:root{--bg:#f4f6f8;--card:#fff;--text:#18202a;--muted:#697586;--primary:#1e66f5;--line:#e6e9ef;--danger:#dc3545}*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}.app-shell{display:flex;min-height:100vh}.sidebar{width:265px;background:#101828;color:#fff;padding:24px;display:flex;flex-direction:column;gap:28px}.brand{display:flex;gap:12px;align-items:center}.brand-stacked{align-items:flex-start;flex-direction:column}.brand-logo{width:190px;max-width:100%;height:auto;border-radius:8px;background:#fff;object-fit:contain;padding:4px}.brand-mark{width:44px;height:44px;border-radius:14px;background:var(--primary);display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:800}.brand span{display:block;color:#98a2b3;font-size:12px;margin-top:3px}nav{display:flex;flex-direction:column;gap:8px}nav a{color:#d0d5dd;text-decoration:none;padding:11px 12px;border-radius:12px}nav a:hover{background:#1d2939;color:white}.user-box{margin-top:auto;color:#d0d5dd;font-size:14px}.content{flex:1;padding:32px}.page-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}h1{margin:0 0 6px;font-size:30px}h2{margin:0 0 16px;font-size:20px}p{color:var(--muted);margin:0}.card,.login-card{background:var(--card);border:1px solid var(--line);border-radius:8px;box-shadow:0 12px 35px rgba(16,24,40,.06);padding:24px;margin-bottom:20px}.login-card{max-width:420px;margin:80px auto}label{display:block;margin:14px 0 7px;color:#344054;font-weight:700;font-size:13px}input,textarea,select{width:100%;border:1px solid #d0d5dd;border-radius:8px;padding:11px 12px;font-size:15px;background:#fff}textarea{min-height:72px;resize:vertical}.btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid #d0d5dd;background:#fff;color:#18202a;text-decoration:none;border-radius:8px;padding:10px 14px;font-weight:700;cursor:pointer}.btn.primary{background:var(--primary);border-color:var(--primary);color:white}.btn.danger{color:var(--danger)}.btn.small{padding:7px 10px;font-size:13px}.btn.big{padding:13px 20px;font-size:16px}.grid.two{display:grid;grid-template-columns:1fr 1fr;gap:20px}.section-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.item-row{border:1px solid var(--line);border-radius:8px;padding:16px;margin-bottom:14px;background:#fbfcfe}.row-top{display:grid;grid-template-columns:1fr 70px 100px 120px 100px 100px 42px;gap:10px;margin-bottom:10px}.line-preview{text-align:right;color:var(--muted);margin-top:8px}.total-box{margin-left:auto;margin-top:20px;max-width:380px;border-top:1px solid var(--line);padding-top:12px}.total-box div{display:flex;justify-content:space-between;padding:8px 0}.total-box .grand{font-size:22px;border-top:2px solid #101828;margin-top:6px;padding-top:12px}.list-table{width:100%;border-collapse:collapse}.list-table th,.list-table td{padding:14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}.list-table th{color:#667085;font-size:12px;text-transform:uppercase;letter-spacing:.04em}.right{text-align:right!important}.alert{padding:12px 16px;border-radius:8px;margin-bottom:16px;background:#eef4ff}.alert.success{background:#ecfdf3;color:#027a48}.alert.danger{background:#fef3f2;color:#b42318}.form-actions{text-align:right}.narrow{max-width:520px}@media(max-width:900px){.sidebar{display:none}.grid.two{grid-template-columns:1fr}.row-top{grid-template-columns:1fr 1fr}.content{padding:18px}}