:root{
  --green:#3AA24A; --green-dark:#1F7A38; --green-darker:#145227; --green-light:#EAF5EC;
  --orange:#F5821F; --orange-dark:#E06A0C;
  --ink:#23301F; --muted:#6B7A66; --line:#E7E4DA; --bg:#F4F6F2;
  --radius:12px; --font:"Be Vietnam Pro","Segoe UI",system-ui,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font);color:var(--ink);background:var(--bg)}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer}
a{color:inherit;text-decoration:none}

/* Nut */
.btn{display:inline-flex;align-items:center;gap:.4rem;padding:.6rem 1.1rem;border-radius:8px;border:none;font-weight:700;font-size:.9rem;transition:.2s}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:var(--orange-dark)}
.btn-green{background:var(--green);color:#fff}
.btn-green:hover{background:var(--green-dark)}
.btn-ghost{background:#fff;border:1.5px solid var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--green)}
.btn-danger{background:#fdeaea;color:#c0392b}
.btn-danger:hover{background:#f8d7d7}
.btn-block{width:100%;justify-content:center;padding:.8rem}
.btn-sm{padding:.4rem .7rem;font-size:.82rem;border-radius:6px}

/* ===== Login ===== */
.login-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1rem;background:linear-gradient(135deg,var(--green),var(--green-darker))}
.login-box{background:#fff;padding:2.5rem 2.2rem;border-radius:18px;width:min(400px,100%);box-shadow:0 30px 70px rgba(0,0,0,.25);display:flex;flex-direction:column;gap:.5rem;text-align:center}
.login-logo{width:auto;height:96px;object-fit:contain;margin:0 auto .3rem}
.login-box h1{font-size:1.4rem;color:var(--green-darker)}
.login-sub{color:var(--muted);font-size:.9rem;margin-bottom:1rem}
.login-box label{text-align:left;font-size:.85rem;font-weight:600;color:var(--ink);display:flex;flex-direction:column;gap:.35rem;margin-bottom:.8rem}
.login-box input{padding:.7rem .8rem;border:1.5px solid var(--line);border-radius:8px;font-size:1rem}
.login-box input:focus{outline:none;border-color:var(--green)}
.login-error{color:#c0392b;font-size:.85rem;min-height:1.1rem;text-align:left}

/* ===== Layout ===== */
.admin-app{display:flex;min-height:100vh}
.sidebar{width:250px;background:var(--green-darker);color:#dfe9d8;display:flex;flex-direction:column;position:fixed;inset:0 auto 0 0;z-index:30}
.sidebar-brand{display:flex;align-items:center;gap:.6rem;padding:1.2rem 1.3rem;border-bottom:1px solid rgba(255,255,255,.12)}
.sidebar-brand img{width:46px;height:46px;object-fit:contain}
.logo-chip{background:#fff;border-radius:10px;padding:4px}
.sidebar-brand span{font-weight:800;color:#fff;line-height:1.1;display:flex;flex-direction:column}
.sidebar-brand small{font-weight:500;font-size:.72rem;opacity:.7}
.sidebar-nav{padding:.8rem;display:flex;flex-direction:column;gap:.2rem;flex:1}
.side-link{display:flex;align-items:center;gap:.7rem;background:none;border:none;color:#cfe0c8;padding:.7rem .8rem;border-radius:8px;font-size:.92rem;font-weight:600;text-align:left;width:100%;transition:.15s}
.side-link i{font-style:normal;font-size:1.05rem}
.side-link:hover{background:rgba(255,255,255,.08);color:#fff}
.side-link.active{background:var(--orange);color:#fff}
.sidebar-foot{padding:.8rem;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-direction:column;gap:.2rem}
.side-link.small{font-size:.85rem;padding:.55rem .8rem}

.admin-main{margin-left:250px;flex:1;min-width:0;display:flex;flex-direction:column}
.admin-top{background:#fff;border-bottom:1px solid var(--line);padding:1rem 1.6rem;display:flex;align-items:center;gap:1rem;position:sticky;top:0;z-index:20}
.admin-top h2{font-size:1.25rem;color:var(--green-darker);flex:1}
.admin-user{color:var(--muted);font-size:.9rem}
.mobile-menu{display:none;background:none;border:none;font-size:1.5rem;color:var(--green-dark)}
.admin-body{padding:1.6rem;flex:1}

