/* css/main.css — concept nền trắng, điểm nhấn đỏ (theo logo Trường Thịnh) */
@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@500;600;700&family=IBM+Plex+Sans:wght@400;500;600&display=swap');

:root{
  --paper:#F7F7F8; --panel:#FFFFFF; --ink:#1D1B1A; --ink-soft:#6B6660; --line:#E7E5E2;
  --red:#D0161F; --red-dark:#9E0E15; --red-tint:#FBE7E6;
  --navy:#1B2430;
  --amber:#B8790C; --amber-tint:#FBEEDA;
  --green:#1F7A4D; --green-tint:#E2F1E8;
  --gray-tint:#F1F0EE; --sidebar-w:220px; --topbar-h:56px;
}
*{box-sizing:border-box;}
body{ margin:0; background:var(--paper); color:var(--ink); font-family:'IBM Plex Sans',sans-serif; font-size:14.5px; line-height:1.5; }
h1,h2,h3{ font-family:'Barlow Condensed',sans-serif; font-weight:600; margin:0; }
button{ font-family:inherit; cursor:pointer; }
table{ border-collapse:collapse; width:100%; }
a{ color:var(--red); }
input, select, textarea{ font-family:inherit; font-size:.86rem; padding:7px 10px; border:1px solid var(--line); background:#fff; color:var(--ink); }
:focus-visible{ outline:2px solid var(--red); outline-offset:2px; }

/* ---------- topbar ---------- */
#topbar{
  height:var(--topbar-h); background:var(--navy); color:#fff;
  display:flex; align-items:center; justify-content:space-between; padding:0 18px;
  position:sticky; top:0; z-index:20;
}
#topbar .brand{ display:flex; align-items:center; gap:9px; }
#topbar .brand .dot{ width:8px; height:8px; border-radius:2px; background:var(--red); }
#topbar .brand .name{ font-family:'Barlow Condensed',sans-serif; font-weight:700; font-size:1.15rem; letter-spacing:.02em; }
#topbar .user{ display:flex; align-items:center; gap:12px; font-size:.84rem; }
#topbar .user .role-chip{ background:rgba(255,255,255,.14); padding:2px 9px; border-radius:3px; font-size:.72rem; }
#topbar .user button{ background:none; border:none; color:#C9CDD3; font-size:.82rem; text-decoration:underline; }
#topbar .user button:hover{ color:#fff; }

/* ---------- nút menu 3 gạch (chỉ hiện trên di động, xem @media cuối file) ---------- */
.mobile-menu-btn{ display:none; background:none; border:none; color:#fff; font-size:1.4rem; cursor:pointer; padding:4px 10px; margin-right:8px; order:-1; }

/* ---------- body shell ---------- */
.body-shell{ display:flex; min-height:calc(100vh - var(--topbar-h)); }
.sidebar{
  width:var(--sidebar-w); flex-shrink:0; background:var(--panel); border-right:1px solid var(--line);
  padding:16px 10px; position:sticky; top:var(--topbar-h); height:calc(100vh - var(--topbar-h)); overflow-y:auto;
}
.sidebar .group-label{ font-size:.68rem; letter-spacing:.06em; color:var(--ink-soft); text-transform:uppercase; padding:14px 10px 6px; }
.sidebar .group-label:first-child{ padding-top:2px; }
.nav a{ display:flex; align-items:center; gap:9px; text-decoration:none; color:var(--ink-soft); padding:8px 10px; font-size:.87rem; border-radius:5px; margin-bottom:1px; }
.nav a:hover{ background:var(--gray-tint); color:var(--ink); }
.nav a.active{ background:var(--red-tint); color:var(--red-dark); font-weight:500; }
.nav a .ico{ width:16px; text-align:center; opacity:.8; }

.main{ flex:1; min-width:0; padding:26px 32px 60px; }
.page-head{ display:flex; justify-content:space-between; align-items:flex-end; margin-bottom:20px; flex-wrap:wrap; gap:10px; }
.page-head h1{ font-size:1.8rem; }
.page-head .sub{ color:var(--ink-soft); font-size:.85rem; margin-top:3px; }

