:root{
  --bg:#f5f7fb;--panel:#fff;--text:#132238;--muted:#6b778c;--line:#e6eaf0;
  --nav:#0f172a;--accent:#2563eb;--accent2:#dbeafe;--danger:#b42318;--success:#15803d;
  --shadow:0 8px 30px rgba(15,23,42,.06);--radius:18px;
}
*{box-sizing:border-box}html{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text)}
body{margin:0;background:var(--bg)}a{color:var(--accent);text-decoration:none}button,input,select{font:inherit}
.shell{min-height:100vh;display:grid;grid-template-columns:250px 1fr}
.sidebar{position:sticky;top:0;height:100vh;background:var(--nav);color:#fff;padding:26px 20px;display:flex;flex-direction:column}
.brand{display:flex;align-items:center;gap:12px}.brand-mark{display:grid;place-items:center;width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,#3b82f6,#7c3aed);font-weight:800;font-size:20px}
.brand strong,.brand span{display:block}.brand span{font-size:12px;color:#9ca8bc;margin-top:2px}.nav{margin-top:34px;display:grid;gap:6px}
.nav a{color:#b8c1d1;padding:11px 12px;border-radius:10px;font-weight:600}.nav a:hover,.nav a.active{background:#1e293b;color:#fff}
.logout{margin-top:auto}.link-button{border:0;background:none;color:#94a3b8;padding:10px 0;cursor:pointer}.link-button:hover{color:#fff}
.main{padding:38px;max-width:1500px;width:100%;margin:0 auto}.page-head{display:flex;justify-content:space-between;align-items:flex-start;gap:22px;margin-bottom:26px}
.page-head h1{font-size:34px;line-height:1.1;margin:4px 0 8px}.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:11px;font-weight:800;color:var(--accent);margin:0}
.muted{color:var(--muted);margin:0;line-height:1.6}.button{display:inline-flex;align-items:center;justify-content:center;border:1px solid transparent;border-radius:10px;padding:10px 15px;font-weight:700;cursor:pointer;white-space:nowrap}
.button.primary{background:var(--accent);color:#fff}.button.primary:hover{background:#1d4ed8}.button.secondary{background:#fff;color:var(--text);border-color:var(--line)}.button.secondary:hover{background:#f8fafc}
.button.danger{background:#fff;color:var(--danger);border-color:#fecaca}.button.danger:hover{background:#fff1f2}
.session-card{background:linear-gradient(120deg,#eff6ff,#f8fafc);border:1px solid #dbeafe;border-radius:var(--radius);padding:20px 22px;display:flex;align-items:center;gap:24px;justify-content:space-between;margin-bottom:22px;box-shadow:var(--shadow)}
.session-card.live{background:linear-gradient(120deg,#ecfdf5,#f8fafc);border-color:#bbf7d0}.session-card p{margin:4px 0 0;color:var(--muted)}.live-dot{display:inline-block;width:9px;height:9px;border-radius:50%;background:#22c55e;margin-right:8px;box-shadow:0 0 0 6px rgba(34,197,94,.12)}
.session-numbers{display:flex;gap:18px;align-items:center}.session-numbers span{display:grid;color:var(--muted);font-size:12px}.session-numbers b{color:var(--text);font-size:22px}
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-bottom:22px}.stat-grid.compact{grid-template-columns:repeat(4,minmax(0,1fr))}.stat{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.stat span,.stat small{display:block;color:var(--muted)}.stat b{display:block;font-size:28px;margin:7px 0}.stat.featured{background:#0f172a;color:#fff;border-color:#0f172a}.stat.featured span,.stat.featured small{color:#b7c2d3}.stat.featured b{color:#fff}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;margin-bottom:22px}.panel-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:18px}.panel-head h2{margin:0 0 4px;font-size:19px}.panel-head p{margin:0;color:var(--muted);font-size:13px}
.pay-breakdown{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border:1px solid var(--line);border-radius:14px;overflow:hidden}.pay-breakdown>div{padding:16px;border-right:1px solid var(--line)}.pay-breakdown>div:last-child{border-right:0}.pay-breakdown span{display:block;font-size:12px;color:var(--muted);margin-bottom:5px}.pay-breakdown b{font-size:19px}.pay-breakdown .total{background:#f8fafc}
.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;min-width:760px}th{text-align:left;font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:#7c8799;padding:10px 12px;border-bottom:1px solid var(--line)}td{padding:14px 12px;border-bottom:1px solid #edf0f4;vertical-align:middle;font-size:14px}tbody tr:last-child td{border-bottom:0}td small{display:block;color:var(--muted);font-size:12px;margin-top:3px}.money{font-weight:800}.table-action{font-weight:700;font-size:13px}.empty{padding:28px;border:1px dashed #ccd3dd;border-radius:14px;color:var(--muted);text-align:center;background:#fafbfc}