/* ===== Toolbar + Table ===== */
.toolbar{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:1.2rem;flex-wrap:wrap}
.toolbar .hint{color:var(--muted);font-size:.88rem}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:.9rem}
th,td{padding:.75rem .9rem;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}
th{background:#f7f9f5;font-size:.78rem;text-transform:uppercase;letter-spacing:.4px;color:var(--muted)}
tr:last-child td{border-bottom:none}
tr:hover td{background:#fafcf8}
.cell-img{width:56px;height:56px;object-fit:cover;border-radius:8px;background:var(--green-light)}
.badge{display:inline-block;padding:.15rem .55rem;border-radius:20px;font-size:.75rem;font-weight:700}
.badge-on{background:#e4f6e7;color:var(--green-dark)}
.badge-off{background:#f1f1f1;color:#999}
.badge-star{background:var(--orange);color:#fff}
.row-actions{display:flex;gap:.4rem;justify-content:flex-end}
.empty-state{padding:3rem;text-align:center;color:var(--muted)}
/* Keo tha sap xep */
.col-handle{width:34px;text-align:center;color:#bbb;cursor:grab;font-size:1.15rem;user-select:none}
.col-handle:active{cursor:grabbing}
tr[draggable="true"]{transition:background .15s}
tr.dragging{opacity:.5;background:var(--green-light) !important}
tr[draggable="true"] td{background:inherit}

/* ===== Form ===== */
.entity-form{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.entity-form .full{grid-column:1/-1}
.field{display:flex;flex-direction:column;gap:.35rem}
.field label{font-size:.82rem;font-weight:700;color:var(--ink)}
.field input,.field select,.field textarea{padding:.6rem .7rem;border:1.5px solid var(--line);border-radius:8px;font-size:.95rem;font-family:inherit}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--green)}
.field textarea{resize:vertical;min-height:90px}
.field.check{flex-direction:row;align-items:center;gap:.5rem}
.field.check input{width:18px;height:18px}
.field.check label{font-weight:600}
.img-field{display:flex;gap:.8rem;align-items:center}
.img-preview{width:80px;height:80px;object-fit:cover;border-radius:8px;border:1px solid var(--line);background:var(--green-light);flex:none}
.img-upload{flex:1}
.form-actions{grid-column:1/-1;display:flex;justify-content:flex-end;gap:.6rem;margin-top:.5rem;border-top:1px solid var(--line);padding-top:1rem}

/* Settings form single column */
.settings-form{max-width:760px;display:flex;flex-direction:column;gap:1rem}
.settings-form .field label{font-size:.85rem}

/* ===== Modal ===== */
.modal{position:fixed;inset:0;z-index:100;display:flex;align-items:flex-start;justify-content:center;padding:2rem 1rem;overflow:auto}
.modal[hidden]{display:none}
.modal-backdrop{position:fixed;inset:0;background:rgba(20,30,15,.55)}
.modal-box{position:relative;background:#fff;border-radius:16px;max-width:720px;width:100%;padding:1.8rem;box-shadow:0 30px 80px rgba(0,0,0,.3);margin:auto}
.modal-box h3{color:var(--green-darker);margin-bottom:1.2rem;font-size:1.3rem}
.modal-close{position:absolute;top:.7rem;right:1rem;font-size:1.8rem;border:none;background:none;color:#999;line-height:1}

/* ===== Tin nhan lien he ===== */
.msg-badge{display:inline-block;min-width:18px;padding:0 6px;background:var(--orange);color:#fff;border-radius:20px;font-size:.72rem;font-weight:700;text-align:center;margin-left:auto}
.msg-list{display:flex;flex-direction:column;gap:1rem}
.msg-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:1.1rem 1.3rem}
.msg-card.unread{border-left:4px solid var(--orange);background:#fffdf9}
.msg-top{display:flex;justify-content:space-between;align-items:center;gap:1rem;margin-bottom:.4rem}
.msg-date{color:var(--muted);font-size:.82rem;white-space:nowrap}
.msg-meta{font-size:.9rem;margin-bottom:.6rem;color:var(--green-dark)}
.msg-meta a{color:var(--green-dark);font-weight:600}
.msg-body{background:var(--bg);border-radius:8px;padding:.7rem .9rem;color:#3c4a38;font-size:.92rem;line-height:1.6;margin-bottom:.7rem}
.msg-actions{display:flex;gap:.5rem;justify-content:flex-end}

/* ===== Toast ===== */
.toast{position:fixed;bottom:1.5rem;right:1.5rem;background:var(--green-dark);color:#fff;padding:.9rem 1.3rem;border-radius:10px;font-weight:600;box-shadow:0 10px 30px rgba(0,0,0,.2);z-index:200;font-size:.9rem}
.toast[hidden]{display:none}
.toast.err{background:#c0392b}

/* ===== Responsive ===== */
@media(max-width:820px){
  .sidebar{transform:translateX(-100%);transition:.25s}
  .sidebar.open{transform:none}
  .admin-main{margin-left:0}
  .mobile-menu{display:block}
  .entity-form{grid-template-columns:1fr}
}