/* ---------- common components ---------- */
.stat-row{ display:grid; grid-template-columns:repeat(4,1fr); gap:14px; margin-bottom:22px; }
.stat-card{ background:var(--panel); border:1px solid var(--line); border-radius:8px; border-top:3px solid var(--red); padding:15px 17px; }
.stat-card .lbl{ font-size:.76rem; color:var(--ink-soft); margin-bottom:6px; }
.stat-card .val{ font-family:'Barlow Condensed',sans-serif; font-weight:700; font-size:1.6rem; }

.panel{ background:var(--panel); border:1px solid var(--line); border-radius:8px; overflow-x:auto; }
.panel-head{ padding:12px 16px; border-bottom:1px solid var(--line); display:flex; justify-content:space-between; align-items:center; }
.panel-head h3{ font-size:1.02rem; }
.panel-body{ padding:14px 16px; overflow-x:auto; }

th{ text-align:left; font-size:.73rem; color:var(--ink-soft); background:var(--gray-tint); padding:9px 12px; font-weight:600; text-transform:uppercase; letter-spacing:.03em; }
td{ padding:9px 12px; border-bottom:1px solid var(--line); font-size:.85rem; }
tbody tr:hover{ background:var(--gray-tint); }
td.num, th.num{ text-align:right; font-variant-numeric:tabular-nums; }
tfoot td{ font-weight:600; border-top:2px solid var(--ink); background:var(--gray-tint); }

.badge{ display:inline-block; padding:2px 10px; border-radius:20px; font-size:.71rem; font-weight:600; white-space:nowrap; }
.badge.tam{ background:var(--amber-tint); color:var(--amber); }
.badge.chinh{ background:var(--green-tint); color:var(--green); }
.badge.tre{ background:var(--red-tint); color:var(--red-dark); }

.btn{ background:var(--red); color:#fff; border:none; padding:9px 18px; font-size:.85rem; font-weight:500; border-radius:6px; }
.btn:hover{ background:var(--red-dark); }
.btn.secondary{ background:#fff; color:var(--ink); border:1px solid var(--line); }
.btn.secondary:hover{ border-color:var(--ink-soft); }
.btn.small{ padding:6px 13px; font-size:.78rem; }
.btn:disabled{ opacity:.5; cursor:not-allowed; }

.toolbar{ display:flex; gap:10px; margin-bottom:14px; flex-wrap:wrap; align-items:center; }
.form-row{ display:grid; grid-template-columns:repeat(3,1fr); gap:12px; margin-bottom:12px; }
.form-row label{ display:block; font-size:.76rem; color:var(--ink-soft); margin-bottom:4px; }
.form-row select, .form-row input{ width:100%; border-radius:5px; }
input, select, textarea{ border-radius:5px; }

.note-box{ background:var(--amber-tint); border-left:3px solid var(--amber); padding:10px 14px; font-size:.8rem; color:#5A4200; margin:14px 0; border-radius:0 6px 6px 0; }
.error-box{ background:var(--red-tint); border-left:3px solid var(--red); padding:10px 14px; font-size:.8rem; color:var(--red-dark); margin:14px 0; border-radius:0 6px 6px 0; }
.empty-state{ text-align:center; color:var(--ink-soft); padding:28px; font-size:.86rem; }
.loading{ text-align:center; color:var(--ink-soft); padding:28px; font-size:.86rem; }

/* ---------- modal (core/modal.js) ---------- */
.modal-overlay{ position:fixed; inset:0; background:rgba(20,18,16,.5); display:flex; align-items:center; justify-content:center; z-index:100; padding:20px; }
.modal-dialog{ background:#fff; border-radius:10px; width:100%; max-width:520px; max-height:88vh; overflow-y:auto; box-shadow:0 20px 50px rgba(0,0,0,.25); }
.modal-dialog.wide{ max-width:820px; }
.modal-head{ display:flex; justify-content:space-between; align-items:center; padding:18px 22px; border-bottom:1px solid var(--line); }
.modal-head h3{ font-size:1.2rem; }
.modal-close{ background:none; border:none; font-size:1.4rem; color:var(--ink-soft); line-height:1; padding:2px 6px; }
.modal-close:hover{ color:var(--ink); }
.modal-body{ padding:20px 22px; }
.modal-foot{ padding:14px 22px; border-top:1px solid var(--line); display:flex; justify-content:flex-end; gap:10px; }
.field{ margin-bottom:14px; }
.field label{ display:block; font-size:.78rem; color:var(--ink-soft); margin-bottom:5px; }
.field input, .field select, .field textarea{ width:100%; }
.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:12px; }
.info-box{ background:#EEF3FB; border-left:3px solid #3B6FC4; padding:10px 14px; font-size:.8rem; color:#1F4A8C; margin-bottom:14px; border-radius:0 6px 6px 0; }

