*{box-sizing:border-box;margin:0;padding:0}
:root{
  /* Phong cách Board.fun: nền kem, mực đen, khối màu kẹo phẳng, bo tròn to */
  --bg:#fffef1; --panel:#ffffff; --ink:#15140f; --ink-2:#6f6d60;
  --mint:#32c992; --blue:#2760f6; --pink:#e11d48; --cream:#edede0;
  --amber:#f2cd0f; --purple:#6d13ec; --orange:#f48813;
  --line:#e7e2cf; --radius:22px;
  font-size:16px;
}
body{font-family:'Be Vietnam Pro',system-ui,sans-serif;color:var(--ink);background:var(--bg)}
#app{display:flex;min-height:100vh}
#panel{width:360px;flex:none;padding:18px;overflow-y:auto;max-height:100vh;display:flex;flex-direction:column;gap:12px;background:var(--panel);border-right:1px solid var(--line)}
.brand-row{display:flex;align-items:center;gap:11px}
.brand-logo{width:40px;height:40px;flex:none}
.brand-row h1{white-space:nowrap}
.brand h1{font-family:'Baloo 2',cursive;font-weight:800;font-size:1.7rem;letter-spacing:.3px;color:var(--ink)}
.brand p{color:var(--ink-2);font-size:.85rem}
.card{background:#faf7ec;border:1px solid var(--line);border-radius:var(--radius);padding:14px}
.lbl{display:block;font-family:'Baloo 2',cursive;font-weight:700;font-size:1rem;margin-bottom:8px}
.lbl-sm{font-size:.78rem;font-weight:600;color:var(--ink-2);margin:10px 0 6px}
.lbl-opt{font-weight:400;color:var(--ink-2);opacity:.7}
.hint{font-size:.78rem;color:var(--ink-2);margin:-4px 0 8px}
#textInput{width:100%;padding:10px 12px;font-family:'Baloo 2',cursive;font-size:1.4rem;font-weight:700;letter-spacing:4px;text-transform:uppercase;
  border:2px solid var(--line);border-radius:12px;outline:none;color:var(--ink)}
#textInput:focus{border-color:var(--blue)}
.row{display:flex;align-items:center}
.row.between{justify-content:space-between;margin-top:10px}
.row.gap{gap:8px;margin-top:10px;flex-wrap:wrap}
.stepper{display:flex;align-items:center;gap:10px}
.stepper button{width:34px;height:34px;border-radius:50%;border:none;background:var(--ink);color:#fff;font-size:1.2rem;cursor:pointer}
.stepper button:hover{background:#46527a}
.stepper span{font-family:'Baloo 2',cursive;font-weight:800;font-size:1.2rem;min-width:24px;text-align:center}

/* Slot chips — hình block răng cưa như sản phẩm thật */
#slots{display:flex;flex-wrap:wrap;gap:10px}
.slot{position:relative;width:64px;height:64px;border:none;cursor:pointer;border-radius:16px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:inset 0 -4px 0 rgba(0,0,0,.12), 0 2px 6px rgba(44,53,80,.15);
  transition:transform .12s}
.slot:hover{transform:translateY(-2px) scale(1.04)}
.slot .cap{width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-family:'Baloo 2',cursive;font-weight:800;font-size:1.5rem;box-shadow:inset 0 -3px 0 rgba(0,0,0,.15)}
.slot .idx{position:absolute;top:-6px;left:-6px;background:var(--ink);color:#fff;font-size:.62rem;font-weight:700;
  width:18px;height:18px;border-radius:50%;display:flex;align-items:center;justify-content:center}

.seg{display:flex;background:#efe9d6;border-radius:12px;padding:4px;gap:4px}
.seg-btn{flex:1;padding:9px;border:none;border-radius:9px;background:transparent;font-family:'Baloo 2',cursive;font-weight:700;font-size:.95rem;color:var(--ink-2);cursor:pointer}
.seg-btn.active{background:#fff;color:var(--ink);box-shadow:0 1px 4px rgba(44,53,80,.18)}

