:root{--bg:#f6f4ef;--surface:#fff;--text:#19241e;--muted:#6d7972;--primary:#2f6b4f;--soft:#e5efe9;--line:#d9dfdb;--danger:#bd4b46;--warning:#ce7d20;--shadow:0 12px 36px rgba(28,46,36,.08)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif}aside{position:fixed;inset:0 auto 0 0;width:235px;background:#173c2a;color:#fff;padding:28px 18px;display:flex;flex-direction:column}.brand{display:flex;gap:12px;align-items:center;color:#fff;text-decoration:none;font-size:18px;padding:0 10px 28px}.brand b{display:grid;place-items:center;background:#fff;color:var(--primary);width:38px;height:38px;border-radius:12px}nav{display:grid;gap:5px}.nav-item{display:flex;align-items:center;gap:13px;color:#caddd2;text-decoration:none;padding:12px 14px;border-radius:11px;font-size:14px}.nav-item span{font-size:19px;width:22px;text-align:center}.nav-item:hover,.nav-item.active{background:rgba(255,255,255,.12);color:#fff}.logout{margin-top:auto;color:#caddd2;text-decoration:none;padding:12px 14px}.app{margin-left:235px;min-height:100vh;padding:30px 38px 60px;max-width:1600px}.app>header{display:flex;justify-content:space-between;align-items:center;margin-bottom:28px}.app h1{margin:0;font-size:26px}.app header p{margin:5px 0 0;color:var(--muted);font-size:13px}.user{display:flex;gap:10px;align-items:center}.user>span{display:grid;place-items:center;width:40px;height:40px;background:var(--primary);color:#fff;border-radius:50%;font-size:12px}.user div{display:grid}.user small,.panel small,td small,.loan-card small{display:block;color:var(--muted);margin-top:5px}.hero{display:flex;justify-content:space-between;align-items:center;background:linear-gradient(135deg,#2f6b4f,#1e5038);padding:30px 34px;border-radius:22px;color:#fff;box-shadow:var(--shadow)}.hero h2{font-size:30px;margin:8px 0}.hero p{margin:0;color:#dcebe2}.button,button{border:0;border-radius:11px;background:var(--primary);color:#fff;padding:12px 18px;font-weight:650;cursor:pointer;text-decoration:none}.button.light{background:#fff;color:var(--primary)}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:20px 0}.stats article{background:var(--surface);border-radius:16px;padding:20px;box-shadow:var(--shadow);display:grid;grid-template-columns:auto 1fr;column-gap:14px}.stats article>span{grid-row:1/3;display:grid;place-items:center;background:var(--soft);color:var(--primary);width:45px;height:45px;border-radius:13px;font-size:20px}.stats b{font-size:25px}.stats small{color:var(--muted)}.grid{display:grid;gap:20px}.grid.two{grid-template-columns:1.4fr 1fr}.grid.content{grid-template-columns:minmax(0,1fr) 350px}.panel{background:var(--surface);border-radius:18px;padding:22px;box-shadow:var(--shadow);overflow:auto}.panel h3{margin:0 0 18px}.panel-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.panel-head h3{margin:0}.panel-head a{color:var(--primary);font-size:13px;text-decoration:none}.list-row{display:flex;align-items:center;gap:13px;padding:13px 0;border-bottom:1px solid #edf0ee}.list-row:last-child{border:0}.list-row>div:nth-child(2){flex:1}.book-icon{display:grid;place-items:center!important;width:42px;height:42px;background:var(--soft);color:var(--primary);border-radius:10px}.tag{display:inline-block;background:var(--soft);color:var(--primary);padding:6px 9px;border-radius:999px;font-size:11px}.quick{display:grid;grid-template-columns:1fr 1fr;gap:10px}.quick a{background:var(--bg);color:var(--text);text-decoration:none;padding:18px 13px;border-radius:12px;font-size:13px}.quick