:root{--bg:#f6f7f4;--surface:#fff;--surface-muted:#eef3ee;--text:#17201c;--muted:#65716a;--line:#dce3dd;--primary:#1f7a5c;--primary-strong:#13523f;--accent:#c15b36;--warning:#b7791f;--danger:#b42318;--shadow:0 18px 48px #19261f1a;--radius:8px;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button{cursor:pointer;border:0;border-radius:7px;justify-content:center;align-items:center;gap:8px;min-height:40px;padding:9px 12px;transition:background .16s,color .16s,transform .16s;display:inline-flex}button:hover{transform:translateY(-1px)}button:focus-visible,input:focus-visible,select:focus-visible{outline-offset:2px;outline:3px solid #1f7a5c38}input,select{border:1px solid var(--line);color:var(--text);background:#fff;border-radius:7px;width:100%;min-height:42px;padding:10px 11px}h1,h2,p{margin:0}#app{min-height:100vh}.app-shell{grid-template-columns:300px minmax(0,1fr);min-height:100vh;display:grid}.sidebar{color:#f6fbf7;background:#17201c;flex-direction:column;gap:22px;padding:22px;display:flex}.brand{align-items:center;gap:12px;display:flex}.brand strong,.brand span{display:block}.brand span{color:#b6c4bb;margin-top:2px;font-size:.85rem}.brand-mark{background:var(--primary);border-radius:var(--radius);place-items:center;width:42px;height:42px;display:grid}.workspace-switch{border-radius:var(--radius);background:#ffffff14;border:1px solid #ffffff1a;grid-template-columns:1fr;gap:4px;padding:4px;display:grid}.workspace-switch button,.nav-list button{color:#dce7df;background:0 0}.workspace-switch button.active,.nav-list button.active{color:#17201c;background:#fff}.nav-list{gap:7px;display:grid}.nav-list button{justify-content:flex-start}.logout-button{background:var(--text);color:#f6fbf7;white-space:nowrap}.auth-panel{border-radius:var(--radius);background:#ffffff14;border:1px solid #ffffff1a;gap:12px;margin-top:auto;padding:14px;display:grid}.auth-panel label,.stack-form{gap:8px;display:grid}.auth-panel span{color:#c9d7cf;font-size:.8rem}.auth-panel input{background:#fffffff0}.password-field{position:relative}.password-field input{padding-right:44px}.password-field button{color:var(--muted);background:0 0;min-height:34px;padding:7px;position:absolute;top:4px;right:4px}.auth-actions{grid-template-columns:repeat(2,1fr);gap:8px;display:grid}.auth-actions button,.stack-form button{background:var(--primary);color:#fff}.auth-actions button:first-child{color:#17201c;background:#f0f5f1}.auth-message{border-radius:var(--radius);color:#dce7df;overflow-wrap:anywhere;background:#ffffff14;border:1px solid #ffffff1a;align-items:flex-start;gap:8px;padding:12px;font-size:.86rem;line-height:1.4;display:flex}.auth-message.signed-in{color:#eaf6ef;background:#eaf6ef24}.auth-message svg{flex:none;margin-top:2px}.workspace{grid-template-rows:auto 1fr;gap:22px;padding:28px;display:grid}.topbar{justify-content:space-between;align-items:start;gap:18px;display:flex}.topbar-actions{justify-content:flex-end;align-items:flex-start;gap:10px;display:flex}.eyebrow{color:var(--primary);letter-spacing:0;text-transform:uppercase;font-size:.82rem;font-weight:700}.topbar h1{letter-spacing:0;margin-top:4px;font-size:clamp(1.8rem,3vw,2.7rem);line-height:1.05}.api-pill{background:var(--surface);border:1px solid var(--line);color:var(--muted);overflow-wrap:anywhere;border-radius:999px;flex:0 520px;justify-content:flex-start;align-items:center;gap:8px;min-height:38px;padding:8px 12px;font-size:.86rem;display:inline-flex}.api-pill.signed-in{color:var(--primary-strong);background:#eaf6ef}.topbar-actions .api-pill{flex-basis:auto}.grid{gap:18px;display:grid}.two-columns{grid-template-columns:repeat(2,minmax(0,1fr))}.calendar-layout{grid-template-columns:minmax(260px,360px) minmax(0,1fr)}.wide{grid-column:1/-1}.