.summary pre{font-family:'Be Vietnam Pro',sans-serif;font-size:.8rem;white-space:pre-wrap;background:#fff;border:1px dashed var(--line);border-radius:10px;padding:10px;margin-bottom:10px;color:var(--ink)}
/* Giỏ hàng */
.cart-section{margin-top:12px;border-top:1px solid var(--line);padding-top:10px}
.cart-section.hidden{display:none}
.cart-head{font-family:'Baloo 2',cursive;font-weight:700;font-size:.9rem;margin-bottom:8px}
.cart-item{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:6px;margin-bottom:8px}
.cart-thumb{width:52px;height:52px;flex:none;border-radius:9px;object-fit:cover;background:#f3efe0}
.cart-info{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}
.cart-info b{font-size:.82rem;font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cart-info span{font-size:.8rem;color:var(--pink);font-weight:600}
.cart-acts{display:flex;gap:6px;flex:none}
.cart-view{border:1.5px solid var(--line);background:#fff;border-radius:8px;padding:6px 10px;font-size:.76rem;font-weight:600;color:var(--ink);cursor:pointer}
.cart-view:hover{border-color:var(--blue)}
.cart-del{border:none;background:#fbeaec;color:#c0392b;border-radius:8px;width:30px;cursor:pointer;font-size:.8rem}
/* Toast */
#toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%) translateY(20px);z-index:100;
  background:var(--ink);color:#fff;padding:11px 18px;border-radius:999px;font-size:.85rem;font-weight:600;
  box-shadow:0 8px 24px rgba(20,26,44,.3);opacity:0;pointer-events:none;transition:opacity .22s,transform .22s}
#toast.on{opacity:1;transform:translateX(-50%) translateY(0)}
.btn-primary{width:100%;padding:16px;border:none;border-radius:18px;background:var(--mint);color:#fff;font-family:'Baloo 2',cursive;font-weight:800;font-size:1.1rem;cursor:pointer;box-shadow:0 8px 20px -5px rgba(50,201,146,.6);transition:transform .14s,filter .16s,box-shadow .16s}
.btn-primary:hover{filter:brightness(1.05);transform:translateY(-2px);box-shadow:0 12px 26px -6px rgba(50,201,146,.65)}
.btn-primary:active{transform:translateY(0);filter:brightness(.98)}
.btn-primary.sm{width:auto;padding:8px 14px;font-size:.85rem;box-shadow:0 2px 0 #c74763}
.btn-ghost{padding:10px;border:1.5px dashed #d8d2bd;border-radius:12px;background:transparent;color:var(--ink-2);font-size:.82rem;cursor:pointer;width:100%}
.btn-ghost:hover{border-color:var(--blue);color:var(--ink)}
.btn-ghost.sm{width:auto;padding:8px 10px;font-size:.76rem}
.btn-ghost.danger{color:#c0392b;border-color:#e7b4ae}

/* Viewport */
#viewport{flex:1;position:relative;min-height:100vh;background:radial-gradient(circle at 50% 30%, #fffef1 0%, #f3efe0 70%, #ebe5d2 100%)}
#c3d{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none}
#cube{position:absolute;top:14px;right:14px;width:100px;height:100px;cursor:pointer}
/* Nút toàn màn hình — phóng khung 3D lấp kín màn (chạy cả trên iPhone Safari vốn không có Fullscreen API) */
.fs-btn{position:absolute;top:14px;left:14px;z-index:6;width:40px;height:40px;border:none;border-radius:12px;
  background:rgba(255,255,255,.9);backdrop-filter:blur(4px);box-shadow:0 2px 8px rgba(44,53,80,.15);
  color:var(--ink);font-size:1.15rem;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center}
.fs-btn:hover{background:var(--ink);color:#fff}
body.immersive #panel{display:none}
