:root{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;color:#1a1a2e;background:#f0f2f5}*{box-sizing:border-box}body{margin:0}.app-shell{display:flex;min-height:100vh}.sidebar{width:220px;background:#1a1a2e;color:#fff;padding:20px 0;position:fixed;height:100vh;overflow-y:auto}.logo{font-size:1.1rem;font-weight:700;padding:0 20px 20px;border-bottom:1px solid #2a2a4a}.active-session-card{margin:12px 20px 10px;padding:10px;border:1px solid #2f355a;border-radius:8px;background:#111730}.active-session-label{color:#98a2b3;font-size:.75rem;text-transform:uppercase;letter-spacing:.04em}.active-session-name{color:#fff;margin-top:4px;font-weight:600}.auth-profile-card{margin:0 20px 12px;padding:10px;border:1px solid #2f355a;border-radius:8px;background:#111730}.auth-profile-name{color:#fff;font-weight:600;font-size:.9rem}.auth-profile-role{margin-top:4px;color:#98a2b3;font-size:.78rem}.signout-button{width:100%;margin-top:8px;padding:7px 10px;font-size:.82rem;background:#2a2a4a}.nav{display:grid;margin-top:10px}.nav-link{color:#aaa;text-decoration:none;padding:11px 20px}.nav-link.active,.nav-link:hover{background:#2a2a4a;color:#fff}.content{margin-left:220px;width:calc(100% - 220px);padding:30px}.page-card{background:#fff;border-radius:10px;box-shadow:0 2px 8px #0000000f;padding:20px}.auth-state-card{width:min(460px,calc(100vw - 30px));margin:70px auto;background:#fff;border-radius:10px;box-shadow:0 2px 8px #0000000f;padding:20px}.section-title{margin:10px 0}.stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:14px}.stat-card{border:1px solid #eaecf0;border-radius:10px;padding:16px;background:#f8fafc;text-align:center}.stat-number{font-size:1.9rem;font-weight:700;line-height:1.1;color:#1a1a2e}.stat-label{margin-top:6px;color:#667085;font-size:.9rem}h1{margin-top:0}.muted{color:#666}.centered{text-align:center}.status-note{color:#1a1a2e;font-weight:600}.error-text{color:#b42318;min-height:20px}.actions{display:flex;gap:10px;margin:14px 0 16px;flex-wrap:wrap}.session-form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px 12px;margin:14px 0 16px}.field-label{display:grid;gap:6px;color:#475467;font-size:.88rem}.checkbox-row{display:flex;align-items:center;gap:8px;color:#344054}.checkbox-row input[type=checkbox]{width:16px;height:16px;margin:0;padding:0}button,select,input{border-radius:6px;border:1px solid #d0d5dd;padding:9px 12px;font-size:.9rem}button{background:#1a1a2e;color:#fff;cursor:pointer;border:none}button:disabled{opacity:.6;cursor:not-allowed}.table{width:100%;border-collapse:collapse;background:#fff;border:1px solid #eaecf0}.table th,.table td{text-align:left;border-bottom:1px solid #f2f4f7;padding:10px 12px;vertical-align:top}.table thead th{background:#1a1a2e;color:#fff}.table td button{margin-right:8px;margin-bottom:6px}.summary-table{width:320px;margin-left:auto;margin-top:12px;border-collapse:collapse}.summary-table th,.summary-table td{border:1px solid #eaecf0;padding:8px 10px}.summary-table th{background:#f8fafc;text-align:left}.footer-actions{margin-top:10px;display:flex;justify-content:flex-end;gap:10px}.modal-backdrop{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:100;padding:20px}.modal-content-wide{width:min(1120px,96vw);max-height:90vh;overflow:auto;background:#fff;border-radius:10px;padding:16px}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.modal-header h2{margin:0}.modal-actions{display:flex;gap:8px}.panel{border:1px solid #eaecf0;border-radius:8px;padding:12px}.po-header-grid,.invoice-meta-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:8px 12px;margin-bottom:12px}.span-all{grid-column:1 / -1}.input-error{border-color:#d92d20;background:#fff5f5}.read-only-note{margin-top:10px;color:#8a6f00;font-size:.88rem;font-weight:600}.pending-delete td{background:#fff5f5}.session-active-pill{display:inline-block;padding:2px 8px;border-radius:999px;background:#ecfdf3;color:#027a48;font-size:.8rem;font-weight:600}.session-actions{display:flex;gap:8px;flex-wrap:wrap}.invoice-manual-pill{display:inline-block;margin-left:8px;padding:2px 8px;border-radius:999px;background:#fff4e5;color:#9a3412;font-size:.75rem;font-weight:600}.login-shell{min-height:100vh;display:grid;place-items:center;padding:20px;background:linear-gradient(140deg,#0d1328,#1a1a2e 58%,#2a2a4a)}.login-card{width:min(420px,100%);background:#fff;border-radius:12px;padding:20px;box-shadow:0 10px 24px #00000040}.login-form{display:grid;gap:10px}@media(max-width:900px){.sidebar{position:static;width:100%;height:auto}.content{margin-left:0;width:100%}.app-shell{flex-direction:column}}