/* Đăng nhập + khối người dùng + trang tài khoản — dùng chung màu với giao diện lớp học */
.lop-login{position:fixed;inset:0;z-index:9999;background:var(--side,#13262d);display:flex;align-items:center;justify-content:center;padding:16px}
.lop-login form{background:var(--surface,#fff);color:var(--ink,#14222a);width:100%;max-width:360px;border-radius:14px;padding:28px 24px;box-shadow:0 20px 60px rgba(0,0,0,.35)}
.lop-login .lg-logo{width:46px;height:46px;border-radius:12px;background:var(--seal,#c8372d);color:#fff;display:flex;align-items:center;justify-content:center;font:600 24px "Gowun Dodum",sans-serif;margin-bottom:12px}
.lop-login h2{margin:0 0 4px;font:600 20px "Lexend","Be Vietnam Pro",sans-serif}
.lop-login p.s{margin:0 0 18px;color:var(--muted,#566a70);font-size:13.5px}
.lop-login label{display:block;font-size:13px;font-weight:600;margin:12px 0 5px}
.lop-login input,.lop-box input,.lop-box select{width:100%;box-sizing:border-box;padding:10px 12px;border:1px solid var(--line,#d5dfdc);border-radius:9px;font:inherit;font-size:15px;background:#fff;color:inherit}
.lop-login input:focus,.lop-box input:focus,.lop-box select:focus{outline:2px solid var(--accent,#0d7468);outline-offset:1px}
.lop-btn{appearance:none;border:0;border-radius:9px;padding:10px 16px;font:inherit;font-weight:600;font-size:14.5px;cursor:pointer;background:var(--accent,#0d7468);color:#fff}
.lop-btn.ghost{background:transparent;color:var(--accent,#0d7468);border:1px solid var(--line,#d5dfdc)}
.lop-btn.red{background:var(--seal,#c8372d)}
.lop-btn:disabled{opacity:.6;cursor:default}
.lop-login .lop-btn{width:100%;margin-top:18px;padding:12px}
.lop-err{color:var(--seal,#c8372d);font-size:13.5px;margin-top:12px;min-height:18px}
.lop-ok{color:var(--accent,#0d7468);font-size:13.5px}
.lop-user{padding:12px 8px 0;margin-top:10px;border-top:1px solid var(--side-line,rgba(255,255,255,.12));font-size:13px;color:var(--side-ink,#dfeae7)}
.lop-user b{display:block;color:var(--side-strong,#fff);font-weight:600}
.lop-user small{color:var(--side-muted,#8fa7a8)}
.lop-user .row{display:flex;flex-wrap:wrap;gap:6px 14px;margin-top:8px}
.lop-user a,.lop-user button{background:none;border:0;padding:0;color:var(--side-accent,#62d3c0);font:inherit;font-size:12.5px;cursor:pointer;text-decoration:underline}
@media(max-width:760px){.lop-user{display:none}.side.open .lop-user{display:block}}
/* trang tài khoản */
body.lop-page{margin:0;background:var(--bg,#f1f4f3);color:var(--ink,#14222a);font:14.5px "Be Vietnam Pro",-apple-system,sans-serif}
.lop-wrap{max-width:980px;margin:0 auto;padding:20px 16px 60px}
.lop-wrap h1{font:600 22px "Lexend","Be Vietnam Pro",sans-serif;margin:6px 0 4px}
.lop-top{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.lop-top a{color:var(--accent,#0d7468)}
.lop-box{background:var(--surface,#fff);border:1px solid var(--line,#d5dfdc);border-radius:12px;padding:16px;margin-top:16px}
.lop-box h2{margin:0 0 10px;font-size:16px}
.lop-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px}
.lop-grid label{font-size:12.5px;font-weight:600;display:block;margin-bottom:4px}
.lop-tbl{width:100%;border-collapse:collapse;font-size:13.5px}
.lop-tbl th,.lop-tbl td{text-align:left;padding:8px 6px;border-bottom:1px solid var(--line,#d5dfdc);vertical-align:middle}
.lop-tbl th{font-size:12px;color:var(--muted,#566a70);text-transform:uppercase;letter-spacing:.03em}
.lop-scroll{overflow-x:auto}
.tag{display:inline-block;padding:2px 8px;border-radius:99px;font-size:12px;background:var(--accent-soft,#d3ebe6);color:var(--accent,#0d7468)}
.tag.off{background:#f3d6d3;color:#9a2a22}
.lop-act button{margin-right:6px;margin-bottom:4px;padding:4px 9px;font-size:12.5px}