body.immersive #viewport{position:fixed;inset:0;width:100vw;height:100vh;height:100dvh;min-height:0;z-index:40}
body.immersive #app{display:block}
/* Toggle kiểu hiển thị cho khách — ngay dưới cube */
#viewModeToggle{position:absolute;top:120px;right:14px;display:flex;gap:0;background:rgba(255,255,255,.9);backdrop-filter:blur(4px);border-radius:999px;padding:3px;box-shadow:0 2px 8px rgba(44,53,80,.15)}
#viewModeToggle button{border:none;background:transparent;border-radius:999px;padding:6px 11px;font-family:'Baloo 2',cursive;font-weight:700;font-size:.76rem;color:var(--ink-2);cursor:pointer;white-space:nowrap}
#viewModeToggle button.active{background:var(--ink);color:#fff}
#viewBtns{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);display:flex;gap:8px;flex-wrap:wrap;justify-content:center}
#viewBtns button{padding:8px 14px;border:none;border-radius:999px;background:rgba(255,255,255,.9);backdrop-filter:blur(4px);
  color:var(--ink);font-family:'Baloo 2',cursive;font-weight:700;font-size:.85rem;cursor:pointer;box-shadow:0 2px 8px rgba(44,53,80,.15)}
#viewBtns button:hover{background:var(--ink);color:#fff}
#loading{position:absolute;inset:0;display:flex;flex-direction:column;gap:16px;align-items:center;justify-content:center;font-family:'Baloo 2',cursive;font-weight:700;font-size:1.1rem;color:var(--ink-2);background:rgba(238,243,248,.7);pointer-events:none;opacity:0;transition:opacity .2s}
.loading-logo{width:76px;height:76px;animation:logoPulse 1.4s ease-in-out infinite}
@keyframes logoPulse{0%,100%{transform:scale(1);opacity:.75}50%{transform:scale(1.08);opacity:1}}
#loading.on{opacity:1}

/* Modals */
.modal{position:fixed;inset:0;background:rgba(30,38,60,.45);display:flex;align-items:center;justify-content:center;z-index:50;padding:16px}
.modal.hidden{display:none}
.modal-box{background:#fff;border-radius:20px;padding:20px;width:min(420px,100%);max-height:88vh;overflow-y:auto;box-shadow:0 16px 50px rgba(20,26,44,.3)}
.modal-box.wide{width:min(520px,100%)}

/* ---- Bảng chỉnh block: KHÔNG che sản phẩm (giữ demo luôn thấy được khi đổi màu/chữ) ---- */
/* Overlay không bắt chuột -> vẫn xoay/zoom được mô hình khi sheet mở; chỉ hộp mới bắt chuột */
#slotPop{background:transparent;padding:0;pointer-events:none}
#slotPop .modal-box{pointer-events:auto;position:relative;box-shadow:0 -6px 34px rgba(20,26,44,.20)}
/* Desktop: ngăn kéo trái, canvas lớn bên phải luôn trống để xem trực tiếp */
@media (min-width:861px){
  #slotPop{justify-content:flex-start;align-items:stretch}
  #slotPop .modal-box{width:360px;height:100vh;max-height:100vh;border-radius:0;overflow-y:auto;
    animation:sheetInLeft .26s cubic-bezier(.22,.61,.36,1)}
  @keyframes sheetInLeft{from{transform:translateX(-101%)}to{transform:none}}
}
.modal-box h3{font-family:'Baloo 2',cursive;font-weight:800}
.x{border:none;background:#eef1f7;width:30px;height:30px;border-radius:50%;cursor:pointer;font-size:.85rem}
#charGrid,#availGrid{display:grid;grid-template-columns:repeat(8,1fr);gap:6px}
/* Phần Ký tự gập được để chọn màu nhanh hơn */
.char-head{display:flex;align-items:center;justify-content:space-between;margin:10px 0 6px}
.char-toggle{display:flex;align-items:center;gap:7px;border:1.5px solid var(--line);background:#fff;
