*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

body{
    font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;
    background:#eef2f7;
    color:#243447;
}

/******************************/
/* LOGIN */
/******************************/

.login-body{
    background:linear-gradient(135deg,#0f2747,#1d4f8b);
    min-height:100vh;
    display:flex;
    justify-content:center;
    align-items:center;
}

.login-box{
    width:430px;
    background:#fff;
    border-radius:15px;
    padding:40px;
    box-shadow:0 15px 40px rgba(0,0,0,.20);
    text-align:center;
}

.login-logo{
    width:140px;
    margin-bottom:20px;
}

.login-box h1{
    color:#16365c;
    font-size:34px;
}

.login-subtitle{
    color:#6b7b8c;
    margin-bottom:25px;
}

.login-box label{
    display:block;
    text-align:left;
    font-weight:bold;
    margin-top:18px;
    margin-bottom:8px;
}

.login-box input{
    width:100%;
    padding:13px;
    border:1px solid #d5dce4;
    border-radius:8px;
    font-size:15px;
}

.login-box input:focus{
    outline:none;
    border-color:#2f73c9;
}

.version{
    margin-top:25px;
    color:#999;
    font-size:13px;
}

/******************************/
/* BOTONES */
/******************************/

.btn-principal{
    width:100%;
    margin-top:25px;
    background:#1b5aa6;
    color:#fff;
    border:none;
    padding:14px;
    border-radius:8px;
    font-size:16px;
    cursor:pointer;
    transition:.25s;
}

.btn-principal:hover{
    background:#153f74;
}

.btn{
    background:#1b5aa6;
    color:#fff;
    border:none;
    padding:10px 18px;
    border-radius:6px;
    cursor:pointer;
}

.btn:hover{
    background:#153f74;
}

.btn-verde{
    background:#28a745;
}

.btn-rojo{
    background:#dc3545;
}

.btn-naranja{
    background:#ff9800;
}

/******************************/
/* MENSAJES */
/******************************/

.alerta-error{
    background:#fdecec;
    color:#b91c1c;
    border-left:5px solid #dc2626;
    padding:12px;
    margin-bottom:20px;
    border-radius:6px;
}

.alerta-ok{
    background:#edf9ee;
    color:#1d7a35;
    border-left:5px solid #16a34a;
    padding:12px;
    margin-bottom:20px;
    border-radius:6px;
}

.alerta-info{
    background:#eef6ff;
    color:#1d4ed8;
    border-left:5px solid #2563eb;
    padding:12px;
    margin-bottom:20px;
    border-radius:6px;
}

/******************************/
/* HEADER */
/******************************/

.topbar{
    background:#16365c;
    color:#fff;
    padding:15px 30px;
    display:flex;
    justify-content:space-between;
    align-items:center;
}

.topbar img{
    width:60px;
}

.topbar h2{
    font-size:28px;
}

.usuario{
    text-align:right;
}

.usuario small{
    color:#d5dce4;
}

/******************************/
/* CONTENIDO */
/******************************/

.contenedor{
    width:1200px;
    margin:35px auto;
}

.card{
    background:#fff;
    border-radius:12px;
    padding:25px;
    margin-bottom:25px;
    box-shadow:0 5px 20px rgba(0,0,0,.08);
}

.card h2,
.card h3{
    color:#16365c;
    margin-bottom:20px;
}

/******************************/
/* FORMULARIOS */
/******************************/

label{
    display:block;
    margin-top:15px;
    margin-bottom:8px;
    font-weight:bold;
}

input,
select,
textarea{
    width:100%;
    padding:11px;
    border:1px solid #d6dde5;
    border-radius:7px;
    font-size:14px;
}

textarea{
    min-height:120px;
    resize:vertical;
}

input:focus,
select:focus,
textarea:focus{
    outline:none;
    border-color:#2f73c9;
}

/******************************/
/* TABLAS */
/******************************/

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

table th{
    background:#16365c;
    color:#fff;
    padding:12px;
    text-align:left;
}

table td{
    padding:11px;
    border-bottom:1px solid #edf1f4;
}

table tr:nth-child(even){
    background:#fafbfd;
}

table tr:hover{
    background:#eef6ff;
}

/******************************/
/* DASHBOARD */
/******************************/

.kpis{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:20px;
}

.kpi{
    background:#fff;
    border-radius:12px;
    padding:20px;
    text-align:center;
    box-shadow:0 4px 15px rgba(0,0,0,.08);
}

.kpi h3{
    color:#1b5aa6;
    font-size:34px;
}

.kpi span{
    color:#666;
}

/******************************/
/* RESPONSIVE */
/******************************/

@media(max-width:1200px){

.contenedor{
    width:95%;
}

.kpis{
    grid-template-columns:repeat(2,1fr);
}

}

.menu-principal{
    background:#102b4a;
    padding:12px 30px;
    display:flex;
    gap:10px;
    flex-wrap:wrap;
}

.menu-principal a{
    color:#fff;
    text-decoration:none;
    background:#245f9f;
    padding:10px 15px;
    border-radius:7px;
    font-size:14px;
    transition:.25s;
}

.menu-principal a:hover{
    background:#1b4a7d;
}

@media(max-width:700px){

    .login-box{
        width:95%;
    }

    .kpis{
        grid-template-columns:1fr;
    }

    .menu-principal{
        padding:10px;
    }

    .menu-principal a{
        width:100%;
        text-align:center;
    }
}

.acciones-tabla{
    display:flex;
    gap:8px;
    align-items:center;
    flex-wrap:wrap;
}

.acciones-tabla .btn{
    display:inline-block;
    text-decoration:none;
    margin:0;
    white-space:nowrap;
}

table td{
    vertical-align:middle;
}