:root{
  --mau-chinh:#0d6e4f;
  --mau-chinh-dam:#0a5a40;
  --mau-vang:#b8860b;
  --mau-do:#c0392b;
  --mau-xanh-info:#2563eb;
  --mau-nen:#f4f6f8;
  --mau-vien:#e2e6ea;
  --mau-chu:#1f2937;
}
*{box-sizing:border-box;}
body{margin:0;font-family:'Segoe UI',Tahoma,Arial,sans-serif;background:var(--mau-nen);color:var(--mau-chu);}
a{color:var(--mau-chinh);text-decoration:none;}
a:hover{text-decoration:underline;}

/* ===== Đăng nhập ===== */
.trang-dangnhap{display:flex;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,#0d6e4f,#0a3d2c);}
.khung-dangnhap{background:#fff;padding:40px;border-radius:12px;box-shadow:0 10px 30px rgba(0,0,0,.2);width:380px;}
.logo-dangnhap h1{font-size:20px;margin:0 0 4px;color:var(--mau-chinh);}
.logo-dangnhap p{font-size:13px;color:#666;margin:0 0 20px;}
.form-dangnhap .nhom-input{margin-bottom:16px;}
.form-dangnhap label{display:block;font-size:13px;margin-bottom:4px;font-weight:600;}
.form-dangnhap input{width:100%;padding:10px 12px;border:1px solid var(--mau-vien);border-radius:6px;font-size:14px;}
.nut-dangnhap{width:100%;padding:12px;background:var(--mau-chinh);color:#fff;border:none;border-radius:6px;font-size:15px;cursor:pointer;}
.nut-dangnhap:hover{background:var(--mau-chinh-dam);}

/* ===== Layout chính ===== */
.khung-chinh{display:flex;min-height:100vh;}
.thanh-menu{width:230px;background:#101a23;color:#cfd8dc;display:flex;flex-direction:column;}
.logo-menu{padding:20px;font-weight:700;color:#fff;border-bottom:1px solid #243340;font-size:15px;}
.thanh-menu nav{flex:1;padding:10px 0;}
.thanh-menu nav a{display:block;padding:10px 20px;color:#cfd8dc;font-size:14px;}
.thanh-menu nav a:hover,.thanh-menu nav a.dang-chon{background:#1c2b38;color:#fff;text-decoration:none;border-left:3px solid var(--mau-chinh);}
.khu-taikhoan{padding:16px 20px;border-top:1px solid #243340;font-size:13px;}
.ten-nguoidung{margin-bottom:6px;}
.nut-dangxuat{color:#ff8a80;}
.noidung-chinh{flex:1;padding:28px 32px;}
.noidung-chinh h1{margin-top:0;font-size:22px;}

/* ===== Thông báo ===== */
.thongbao-loi{background:#fdecea;color:var(--mau-do);padding:12px 16px;border-radius:6px;margin-bottom:16px;font-size:14px;}
.thongbao-thanhcong{background:#e7f6ec;color:var(--mau-chinh-dam);padding:12px 16px;border-radius:6px;margin-bottom:16px;font-size:14px;}
.thongbao-canhbao{background:#fff8e1;color:var(--mau-vang);padding:12px 16px;border-radius:6px;margin-bottom:16px;font-size:14px;}
.ghichu-trang{color:#666;font-size:13px;}

/* ===== Thẻ thống kê ===== */
.luoi-thecard{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:30px;}
.thecard{background:#fff;border-radius:10px;padding:20px;box-shadow:0 1px 4px rgba(0,0,0,.06);border-left:4px solid var(--mau-chinh);}
.thecard.mau-vang{border-left-color:var(--mau-vang);}
.thecard.mau-xanh{border-left-color:var(--mau-chinh);}
.thecard.mau-do{border-left-color:var(--mau-do);}
.thecard-sohieu{font-size:28px;font-weight:700;}
.thecard-tieude{font-size:13px;color:#666;margin-top:4px;}

/* ===== Bảng dữ liệu ===== */
.bang-dulieu{width:100%;border-collapse:collapse;background:#fff;border-radius:8px;overflow:hidden;box-shadow:0 1px 4px rgba(0,0,0,.06);}
.bang-dulieu th,.bang-dulieu td{padding:10px 14px;border-bottom:1px solid var(--mau-vien);font-size:13.5px;text-align:left;}
.bang-dulieu th{background:#eef2f5;font-weight:600;}
.bang-dulieu tbody tr:hover{background:#f8fafb;}

