:root{--hsg-blau: #1a3a6b;--hsg-blau-hell: #2a5298;--hsg-weiss: #ffffff;--hsg-grau: #f4f5f7;--hsg-grau-dunkel: #6b7280;--hsg-rot: #dc2626;--radius: 8px;--shadow: 0 1px 3px rgba(0,0,0,.12)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--hsg-grau);color:#1f2937;min-height:100vh}.app-nav{background:var(--hsg-blau);color:var(--hsg-weiss);display:flex;align-items:center;gap:1.5rem;padding:0 1rem;height:52px;position:sticky;top:0;z-index:100}.app-nav__logo{font-weight:700;font-size:1rem;margin-right:auto}.app-nav a{color:#fffc;text-decoration:none;font-size:.95rem;padding:.25rem .5rem;border-radius:4px}.app-nav a.active,.app-nav a:hover{color:var(--hsg-weiss);background:#ffffff26}.app-nav a.active .app-nav__rolle,.app-nav a:hover .app-nav__rolle{font-size:.8rem;opacity:.7;margin-left:auto}.app-nav a.active .app-nav__logout,.app-nav a:hover .app-nav__logout{background:#ffffff26;color:var(--hsg-weiss);border:1px solid rgba(255,255,255,.3);border-radius:4px;padding:.25rem .75rem;font-size:.9rem;cursor:pointer}.app-nav a.active .app-nav__logout:hover,.app-nav a:hover .app-nav__logout:hover{background:#ffffff40}.app-main{max-width:900px;margin:0 auto;padding:1rem}.card{background:var(--hsg-weiss);border-radius:var(--radius);box-shadow:var(--shadow);padding:1rem;margin-bottom:.75rem}.btn{display:inline-flex;align-items:center;gap:.4rem;padding:.5rem 1rem;border-radius:var(--radius);border:none;cursor:pointer;font-size:.9rem;font-weight:500;text-decoration:none}.btn-primary{background:var(--hsg-blau);color:var(--hsg-weiss)}.btn-primary:hover{background:var(--hsg-blau-hell)}.btn-ghost{background:transparent;color:var(--hsg-grau-dunkel)}.btn-ghost:hover{background:var(--hsg-grau)}.btn-danger{background:var(--hsg-rot);color:var(--hsg-weiss)}.form-group{margin-bottom:1rem}.form-group label{display:block;font-size:.85rem;font-weight:500;margin-bottom:.35rem;color:#374151}.form-group input,.form-group textarea,.form-group select{width:100%;padding:.5rem .75rem;border:1px solid #d1d5db;border-radius:var(--radius);font-size:.95rem;font-family:inherit}.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:2px solid var(--hsg-blau);border-color:var(--hsg-blau)}.chip-group{display:flex;flex-wrap:wrap;gap:.4rem}.chip{padding:.25rem .6rem;border-radius:999px;font-size:.8rem;background:var(--hsg-grau);border:1px solid #e5e7eb;cursor:pointer;-webkit-user-select:none;user-select:none}.chip.selected{background:var(--hsg-blau);color:var(--hsg-weiss);border-color:var(--hsg-blau)}.filter-bar{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1rem;align-items:center}.filter-bar input[type=search]{flex:1;min-width:160px;padding:.45rem .75rem;border:1px solid #d1d5db;border-radius:var(--radius);font-size:.9rem}.uebung-liste{display:flex;flex-direction:column;gap:.5rem}.uebung-card{background:var(--hsg-weiss);border-radius:var(--radius);box-shadow:var(--shadow);padding:.85rem 1rem;display:flex;justify-content:space-between;align-items:center;text-decoration:none;color:inherit;transition:box-shadow .15s}.uebung-card:hover{box-shadow:0 2px 8px #00000026}.uebung-card__info{flex:1}.uebung-card__titel{font-weight:600;margin-bottom:.2rem}.uebung-card__meta{font-size:.8rem;color:var(--hsg-grau-dunkel);display:flex;gap:.5rem;flex-wrap:wrap}.badge{display:inline-block;padding:.15rem .5rem;border-radius:999px;font-size:.75rem;font-weight:500;background:#dbeafe;color:#1e40af}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.page-header h1{font-size:1.3rem;font-weight:700}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--hsg-blau)}.login-box{background:var(--hsg-weiss);padding:2rem;border-radius:var(--radius);width:100%;max-width:360px;box-shadow:0 4px 20px #0000004d}.login-box h1{text-align:center;margin-bottom:.25rem;font-size:1.4rem;color:var(--hsg-blau)}.login-box p{text-align:center;font-size:.85rem;color:var(--hsg-grau-dunkel);margin-bottom:1.5rem}.error-msg{color:var(--hsg-rot);font-size:.85rem;margin-top:.5rem}