/* ---------- attachments ---------- */
.attach-row{ padding:8px 0; display:flex; gap:8px; flex-wrap:wrap; }
.attach-chip{ display:inline-flex; align-items:center; gap:5px; background:var(--gray-tint); border:1px solid var(--line); padding:4px 10px; font-size:.76rem; color:var(--ink-soft); border-radius:20px; cursor:pointer; }
.attach-chip:hover{ border-color:var(--ink-soft); }

/* ---------- approval UI ---------- */
.approval-card{ border:1px solid var(--line); background:#fff; border-radius:8px; margin-bottom:12px; overflow:hidden; }
.approval-top{ padding:11px 16px; border-bottom:1px solid var(--line); display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:10px; background:var(--gray-tint); }
.approval-top .code{ font-family:'Barlow Condensed',sans-serif; font-weight:700; font-size:1.1rem; color:var(--red-dark); }
.approval-top .meta{ font-size:.78rem; color:var(--ink-soft); margin-top:2px; }
.approval-sign{ padding:9px 16px; border-top:1px solid var(--line); font-size:.76rem; color:var(--ink-soft); display:flex; gap:16px; flex-wrap:wrap; }
.approval-confirm-row{ padding:10px 16px; border-top:1px solid var(--line); display:flex; justify-content:flex-end; }
td input[type=number]{ width:90px; padding:4px 6px; }

.item-mini-row{ display:flex; justify-content:space-between; align-items:center; padding:7px 10px; background:var(--gray-tint); margin-bottom:5px; font-size:.83rem; border-radius:5px; }
.approval-extra{ border-top:1px dashed var(--line); background:#FCFBF9; }
.approval-extra-list{ padding:8px 16px 0; }

/* ---------- lớp phủ mờ phía sau menu di động ---------- */
#sidebarBackdrop{ display:none; position:fixed; inset:0; background:rgba(0,0,0,.45); z-index:190; }
#sidebarBackdrop.open{ display:block; }

/* ---------- thanh 4 tab quan trọng, cố định đáy màn hình trên di động ---------- */
#bottomNav{ display:none; }

@media (max-width:960px){ .stat-row{ grid-template-columns:repeat(2,1fr); } .form-row, .field-row{ grid-template-columns:repeat(2,1fr); } }

@media (max-width:700px){
  .mobile-menu-btn{ display:inline-flex; align-items:center; }

  .body-shell{ flex-direction:row; } /* bỏ kiểu xếp chồng cũ — sidebar giờ ẩn hẳn, không đẩy nội dung xuống */

  .sidebar{
    position:fixed; top:0; left:0; bottom:0; z-index:200;
    width:250px; max-width:80vw; height:100vh;
    transform:translateX(-100%);
    transition:transform .22s ease;
    box-shadow:2px 0 16px rgba(0,0,0,.2);
    padding-top:12px;
  }
  .sidebar.open{ transform:translateX(0); }
  .nav{ display:block; } /* giữ danh sách dọc như trên máy tính, không bung ngang nữa */

  .main{ padding:16px 16px 74px; overflow-x:hidden; } /* chừa chỗ thanh 4 tab phía dưới + chặn kéo ngang cả trang */
  .toolbar{ overflow-x:auto; flex-wrap:nowrap; }

  #bottomNav{
    display:flex;
    position:fixed; bottom:0; left:0; right:0; z-index:150;
    background:#fff; border-top:1px solid var(--line);
    height:62px;
  }
  #bottomNav a{
    flex:1; display:flex; flex-direction:column; align-items:center; justify-content:center;
    gap:3px; font-size:.68rem; color:var(--ink-soft); text-decoration:none;
  }
  #bottomNav a .ico{ font-size:1.25rem; line-height:1; }
  #bottomNav a.active{ color:var(--red-dark); font-weight:600; }
}

@media (min-width:701px){ #sidebarBackdrop{ display:none !important; } }