  border-radius:10px;padding:4px 10px 4px 6px;cursor:pointer;font-size:.8rem;color:var(--ink-2)}
.char-toggle b{font-family:'Baloo 2',cursive;font-weight:800;font-size:1.15rem;color:var(--ink);
  min-width:26px;height:26px;display:flex;align-items:center;justify-content:center;
  background:#f2f5fa;border-radius:8px}
.char-toggle .ct-chev{transition:transform .2s}
.char-toggle[aria-expanded="true"] .ct-chev{transform:rotate(180deg)}
#charGrid.collapsed{display:none}
#charGrid{max-height:30vh;overflow-y:auto;overflow-x:hidden;padding:2px}
#charGrid button,#availGrid button{aspect-ratio:1;border:1.5px solid var(--line);border-radius:10px;background:#fff;font-family:'Baloo 2',cursive;font-weight:800;font-size:1rem;cursor:pointer;display:flex;align-items:center;justify-content:center}
#charGrid button:hover,#availGrid button:hover{border-color:var(--blue)}
#charGrid button.sel{border-color:var(--pink);background:#fff0f3}
#availGrid button.sel{border-color:#3d9970;background:#e9f9f0;box-shadow:inset 0 0 0 1px #3d9970}
/* Keycap/màu ngoài phạm vi -> xám mờ, khóa */
#charGrid button.dim,.swatches button.dim{opacity:.28;filter:grayscale(1);cursor:not-allowed}
#charGrid button.dim:hover{border-color:var(--line)}
/* Trình thiết lập phạm vi màu chữ */
.dot-inline{display:inline-block;width:16px;height:16px;border-radius:50%;margin-right:8px;vertical-align:-2px;box-shadow:inset 0 0 0 1.5px rgba(44,53,80,.25)}
.step-title{font-family:'Baloo 2',cursive;font-weight:700;font-size:.92rem;margin:14px 0 8px}
.radio-row{display:flex;gap:10px;align-items:flex-start;padding:9px 10px;border:1.5px solid var(--line);border-radius:10px;margin-bottom:6px;cursor:pointer;font-size:.84rem}
.radio-row:has(input:checked){border-color:var(--blue);background:#f2f7fd}
.radio-row input{margin-top:2px}
#availStep2.disabled-step{opacity:.4;pointer-events:none}
#availSave{margin-top:10px}
.admin-color .scope{border:1.5px solid var(--line);background:#fff;border-radius:8px;padding:5px 9px;font-size:.72rem;color:var(--ink-2);cursor:pointer;white-space:nowrap}
.admin-color .scope.limited{border-color:#3d9970;color:#2c7a58;background:#e9f9f0;font-weight:600}
.admin-color .scope:hover{border-color:var(--blue)}
.swatches{display:flex;flex-wrap:wrap;gap:8px}
.swatches button{width:38px;height:38px;border-radius:50%;border:3px solid transparent;cursor:pointer;box-shadow:inset 0 -3px 0 rgba(0,0,0,.15)}
.swatches button.sel{border-color:var(--ink)}
.swatches button span{display:none}
#adminColors,#adminLetterColors{display:flex;flex-direction:column;gap:6px;margin-bottom:8px}
.admin-color{display:flex;align-items:center;gap:10px;background:#faf7ec;border:1px solid var(--line);border-radius:10px;padding:6px 10px}
.admin-color .dot{width:26px;height:26px;border-radius:50%;flex:none;box-shadow:inset 0 -2px 0 rgba(0,0,0,.15)}
.admin-color input[type=text]{flex:1;border:none;background:transparent;font-family:inherit;font-size:.85rem;outline:none}
.admin-color button{border:none;background:transparent;color:#c0392b;cursor:pointer;font-size:.9rem}
#newColorName{flex:1;padding:9px 10px;border:1.5px solid var(--line);border-radius:10px;font-family:inherit;outline:none}
#newColorHex,#letterColor{width:46px;height:38px;border:1.5px solid var(--line);border-radius:10px;padding:2px;background:#fff;cursor:pointer}