a:hover{background:var(--soft)}table{border-collapse:collapse;width:100%;font-size:13px}th{text-align:left;color:var(--muted);font-size:11px;text-transform:uppercase;padding:12px;border-bottom:1px solid var(--line)}td{padding:14px 12px;border-bottom:1px solid #edf0ee}.status{padding:6px 9px;border-radius:999px;font-size:11px;background:var(--soft);color:var(--primary)}.status.ausgeliehen{background:#f7e7d4;color:#a35c0b}.form-panel form{display:grid;gap:13px}label{display:grid;gap:6px;color:var(--muted);font-size:11px;text-transform:uppercase;font-weight:650}input,select,textarea{width:100%;border:1px solid var(--line);border-radius:10px;background:#fff;padding:11px 12px;color:var(--text);font:inherit;text-transform:none}textarea{min-height:72px;resize:vertical}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}.set-card,.loan-card{border:1px solid var(--line);border-radius:15px;padding:16px;margin:12px 0;display:flex;gap:15px;align-items:center}.set-card p{color:var(--muted);font-size:13px}.set-icon{display:grid;place-items:center;width:60px;height:70px;background:var(--soft);color:var(--primary);font-size:24px;border-radius:12px}.loan-card>div:first-child{flex:1}.return-form{display:flex!important;grid-template-columns:1fr auto!important;flex-direction:row;gap:8px!important}.return-form select{width:auto}.system-row{display:flex;justify-content:space-between;padding:14px 0;border-bottom:1px solid var(--line);font-size:13px}.ok{color:var(--primary)}.alert{padding:12px 16px;border-radius:10px;margin-bottom:18px;font-size:13px}.success{background:var(--soft);color:var(--primary)}.danger{background:#f6dddd;color:var(--danger)}.login-page{display:grid;place-items:center;min-height:100vh;background:radial-gradient(circle at top,#e4efe8,var(--bg) 55%)}.login-card{background:#fff;width:min(420px,calc(100% - 32px));padding:36px;border-radius:24px;box-shadow:var(--shadow);text-align:center}.login-card .brand-mark{display:grid;place-items:center;margin:auto;width:58px;height:58px;border-radius:17px;background:var(--primary);color:#fff;font-size:27px}.login-card h1{margin:18px 0 7px}.login-card>p{color:var(--muted);margin-bottom:26px}.login-card form{display:grid;gap:15px;text-align:left}.login-card button{margin-top:5px}.login-card small{display:block;color:var(--muted);margin-top:20px}@media(max-width:1000px){.grid.content,.grid.two{grid-template-columns:1fr}.stats{grid-template-columns:1fr 1fr}}@media(max-width:720px){aside{position:fixed;z-index:10;inset:auto 0 0;width:auto;height:66px;padding:6px;background:#fff;color:var(--text);box-shadow:0 -8px 24px rgba(0,0,0,.06)}aside .brand,aside .logout{display:none}aside nav{display:flex;justify-content:space-around}aside .nav-item{display:grid;gap:1px;place-items:center;padding:5px;color:var(--muted);font-size:9px}.nav-item span{font-size:18px}.nav-item.active{background:transparent;color:var(--primary)}.app{margin:0;padding:20px 16px 90px}.user div{display:none}.hero{align-items:flex-start;gap:20px;flex-direction:column}.hero h2{font-size:25px}.stats{grid-template-columns:1fr 1fr}.stats article{padding:14px;column-gap:9px}.stats article>span{width:38px;height:38px}.stats b{font-size:21px}.panel{padding:16px;border-radius:15px}.grid.content{display:flex;flex-direction:column}.grid.content .form-panel{order:-1}table{min-width:620px}.quick{grid-template-columns:1fr}.form-row{grid-template-columns:1fr}.loan-card{align-items:flex-start;flex-direction:column}.return-form{width:100%}.return-form select{flex:1}.app>header{margin-bottom:20px}}