.form-panel{max-width:980px}.form-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.form-stack{display:grid;gap:18px}.form-stack.narrow{max-width:520px}.span-2{grid-column:span 2}.span-all{grid-column:1/-1}label{display:grid;gap:7px;font-weight:700;font-size:13px}label small{font-weight:400;color:var(--muted);line-height:1.4}input,select{width:100%;border:1px solid #cfd6e1;border-radius:10px;background:#fff;padding:11px 12px;color:var(--text);outline:none}input:focus,select:focus{border-color:#60a5fa;box-shadow:0 0 0 3px rgba(37,99,235,.1)}input:disabled{background:#f8fafc;color:#64748b}.form-actions{display:flex;justify-content:flex-end;gap:10px;padding-top:6px}.danger-zone{border-top:1px solid var(--line);margin-top:24px;padding-top:18px}.link-danger{border:0;background:none;color:var(--danger);font-weight:700;cursor:pointer;padding:0}
.alert{padding:13px 15px;border-radius:11px;margin-bottom:18px;font-weight:650}.alert.error{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}.alert.success{background:#f0fdf4;color:#166534;border:1px solid #bbf7d0}.badge{display:inline-flex;padding:4px 8px;border-radius:999px;font-size:11px;font-weight:800;text-transform:capitalize}.badge.pending{background:#fef3c7;color:#92400e}.badge.paid{background:#dcfce7;color:#166534}.badge.disputed{background:#fee2e2;color:#991b1b}.negative{color:#b42318}.positive{color:#15803d}
.period-card{padding-bottom:20px}.period-expected{font-size:24px}.period-form{display:flex;align-items:end;gap:12px;margin-top:18px;padding-top:18px;border-top:1px solid var(--line)}.period-form label{min-width:180px}.period-form .grow{flex:1}.info-panel{max-width:980px}.info-panel h2{margin-top:0}.info-panel p{color:var(--muted);line-height:1.6}
.auth-body{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at top left,#dbeafe,transparent 34%),radial-gradient(circle at bottom right,#ede9fe,transparent 32%),#f8fafc}.auth-card{width:min(440px,100%);background:#fff;border:1px solid var(--line);box-shadow:0 24px 70px rgba(15,23,42,.12);border-radius:22px;padding:30px}.auth-card h1{font-size:28px;margin:28px 0 8px}.auth-brand .brand span{color:var(--muted)}
@media (max-width:1050px){.stat-grid,.stat-grid.compact{grid-template-columns:repeat(2,1fr)}.pay-breakdown{grid-template-columns:repeat(2,1fr)}.pay-breakdown>div:nth-child(2){border-right:0}.pay-breakdown>div:nth-child(-n+2){border-bottom:1px solid var(--line)}.form-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:760px){.shell{display:block}.sidebar{position:static;height:auto;padding:14px 16px}.sidebar .brand{margin-bottom:12px}.nav{margin:0;display:flex;overflow:auto}.nav a{white-space:nowrap;padding:9px 10px;font-size:13px}.logout{display:none}.main{padding:22px 15px}.page-head{display:grid}.page-head h1{font-size:29px}.session-card{align-items:flex-start;display:grid}.session-numbers{justify-content:flex-start}.stat-grid,.stat-grid.compact{grid-template-columns:1fr 1fr}.form-grid{grid-template-columns:1fr}.span-2{grid-column:span 1}.pay-breakdown{grid-template-columns:1fr}.pay-breakdown>div{border-right:0;border-bottom:1px solid var(--line)!important}.pay-breakdown>div:last-child{border-bottom:0!important}.period-form{display:grid}.period-form label{min-width:0}.auth-card{padding:24px}.button{width:100%}}
@media (max-width:430px){.stat-grid,.stat-grid.compact{grid-template-columns:1fr}.session-numbers{display:grid;grid-template-columns:1fr 1fr}.form-actions{display:grid}.page-head .button{width:100%}}

.button-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.button-row form{margin:0}
.sync-strip{display:flex;align-items:center;justify-content:space-between;gap:18px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px;margin:-8px 0 22px;box-shadow:var(--shadow)}
.sync-strip div{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.sync-strip small{display:block;width:100%;margin-left:17px;color:var(--muted)}
.device-code{display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding:16px;border:1px solid #bfdbfe;background:#eff6ff;border-radius:14px;margin-bottom:12px}.device-code span{color:var(--muted);font-size:12px}.device-code strong{font-size:26px;letter-spacing:.12em}
@media (max-width:760px){.sync-strip{display:grid}.button-row{display:grid}.button-row .button{width:100%}.device-code{display:grid}.device-code .button{width:100%}}