.btn-primary.alt{background:#5a8fd0;box-shadow:0 2px 0 #43709f}
/* Gradient editor */
#gradWrap{position:relative;margin:8px 0 26px}
#gradBar{height:34px;border-radius:8px;border:1px solid var(--line);cursor:copy}
#gradStops{position:absolute;left:0;right:0;top:100%;height:22px}
.grad-stop{position:absolute;top:2px;width:18px;height:18px;border-radius:50%;border:3px solid #fff;
  box-shadow:0 0 0 1.5px #9aa7bf,0 2px 5px rgba(44,53,80,.3);cursor:grab;padding:0;touch-action:none}
.grad-stop.sel{box-shadow:0 0 0 2.5px var(--ink),0 2px 5px rgba(44,53,80,.3)}
.mini.col{flex-direction:column;align-items:flex-start;min-width:0;gap:4px}
.mini.col input{width:90px}
#stopColor{width:60px;height:34px;border:1.5px solid var(--line);border-radius:8px;padding:2px;background:#fff;cursor:pointer}
#stopPos{padding:7px;border:1.5px solid var(--line);border-radius:8px;font-family:inherit}
.mini{display:flex;align-items:center;gap:8px;font-size:.78rem;color:var(--ink-2);flex:1;min-width:220px}
.mini2{display:flex;align-items:center;gap:8px;font-size:.78rem;color:var(--ink-2)}
.mini2 input[type=color]{width:44px;height:32px;border:1.5px solid var(--line);border-radius:8px;padding:2px;background:#fff;cursor:pointer}
.mini span{min-width:34px}
.mini input[type=range]{flex:1}
.mini span{min-width:44px;font-weight:700;color:var(--ink)}

/* Checkout */
.hint-inline{font-weight:400;color:var(--ink-2);font-size:.7rem}
.addr-row{margin-top:0}
.addr-row select{flex:1;min-width:0}
.addr-preview{margin-top:8px;padding:9px 11px;border-radius:10px;background:#eef7f1;border:1px solid #bfe3cd;font-size:.78rem;color:#2c7a58}
.addr-preview.hidden{display:none}
.field{margin-bottom:4px}
.field input,.field textarea,.field select{width:100%;padding:10px 12px;border:1.5px solid var(--line);border-radius:10px;font-family:inherit;font-size:.9rem;outline:none;background:#fff;resize:vertical}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--blue)}
.mini-summary{background:#faf7ec;border:1px dashed var(--line);border-radius:10px;padding:10px;font-size:.78rem;white-space:pre-wrap;margin:10px 0;color:var(--ink)}
/* Admin: nhóm gập/mở theo bộ phận */
.admin-group{border:1.5px solid var(--line);border-radius:12px;margin-bottom:10px;background:#fff;overflow:hidden}
.admin-group summary{cursor:pointer;padding:11px 14px;font-family:'Baloo 2',cursive;font-weight:700;font-size:.95rem;background:#faf7ec;user-select:none}
.admin-group[open] summary{border-bottom:1px solid var(--line)}
.admin-group > :not(summary){margin:10px 12px}
.pal-list{display:flex;flex-direction:column;gap:6px;margin-bottom:8px}
.sub-box{border:1.5px dashed #c6d0e2;border-radius:10px;padding:10px 12px;margin-bottom:10px;background:#fbfcfe}
.sub-title{font-family:'Baloo 2',cursive;font-weight:700;font-size:.86rem;margin-bottom:8px;color:var(--ink)}
/* Ô màu chữ đi kèm trong hàng màu keycap (admin) */
.lt-mini{display:flex;gap:4px;align-items:center;background:#f2f5fa;border-radius:999px;padding:3px 5px}
.lt-pick{width:20px;height:20px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1px #c2cde0;cursor:pointer;padding:0}
.lt-pick.sel{box-shadow:0 0 0 2px var(--ink)}
/* Chấm màu chữ trên swatch keycap của khách */
.swatches button{position:relative}
