:root{--bg:#f5f7f8;--card:#fff;--text:#172126;--muted:#68767d;--line:#e1e7ea;--accent:#27483d;--accent2:#b99455;--danger:#9b2c2c;--warn:#b7791f;--ok:#2f855a}
*{box-sizing:border-box}body{margin:0;font-family:Tahoma,"Segoe UI",sans-serif;background:var(--bg);color:var(--text)}button,input,select,textarea{font:inherit}button{cursor:pointer}.hidden{display:none!important}.login-shell{min-height:100vh;display:grid;place-items:center;padding:24px;background:linear-gradient(135deg,#eef3f1,#f7f1e7)}.login-card{width:min(460px,100%);background:#fff;border:1px solid var(--line);border-radius:24px;padding:32px;box-shadow:0 24px 60px #00000010}.login-card h1{font-size:22px;line-height:1.7;margin:12px 0 4px}.login-card p{color:var(--muted);line-height:1.9;margin:0 0 24px}.brand-mark{width:72px;height:72px;border-radius:22px;background:var(--accent);color:#fff;display:grid;place-items:center;font-size:36px;font-weight:700;border:4px solid #e8ddc7}.brand-mark.small{width:42px;height:42px;border-radius:13px;font-size:22px;border-width:2px}.login-card label,.form-grid label{display:flex;flex-direction:column;gap:7px;margin-bottom:14px;color:#415057;font-size:13px}.login-card input,.form-grid input,.form-grid select,.form-grid textarea{width:100%;border:1px solid #ccd5d9;border-radius:11px;padding:11px 12px;background:#fff;outline:none}.login-card input:focus,.form-grid input:focus,.form-grid select:focus,.form-grid textarea:focus{border-color:var(--accent)}button{border:0;border-radius:10px;padding:10px 14px;background:#edf1f2;color:var(--text)}button.primary{background:var(--accent);color:#fff}button.danger{background:#fbeaea;color:var(--danger)}button.ghost{background:transparent;border:1px solid var(--line)}.error{color:var(--danger);margin-top:10px}.app-shell{display:grid;grid-template-columns:260px 1fr;min-height:100vh}.sidebar{background:#172a24;color:#fff;padding:18px 14px;display:flex;flex-direction:column;gap:20px;position:sticky;top:0;height:100vh}.sidebar-brand{display:flex;gap:10px;align-items:center;padding:4px}.sidebar-brand strong,.sidebar-brand small{display:block}.sidebar-brand small{opacity:.65;margin-top:4px}.sidebar nav{display:flex;flex-direction:column;gap:5px}.sidebar nav button{background:transparent;color:#dce6e2;text-align:right;padding:11px 12px}.sidebar nav button.active,.sidebar nav button:hover{background:#ffffff16;color:#fff}.sidebar-footer{margin-top:auto;border-top:1px solid #ffffff18;padding-top:12px;font-size:12px;color:#c7d4cf;display:flex;align-items:center;justify-content:space-between;gap:10px}.sidebar-footer .ghost{color:#fff;border-color:#ffffff2b}.main{min-width:0}.topbar{height:80px;padding:16px 28px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:3}.topbar h2{font-size:19px;margin:0 0 5px}.topbar small{color:var(--muted)}.pill{background:#f0ece4;border:1px solid #e1d5bf;color:#69522f;padding:7px 10px;border-radius:99px;font-size:12px}#content{padding:24px 28px 48px}.cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px}.metric small{color:var(--muted)}.metric strong{display:block;font-size:25px;margin:9px 0 2px}.metric span{color:var(--muted);font-size:12px}.section-title{display:flex;align-items:center;justify-content:space-between;margin:24px 0 10px}.section-title h3{font-size:16px;margin:0}.table-wrap{overflow:auto;background:#fff;border:1px solid var(--line);border-radius:16px}table{width:100%;border-collapse:collapse;min-width:760px}th,td{padding:11px 12px;border-bottom:1px solid #edf0f2;text-align:right;font-size:13px;white-space:nowrap}th{color:#58676e;background:#fafbfb;font-weight:600}.badge{display:inline-block;padding:5px 8px;border-radius:99px;font-size:11px;background:#edf1f2}.badge.overdue{background:#fbe9e9;color:#9b2c2c}.badge.today{background:#fff2d9;color:#936319}.badge.paid{background:#e8f6ee;color:#2f855a}.toolbar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}.toolbar input{border:1px solid #ccd5d9;border-radius:10px;padding:9px 11px}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.form-grid .full{grid-column:1/-1}.split{display:grid;grid-template-columns:1fr 1fr;gap:16px}.muted{color:var(--muted)}.empty{padding:28px;text-align:center;color:var(--muted)}dialog{border:0;border-radius:18px;padding:18px;width:min(680px,92vw);box-shadow:0 30px 90px #0003}dialog::backdrop{background:#0006}.serial{font-family:Consolas,monospace;direction:ltr;display:inline-block}.amount{font-variant-numeric:tabular-nums}.notice{padding:12px 14px;background:#fff8e8;border:1px solid #f0dfb9;border-radius:12px;color:#705a2e;margin-bottom:14px}.success{padding:12px 14px;background:#edf8f1;border:1px solid #cce9d7;border-radius:12px;color:#286a45}.provider{display:flex;justify-content:space-between;align-items:center;gap:14px}.provider strong{display:block;margin-bottom:4px}.provider small{color:var(--muted)}
@media(max-width:980px){.app-shell{grid-template-columns:78px 1fr}.sidebar-brand div:last-child,.sidebar nav button{font-size:0}.sidebar nav button:before{content:'•';font-size:24px}.sidebar-footer{display:none}.cards{grid-template-columns:repeat(2,1fr)}.split{grid-template-columns:1fr}}
@media(max-width:640px){.app-shell{display:block}.sidebar{position:static;height:auto;flex-direction:row;overflow:auto}.sidebar-brand,.sidebar-footer{display:none}.sidebar nav{flex-direction:row}.sidebar nav button{font-size:12px;white-space:nowrap}.sidebar nav button:before{display:none}.topbar{position:static;padding:14px 16px}.pill{display:none}#content{padding:16px}.cards{grid-template-columns:1fr 1fr}.form-grid{grid-template-columns:1fr}.form-grid .full{grid-column:auto}}