:root{--bs-green: #1f7a5c;--bs-green-deep: #12332f;--bs-mint: #8fd9bc;--bs-cream: #fbf7ef;--bs-gold: #ffb627;--bs-ink: #12332f;font-family:Avenir Next,Segoe UI,system-ui,-apple-system,sans-serif;line-height:1.5;color:var(--bs-ink);background:var(--bs-cream)}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%}body{min-height:100vh}.page{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:2rem 1.25rem 3rem;background:radial-gradient(ellipse at top,rgba(143,217,188,.35),transparent 55%),var(--bs-cream)}.card{width:min(420px,100%);background:#fff;border-radius:20px;padding:2rem 1.75rem 1.75rem;box-shadow:0 12px 40px #12332f14;text-align:center}.logo{width:min(280px,100%);height:auto;margin:0 auto 1.25rem;display:block}.mark{width:64px;height:64px;margin:0 auto 1rem;display:block}h1{font-size:1.35rem;font-weight:700;margin:0 0 .5rem;color:var(--bs-green-deep)}p{margin:0 0 1.25rem;color:#12332fbf;font-size:.98rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;background:var(--bs-green);color:var(--bs-cream);border:none;border-radius:999px;padding:.7rem 1.35rem;font-weight:600;font-size:.95rem;cursor:pointer;transition:opacity .2s}.btn:hover:not(:disabled){opacity:.9}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-secondary{composes:btn;background:transparent;color:var(--bs-green);border:1px solid var(--bs-green)}.btn-text{background:none;border:none;color:var(--bs-green);cursor:pointer;font-size:.9rem;padding:.5rem}.btn-back{background:none;border:none;color:var(--bs-green);cursor:pointer;font-size:1rem;padding:.5rem;font-weight:600}.btn-small{background:var(--bs-green);color:#fff;border:none;border-radius:6px;padding:.4rem .8rem;font-size:.85rem;cursor:pointer;font-weight:500}.btn-danger{background:#dc3545}.btn-upload{composes:btn;cursor:pointer}.spark{color:var(--bs-gold)}.foot{margin-top:1.5rem;font-size:.8rem;color:#12332f80}.form{display:flex;flex-direction:column;gap:1rem;margin-top:1.5rem}.input{border:1px solid rgba(18,51,47,.2);border-radius:8px;padding:.7rem 1rem;font-size:.95rem;width:100%}.input:focus{outline:none;border-color:var(--bs-green)}.error{color:#dc3545;font-size:.85rem;margin:-.5rem 0 0}.info{color:var(--bs-green);font-size:.9rem;margin:0 0 .5rem}.container{width:min(900px,100%);padding:2rem 1.25rem}.header{display:flex;align-items:center;justify-content:space-between;margin-bottom:2rem;gap:1rem}.header-info{flex:1}.header-info h2{margin:0;font-size:1.5rem;color:var(--bs-green-deep)}.user-email{margin:.25rem 0 0;font-size:.85rem;color:#12332f99}.classes-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1.25rem}.class-card{background:#fff;border-radius:12px;padding:1.5rem;box-shadow:0 4px 12px #12332f0f;transition:box-shadow .2s}.class-card:hover{box-shadow:0 6px 20px #12332f1a}.class-title{margin:0 0 1rem;font-size:1.1rem;color:var(--bs-green-deep);cursor:pointer}.class-title:hover{color:var(--bs-green)}.class-actions{display:flex;gap:.5rem}.class-card-add{background:#fff;border:2px dashed rgba(31,122,92,.3);border-radius:12px;padding:1.5rem;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.5rem;cursor:pointer;color:var(--bs-green);font-weight:600;font-size:.95rem;transition:all .2s}.class-card-add:hover{border-color:var(--bs-green);background:#1f7a5c05}.add-icon{font-size:2rem;line-height:1}.materials-section{background:#fff;border-radius:12px;padding:1.5rem;box-shadow:0 4px 12px #12332f0f}.materials-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem}.materials-header h3{margin:0;font-size:1.2rem;color:var(--bs-green-deep)}.empty-state{text-align:center;color:#12332f80;padding:2rem}.materials-list{display:flex;flex-direction:column;gap:.75rem}.material-item{display:flex;justify-content:space-between;align-items:center;padding:1rem;border:1px solid rgba(18,51,47,.1);border-radius:8px}.material-info{flex:1}.material-title{margin:0 0 .25rem;font-weight:600;color:var(--bs-green-deep)}.material-meta{margin:0;font-size:.8rem;color:#12332f80}