.lt-dot{position:absolute;right:2px;bottom:2px;width:12px;height:12px;border-radius:50%;border:1.5px solid rgba(44,53,80,.35);pointer-events:none}
.acc-hint{font-size:.74rem;color:var(--ink-2);margin-top:6px}

/* Phụ kiện */
.acc-row{border:1.5px solid var(--line);border-radius:12px;padding:10px 12px;margin-bottom:8px;background:#fff}
.acc-head{display:flex;align-items:center;justify-content:space-between}
.acc-toggle{display:flex;align-items:center;gap:9px;cursor:pointer}
.acc-toggle input{width:18px;height:18px;accent-color:var(--pink);cursor:pointer}
.acc-name{font-family:'Baloo 2',cursive;font-weight:700;font-size:.92rem}
.acc-price{font-size:.8rem;font-weight:700;color:var(--pink)}
.acc-soon{font-size:.72rem;background:#eef1f7;color:var(--ink-2);border-radius:999px;padding:3px 10px;font-weight:600}
.acc-colors{margin-top:10px}
.acc-colors.hidden{display:none}
.dim-row{opacity:.55}

/* Tổng đơn nhanh trên sidebar */
.quick-total{display:flex;justify-content:space-between;align-items:baseline;flex-wrap:wrap;gap:4px;
  background:#fff;border:1.5px solid var(--line);border-radius:10px;padding:9px 12px;margin-bottom:10px;font-size:.8rem;color:var(--ink-2)}
.quick-total b{font-family:'Baloo 2',cursive;font-size:1.05rem;color:var(--pink)}
/* Bảng giá chỉ-đọc trong admin (nguồn: sheet KEY) */
.price-info{background:#faf7ec;border:1px dashed var(--line);border-radius:10px;padding:9px 12px;font-size:.8rem;color:var(--ink);white-space:pre-wrap}

.price-box{background:#fff;border:1.5px solid var(--line);border-radius:12px;padding:4px 12px;margin:10px 0}
.price-row{display:flex;justify-content:space-between;padding:8px 0;font-size:.86rem;color:var(--ink);border-bottom:1px dashed var(--line)}
.price-row:last-child{border-bottom:none}
.price-row.hidden{display:none}
.price-row.total{font-family:'Baloo 2',cursive;font-weight:800;font-size:1.02rem}
.price-row.total span:last-child{color:var(--pink)}
/* 2 card chọn Đơn vị vận chuyển — chọn dạng khối, hiện giá từng hãng để so sánh */
.carrier-cards{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.carrier-card{position:relative;display:flex;flex-direction:column;gap:3px;align-items:flex-start;
  padding:13px 15px;border:2px solid var(--line);border-radius:16px;background:#fff;cursor:pointer;
  text-align:left;font-family:inherit;transition:border-color .16s,background .16s,box-shadow .16s,transform .12s}
.carrier-card:hover{border-color:#cfc9ad;transform:translateY(-1px)}
.carrier-card:active{transform:translateY(0)}
.carrier-card:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.carrier-card .cc-name{font-family:'Baloo 2',cursive;font-weight:800;font-size:1.05rem;color:var(--ink);line-height:1.1}
.carrier-card .cc-price{font-size:.86rem;font-weight:800;color:var(--ink-2);font-variant-numeric:tabular-nums}
.carrier-card .cc-tick{position:absolute;top:11px;right:11px;width:18px;height:18px;border-radius:50%;
  border:2px solid var(--line);background:#fff;transition:border-color .16s,background .16s}
.carrier-card.selected{border-color:var(--blue);background:#eef3ff;box-shadow:0 6px 16px -6px rgba(39,96,246,.4)}
.carrier-card.selected .cc-price{color:var(--blue)}
.carrier-card.selected .cc-tick{border-color:var(--blue);background:var(--blue);box-shadow:inset 0 0 0 3px #fff}