/* ===== Trạng thái ===== */
.nhan-trangthai{display:inline-block;padding:3px 10px;border-radius:12px;font-size:12px;font-weight:600;}
.nhan-dangxuly{background:#fff3cd;color:#8a6500;}
.nhan-hoanthanh{background:#d7f3e3;color:var(--mau-chinh-dam);}
.nhan-tamdung{background:#e2e3e5;color:#555;}
.nhan-huy{background:#fdecea;color:var(--mau-do);}
.nhan-dagui{background:#d7f3e3;color:var(--mau-chinh-dam);}
.nhan-chuagui{background:#e2e3e5;color:#555;}
.nhan-loi{background:#fdecea;color:var(--mau-do);}

/* ===== Form chung ===== */
.form-chuan{background:#fff;padding:24px;border-radius:10px;box-shadow:0 1px 4px rgba(0,0,0,.06);max-width:640px;margin-bottom:24px;}
.form-chuan .nhom-input{margin-bottom:14px;}
.form-chuan label{display:block;font-size:13px;font-weight:600;margin-bottom:4px;}
.form-chuan input,.form-chuan select,.form-chuan textarea{width:100%;padding:9px 12px;border:1px solid var(--mau-vien);border-radius:6px;font-size:14px;font-family:inherit;}
.nhom-checkbox{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:16px;font-size:13.5px;}
.batbuoc{color:var(--mau-do);}
.nut-luu,.nut-them,.nut-phu,.nut-hoanthanh{padding:9px 18px;background:var(--mau-chinh);color:#fff;border:none;border-radius:6px;font-size:14px;cursor:pointer;display:inline-block;}
.nut-luu:hover,.nut-them:hover,.nut-hoanthanh:hover{background:var(--mau-chinh-dam);}
.nut-phu{background:var(--mau-xanh-info);}
.nut-hoanthanh{background:var(--mau-vang);}

.form-timkiem{display:flex;gap:10px;margin-bottom:18px;align-items:center;}
.form-timkiem input{padding:9px 12px;border:1px solid var(--mau-vien);border-radius:6px;min-width:260px;}
.hang-nutchucnang{display:flex;gap:24px;margin-bottom:24px;flex-wrap:wrap;}

/* ===== Form full màn hình (Mẫu 01...) ===== */
.form-fullwidth{max-width:none !important;width:100%;}
.form-fullwidth fieldset{border:1px solid var(--mau-vien);border-radius:8px;padding:16px 20px;margin-bottom:18px;}
.form-fullwidth legend{font-weight:700;color:var(--mau-chinh-dam);padding:0 8px;font-size:14px;}
.luoi-form-2cot{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.luoi-form-3cot{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px;}
.nhom-3cot{display:flex;gap:10px;}
.nhom-3cot > div{flex:1;}
.nhom-3cot label{display:block;font-size:13px;font-weight:600;margin-bottom:4px;}
.nhom-3cot input{width:100%;padding:9px 12px;border:1px solid var(--mau-vien);border-radius:6px;}
.hang-nut-cuoiform{display:flex;align-items:center;gap:16px;margin-top:10px;}
@media (max-width: 1000px){
  .luoi-form-2cot,.luoi-form-3cot{grid-template-columns:1fr;}
}

/* ===== Icon nổi bật góc phải tiêu đề ===== */
.hang-tieude-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.hang-icon-noibat{display:flex;gap:10px;}
.icon-noi-bat{font-size:28px;text-decoration:none;background:#fff;border:1px solid var(--mau-vien);border-radius:50%;width:48px;height:48px;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 6px rgba(0,0,0,.08);}
.icon-noi-bat:hover{background:#eef6f1;}
.icon-noi-bat.icon-kyduyet{border-color:var(--mau-vang);}
.icon-noi-bat.icon-kyduyet:hover{background:#fff8e1;}

/* ===== Bảng tính toán Mẫu 04 ===== */
.bang-tinhtoan-mau04{width:100%;border-collapse:collapse;margin-bottom:6px;}
.bang-tinhtoan-mau04 th,.bang-tinhtoan-mau04 td{border:1px solid var(--mau-vien);padding:8px;font-size:13px;}
.bang-tinhtoan-mau04 th{background:#eef2f5;}
.bang-tinhtoan-mau04 input{width:100%;padding:6px 8px;border:1px solid var(--mau-vien);border-radius:4px;box-sizing:border-box;}

/* ===== Khung xem văn bản Mẫu 01 dạng giấy ===== */
.khung-vanban-xem{background:#fff;padding:36px 44px;border-radius:10px;box-shadow:0 1px 6px rgba(0,0,0,.08);max-width:900px;margin:0 auto;font-size:14px;line-height:1.6;}
.vb-dauvanban{display:flex;justify-content:space-between;gap:20px;font-size:13px;}
.vb-sovb{display:flex;justify-content:space-between;gap:20px;font-size:13px;margin-top:6px;}
.vb-kyduyet{display:flex;justify-content:space-between;margin-top:30px;}

