
.budget-set button{
  border:1.5px solid var(--ink);background:var(--ink);color:var(--paper);
  padding:7px 14px;border-radius:var(--radius);font-size:13px;font-weight:600;cursor:pointer;
}
.budget-figures{display:flex;gap:16px;font-size:13px;flex-wrap:wrap;}
.budget-figures b{font-family:'Space Mono',monospace;}
.budget-remaining{font-family:'Space Mono',monospace;font-weight:700;color:var(--folder-green,#4B5E45);}
.budget-remaining.over{color:var(--stamp);}
.filter-chip{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;
  border:1.5px solid var(--ink);border-radius:20px;padding:6px 12px;cursor:pointer;
  background:var(--card);white-space:nowrap;
}
.filter-chip.active{background:var(--ink);color:var(--paper);}