.err{background:#fff1f2;color:#b42318;border-radius:10px;padding:10px;font-size:.82rem;margin-bottom:10px}
.err.hidden{display:none}
.modal-box.done{text-align:center}
/* QR chuyển khoản */
.done-qr{margin:14px 0;padding:16px;border:1px solid var(--line);border-radius:14px;background:#fff;text-align:center}
.done-qr.hidden{display:none}
.qr-title{font-family:'Baloo 2',cursive;font-weight:700;font-size:.95rem;margin-bottom:10px}
.qr-img{display:block;margin:0 auto;width:300px;max-width:92%;height:auto;image-rendering:pixelated;
  padding:12px;background:#fff;border:1px solid var(--line);border-radius:12px}
.qr-line{font-size:.84rem;color:var(--ink);margin-top:8px}
.qr-note{font-size:.76rem;color:var(--ink-2);margin-top:8px}
.pay-upload{display:block;text-align:center;margin-top:10px;padding:11px;border:1.5px dashed #c6d0e2;border-radius:12px;
  font-size:.84rem;color:var(--ink-2);cursor:pointer}
.pay-upload:hover{border-color:var(--blue);color:var(--ink)}
.done-icon{font-size:2.6rem;margin-bottom:6px}
.modal-box.done p{color:var(--ink-2);font-size:.88rem;margin:8px 0 14px;white-space:pre-wrap}
button:disabled{opacity:.55;cursor:not-allowed}

@media (max-width:860px){
  #app{flex-direction:column-reverse}
  #panel{width:100%;max-height:none;border-right:none;border-top:1px solid var(--line)}
  #viewport{min-height:60vh;height:60vh;transition:height .28s cubic-bezier(.22,.61,.36,1)}
  /* Khi mở bảng chỉnh block: GHIM sân khấu sản phẩm cứng ở nửa trên (fixed) — không bao giờ cuộn đi,
     luôn cạnh sheet nửa dưới, dù trước đó khách đã cuộn xuống panel để chạm block. */
  body.editing-slot{overflow:hidden}
  body.editing-slot #viewport{position:fixed;top:0;left:0;right:0;height:60vh;min-height:60vh;z-index:45;
    box-shadow:0 10px 24px -12px rgba(20,26,44,.25)}
  body.editing-slot #viewBtns,body.editing-slot #fsBtn{display:none} /* gọn sân khấu khi đang chỉnh */
  #slotPop{align-items:flex-end}
  #slotPop .modal-box{width:100%;max-width:100%;max-height:40vh;border-radius:22px 22px 0 0;
    padding-top:14px;padding-bottom:calc(16px + env(safe-area-inset-bottom));
    animation:sheetInUp .28s cubic-bezier(.22,.61,.36,1)}
  #slotPop .modal-box::before{content:"";position:absolute;top:7px;left:50%;transform:translateX(-50%);
    width:38px;height:4px;border-radius:2px;background:#d3dbe8}
  @keyframes sheetInUp{from{transform:translateY(101%)}to{transform:none}}
  #cube{width:72px;height:72px;top:10px;right:10px}
  #viewModeToggle{top:88px;right:10px;padding:2px}
  #viewModeToggle button{padding:5px 9px;font-size:.72rem}
  /* Nút góc nhìn: 1 hàng trượt ngang dính đáy khung 3D, không đè lên mô hình */
  #viewBtns{
    left:0;right:0;bottom:0;transform:none;
    flex-wrap:nowrap;justify-content:flex-start;
    overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none;
    gap:6px;padding:8px 10px calc(8px + env(safe-area-inset-bottom));
    background:linear-gradient(to top, rgba(238,243,248,.95) 55%, rgba(238,243,248,0));
  }
  #viewBtns::-webkit-scrollbar{display:none}
  #viewBtns button{flex:none;padding:7px 12px;font-size:.8rem;box-shadow:0 1px 4px rgba(44,53,80,.18)}
}
button:focus-visible,input:focus-visible{outline:3px solid #7fa8d9;outline-offset:2px}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}