/* ===== Khung ký duyệt ===== */
.khung-kyduyet{border:1px solid var(--mau-vien);border-radius:8px;padding:16px 20px;margin-top:10px;max-width:760px;background:#fff;}
.khung-kyduyet legend{font-weight:700;color:var(--mau-chinh-dam);}
.khung-lienket-kyduyet{background:#fff;border:1px solid var(--mau-vien);border-radius:8px;padding:14px 20px;max-width:760px;margin-top:10px;}

/* ===== Trang ký duyệt hiện đại (taisan_kyduyet.php) ===== */
.khung-kyduyet-hiendai{max-width:900px;margin:0 auto;}
.kyduyet-trangthai-banner{padding:14px 22px;border-radius:10px;font-size:15px;margin-bottom:20px;text-align:center;box-shadow:0 1px 4px rgba(0,0,0,.06);}
.kyduyet-trangthai-banner.trangthai-chua_ky{background:#fff8e1;color:#8a6500;}
.kyduyet-trangthai-banner.trangthai-dong_y{background:#e7f6ec;color:var(--mau-chinh-dam);}
.kyduyet-trangthai-banner.trangthai-khong_dong_y{background:#fdecea;color:var(--mau-do);}
.kyduyet-noidung-vanban{background:#fff;padding:30px 40px;border-radius:10px;box-shadow:0 1px 6px rgba(0,0,0,.08);font-size:14px;line-height:1.6;}
.kyduyet-gopy-hienthi{background:#fdecea;border:1px solid #f5c6cb;border-radius:8px;padding:14px 20px;margin-top:18px;color:#7a2018;}
.kyduyet-khuvuc-nut{background:#fff;border-radius:10px;padding:24px 30px;margin-top:18px;box-shadow:0 1px 6px rgba(0,0,0,.08);}
.kyduyet-khuvuc-nut h3{margin-top:0;font-size:16px;}
.kyduyet-2nut{display:flex;gap:16px;flex-wrap:wrap;}
.nut-kyduyet{flex:1;min-width:200px;padding:16px 20px;border-radius:10px;border:2px solid var(--mau-vien);background:#fafafa;font-size:15px;font-weight:600;cursor:pointer;transition:.15s;}
.nut-kyduyet:hover{border-color:#bbb;background:#f3f3f3;}
.nut-dongy.nut-dangchon{border-color:var(--mau-chinh);background:#e7f6ec;color:var(--mau-chinh-dam);}
.nut-khongdongy.nut-dangchon{border-color:var(--mau-do);background:#fdecea;color:var(--mau-do);}



.form-inline{display:flex;gap:8px;align-items:center;background:#fff;padding:10px 14px;border-radius:8px;box-shadow:0 1px 4px rgba(0,0,0,.06);}
.form-inline label{font-size:13px;font-weight:600;}
.form-inline input{padding:6px 8px;border:1px solid var(--mau-vien);border-radius:5px;}

.khung-thongtin{background:#fff;padding:18px 22px;border-radius:10px;box-shadow:0 1px 4px rgba(0,0,0,.06);margin-bottom:20px;}
.khung-thongtin p{margin:6px 0;font-size:14px;}

/* ===== Các bước quy trình ===== */
.danhsach-buoc{display:flex;flex-direction:column;gap:14px;}
.thebuoc{display:flex;gap:18px;background:#fff;border-radius:10px;padding:16px 20px;box-shadow:0 1px 4px rgba(0,0,0,.06);border-left:4px solid var(--mau-vien);}
.thebuoc.trangthai-dangthuchien{border-left-color:var(--mau-xanh-info);}
.thebuoc.trangthai-hoanthanh{border-left-color:var(--mau-chinh);}
.thebuoc.trangthai-quahan{border-left-color:var(--mau-do);background:#fff8f7;}
.thebuoc-soluong{min-width:70px;font-weight:700;color:var(--mau-chinh);font-size:14px;}
.thebuoc-noidung h3{margin:0 0 6px;font-size:15px;}
.thebuoc-noidung p{margin:4px 0;font-size:13.5px;color:#444;}
.thebuoc-meta{color:#888 !important;font-size:12.5px !important;}
.thebuoc-bieumau{color:#555 !important;font-style:italic;}
.form-hoanthanh{display:flex;gap:8px;margin-top:10px;}
.form-hoanthanh input{flex:1;padding:7px 10px;border:1px solid var(--mau-vien);border-radius:5px;}

@media (max-width: 900px){
  .luoi-thecard{grid-template-columns:repeat(2,1fr);}
  .khung-chinh{flex-direction:column;}
  .thanh-menu{width:100%;}
}