:root{--bg:#000;--card-bg:rgba(10,5,30,0.85);--primary:0,229,255;--secondary:233,30,219}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:#fff;font-family:Arial,sans-serif;min-height:100vh}.admin-shell{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.admin-card{width:100%;max-width:420px;background:var(--card-bg);border:1px solid rgba(var(--primary),.4);border-radius:16px;padding:32px;box-shadow:0 0 20px rgba(var(--primary),.25),inset 0 0 20px rgba(var(--primary),.05)}.admin-logo{font-size:22px;font-weight:700;letter-spacing:1px;text-align:center;color:#fff;text-shadow:0 0 10px rgba(var(--primary),.8),0 0 20px rgba(var(--primary),.4);margin-bottom:24px}.admin-field{width:100%;padding:12px 14px;margin-bottom:16px;background:rgba(255,255,255,.04);border:1.5px solid rgba(var(--primary),.4);border-radius:8px;color:#fff;font-size:15px}.admin-field:focus{outline:none;border-color:rgba(var(--primary),.9);box-shadow:0 0 12px rgba(var(--primary),.4)}.admin-field option{background-color:#0a051e;color:#fff}.admin-btn{width:100%;padding:12px;border-radius:8px;border:1.5px solid rgba(var(--primary),.7);background:rgba(var(--primary),.12);color:#fff;font-size:15px;font-weight:700;cursor:pointer;transition:box-shadow .2s,transform .1s}.admin-btn:hover{box-shadow:0 0 16px rgba(var(--primary),.4)}.admin-btn:active{transform:scale(.98)}.admin-btn.secondary{border-color:rgba(var(--secondary),.6);background:rgba(var(--secondary),.08)}.admin-btn.secondary:hover{box-shadow:0 0 16px rgba(var(--secondary),.3)}.admin-error{color:rgba(var(--secondary),.9);font-size:14px;margin-bottom:12px;text-align:center}.admin-topbar{display:flex;justify-content:space-between;align-items:center;padding:16px 24px;border-bottom:1px solid rgba(var(--primary),.25)}.admin-main{padding:32px 24px;max-width:960px;margin:0 auto}.folder-kaart{transition:box-shadow .2s,transform .15s,border-color .2s}.folder-kaart:hover{box-shadow:0 0 28px rgba(var(--kleur),.45);border-color:rgba(var(--kleur),.9)!important;transform:translateY(-3px)}