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);min-width:0;padding:18px}.panel-header{align-items:center;gap:9px;margin-bottom:16px;display:flex}.panel-header h2{letter-spacing:0;font-size:1rem}.welcome-panel{align-content:start;gap:12px;display:grid}.welcome-copy{gap:8px;display:grid}.welcome-copy strong{font-size:1.3rem;line-height:1.25}.welcome-copy span{color:var(--muted);line-height:1.5}.metrics{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;display:grid}.metric{background:var(--surface-muted);border-radius:7px;gap:8px;min-height:130px;padding:14px;display:grid}.metric svg{color:var(--primary)}.metric span,.lesson-main span,.lesson-main small,.person-card span,.material-card span{color:var(--muted);font-size:.9rem}.metric strong{align-self:end;font-size:1.75rem}.lesson-list,.people-list,.material-list,.table,.task-list{gap:10px;display:grid}.lesson-card{border:1px solid var(--line);border-radius:var(--radius);background:#fbfcfb;grid-template-columns:54px minmax(0,1fr) auto auto;align-items:center;gap:12px;padding:12px;display:grid}.compact .lesson-card{grid-template-columns:54px minmax(0,1fr) auto}.date-tile{background:#e8f3ed;border-radius:7px;place-items:center;width:54px;height:54px;line-height:1;display:grid}.date-tile strong{font-size:1.2rem}.date-tile span{color:var(--primary-strong);font-size:.8rem}.lesson-main{gap:3px;min-width:0;display:grid}.lesson-actions{gap:6px;display:flex}.lesson-actions button,.material-card button{color:var(--text);background:#edf2ee;min-height:36px;padding:8px 10px}.status{text-transform:capitalize;border-radius:999px;justify-content:center;min-width:86px;padding:5px 9px;font-size:.78rem;font-weight:700;display:inline-flex}.status.scheduled,.status.unpaid{color:var(--warning);background:#fff4de}.status.completed,.status.paid{color:var(--primary-strong);background:#e7f6ec}.status.canceled{color:var(--danger);background:#fdecea}.split-inputs{grid-template-columns:1fr 1fr;gap:8px;display:grid}.row{border:1px solid var(--line);border-radius:var(--radius);background:#fbfcfb;grid-template-columns:130px minmax(0,1fr) 110px auto;align-items:center;gap:10px;padding:12px;display:grid}.row span{color:var(--muted)}.invoice-row{grid-template-columns:130px minmax(0,1fr) 110px 110px}.status-button{background:0 0;min-height:0;padding:0}.person-card,.material-card,.task-list span,.task-list button{border:1px solid var(--line);border-radius:var(--radius);background:#fbfcfb;padding:13px}.task-list button{color:var(--text);text-align:left;justify-content:flex-start;width:100%;min-height:0;line-height:1.35}.person-card{gap:5px;display:grid}.material-card{justify-content:space-between;align-items:center;gap:12px;display:flex}.material-card div{gap:4px;min-width:0;display:grid}@media (width<=1040px){.app-shell,.two-columns,.calendar-layout{grid-template-columns:1fr}.sidebar{position:static}.nav-list{grid-template-columns:repeat(3,minmax(0,1fr))}.topbar{flex-direction:column}.topbar-actions{justify-content:flex-start;width:100%}.api-pill{width:100%}}@media (width<=680px){.workspace,.sidebar{padding:16px}.nav-list,.metrics,.split-inputs{grid-template-columns:1fr}.lesson-card,.compact .lesson-card,.row,.invoice-row{grid-template-columns:1fr;align-items:start}.date-tile{width:48px;height:48px}.lesson-actions,.material-card,.topbar-actions{flex-direction:column;align-items:stretch}}