:root{--saied-green:#009b3a;--heritage-green:#006b35;--sheet-music-white:#fff;--concert-black:#111;--instrument-wood-beige:#d8c2a3;--retail-stone-gray:#e4e0d8;--brass-gold:#c99a2e;--piano-ivory:#f7f1e4;--open-sign-red:#d62828}*{box-sizing:border-box}body{color:var(--concert-black);background:var(--piano-ivory);margin:0;font-family:Inter,Aptos,Open Sans,Arial,sans-serif}a{color:inherit;text-decoration:none}button,input,select{font:inherit}.app-shell{grid-template-rows:74px 1fr;min-height:100vh;display:grid}.header{background:var(--heritage-green);color:#fff;border-bottom:4px solid var(--saied-green);justify-content:space-between;align-items:center;padding:0 28px;display:flex}.brand-title{letter-spacing:.08em;text-transform:uppercase;font-size:1.25rem;font-weight:900}.brand-subtitle{opacity:.95;font-style:italic}.shell-body{grid-template-columns:260px 1fr;min-height:calc(100vh - 74px);display:grid}.sidebar{border-right:1px solid var(--retail-stone-gray);background:#fff;padding:24px 16px}.sidebar a{color:var(--heritage-green);border-radius:10px;margin-bottom:8px;padding:12px 14px;font-weight:700;display:block}.sidebar a:hover{background:#eef8f1}.main{padding:32px}.card{border:1px solid var(--retail-stone-gray);background:#fff;border-radius:16px;padding:24px;box-shadow:0 2px 8px #0000000a}.grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;display:grid}.h1{color:var(--heritage-green);margin:0 0 16px;font-size:clamp(2rem,4vw,3.2rem);font-weight:900;line-height:1.05}.h2{color:var(--heritage-green);margin:0 0 12px;font-size:1.35rem}.muted{color:#565656}.button{background:var(--saied-green);color:#fff;border:0;border-radius:10px;justify-content:center;align-items:center;padding:12px 18px;font-weight:800;display:inline-flex}.secondary-button{color:var(--saied-green);border:2px solid var(--saied-green);background:#fff}.alert{border-left:6px solid var(--brass-gold);background:#fffdf5;border-radius:10px;padding:16px}table{border-collapse:collapse;background:#fff;width:100%}th,td{border-bottom:1px solid var(--retail-stone-gray);text-align:left;padding:12px}th{color:#fff;background:var(--heritage-green)}.form-row{gap:8px;margin-bottom:14px;display:grid}.input{background:#fff;border:1px solid #ccc;border-radius:10px;padding:12px}@media (max-width:800px){.shell-body{grid-template-columns:1fr}.sidebar{gap:8px;display:flex;overflow:auto}.sidebar a{white-space:nowrap}}.header-actions{align-items:center;gap:10px;display:flex}.header-button{color:var(--heritage-green);background:#fff;border:1px solid #fff6;border-radius:10px;justify-content:center;align-items:center;padding:10px 14px;font-weight:800;display:inline-flex}.header-button.secondary{color:#fff;background:0 0;border-color:#ffffff8c}.error-message{color:var(--open-sign-red);background:#fff2f2;border:1px solid #f2b8b8;border-radius:10px;margin:12px 0;padding:12px 14px;font-weight:700}.header-left{align-items:center;gap:22px;min-width:0;display:flex}.brand-block{flex:none}.user-header-card{border-left:1px solid #ffffff59;min-width:0;padding-left:18px}.user-header-name{font-size:1rem;font-weight:900;line-height:1.2}.user-header-meta{opacity:.95;flex-wrap:wrap;align-items:center;gap:7px;margin-top:3px;font-size:.86rem;display:flex}@media (max-width:900px){.app-shell{grid-template-rows:auto 1fr}.header{align-items:flex-start;gap:14px;padding:16px 18px}.header-left{flex-direction:column;align-items:flex-start;gap:10px}.user-header-card{border-top:1px solid #ffffff59;border-left:0;padding-top:10px;padding-left:0}}