*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:Arial,sans-serif;
}

body{
    background:#0f172a;
    color:#fff;
}

.login{
    display:flex;
    justify-content:center;
    align-items:center;
    height:100vh;
}

.login-box{
    width:380px;
    background:#1e293b;
    padding:35px;
    border-radius:10px;
}

.login-box h1{
    margin-bottom:25px;
    text-align:center;
    font-size:24px;
}

.login-box input{
    width:100%;
    padding:12px;
    margin-bottom:15px;
    border:none;
    border-radius:6px;
}

.login-box button{
    width:100%;
    padding:12px;
    border:none;
    border-radius:6px;
    cursor:pointer;
    background:#2563eb;
    color:#fff;
    font-size:15px;
}

.login-box button:hover{
    background:#1d4ed8;
}

.error{
    background:#dc2626;
    padding:10px;
    border-radius:6px;
    margin-bottom:15px;
}

.sidebar{
    position:fixed;
    left:0;
    top:0;
    width:250px;
    height:100vh;
    background:linear-gradient(180deg,#1e40af,#1d4ed8);
    padding:25px;
    box-shadow:0 0 30px rgba(0,0,0,.25);
}

.sidebar h2{
    margin-bottom:30px;
}

.sidebar a{
    display:block;
    color:#fff;
    text-decoration:none;
    padding:14px 18px;
    margin-bottom:8px;
    border-radius:10px;
    transition:.2s;
}

.sidebar a:hover{
    background:rgba(255,255,255,.15);
    color:#fff;
}

.content{
    margin-left:230px;
    padding:40px;
}

.page-header{
    display:flex;
    justify-content:space-between;
    align-items:center;
    margin-bottom:25px;
}

.card{
    background:#ffffff;
    color:#111827;
    border-radius:14px;
    padding:20px;
    box-shadow:0 10px 30px rgba(0,0,0,.15);
}

table{
    width:100%;
    border-collapse:collapse;
}

th{
    background:#eff6ff;
    color:#1e3a8a;
    padding:14px;
    text-align:left;
}

td{
    padding:14px;
    border-bottom:1px solid #e5e7eb;
}

button{
    background:#2563eb;
    color:#fff;
    border:none;
    padding:9px 16px;
    border-radius:8px;
    cursor:pointer;
    transition:.2s;
}

button:hover{
    background:#1d4ed8;
}

input{
    border:1px solid #d1d5db;
    border-radius:8px;
    padding:10px;
}

.modal-content{
    border-radius:16px;
    box-shadow:0 20px 50px rgba(0,0,0,.3);
}

.modal{
    position:fixed;
    left:0;
    top:0;
    width:100%;
    height:100%;
    background:rgba(0,0,0,.55);
    display:none;
    z-index:999;
}

.modal-content{
    width:500px;
    background:#fff;
    margin:100px auto;
    padding:25px;
    border-radius:8px;
}

.modal-content{
    color:#111827;
}

.modal-content h2{
    color:#111827;
    margin-bottom:20px;
}

.modal-content label{
    display:block;
    color:#374151;
    margin:15px 0 8px;
    font-weight:600;
}

.modal-content input{
    width:100%;
}

.modal-content button{
    margin-top:20px;
}