* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: #f4f6f9;
    color: #222;
}

.login-body {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #eef1f5;
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-card {
    background: #fff;
    padding: 35px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.12);
}

.login-card h1 {
    margin: 0;
    color: #1d3557;
    text-align: center;
}

.login-card h2 {
    margin-top: 5px;
    margin-bottom: 25px;
    font-size: 18px;
    text-align: center;
    font-weight: normal;
}

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

input {
    width: 100%;
    padding: 11px;
    margin-top: 6px;
    border: 1px solid #ccc;
    border-radius: 6px;
}

button, .btn {
    display: inline-block;
    margin-top: 22px;
    padding: 11px 18px;
    background: #1d3557;
    color: #fff;
    border: none;
    border-radius: 6px;
    text-decoration: none;
    cursor: pointer;
}

button:hover, .btn:hover {
    background: #12233b;
}

.alerta-error {
    background: #ffe1e1;
    color: #9b1c1c;
    padding: 10px;
    border-radius: 6px;
    margin-bottom: 15px;
}

.topbar {
    height: 60px;
    background: #1d3557;
    color: #fff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 25px;
}

.topbar a {
    color: #fff;
    text-decoration: none;
}

.layout {
    display: flex;
    min-height: calc(100vh - 60px);
}

.sidebar {
    width: 240px;
    background: #263850;
    padding-top: 20px;
}

.sidebar a {
    display: block;
    color: #fff;
    padding: 14px 22px;
    text-decoration: none;
}

.sidebar a:hover {
    background: #1d3557;
}

.contenido {
    flex: 1;
    padding: 30px;
}

.cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    margin-top: 20px;
}

.card {
    background: #fff;
    padding: 22px;
    border-radius: 10px;
    box-shadow: 0 5px 14px rgba(0,0,0,0.08);
}

.card h3 {
    margin: 0 0 10px;
    font-size: 17px;
}

.card p {
    font-size: 34px;
    margin: 0;
    font-weight: bold;
    color: #1d3557;
}

.card.alerta p {
    color: #c0392b;
}

.panel {
    background: #fff;
    margin-top: 30px;
    padding: 22px;
    border-radius: 10px;
    box-shadow: 0 5px 14px rgba(0,0,0,0.08);
}

.form-busqueda {
    display: flex;
    gap: 10px;
    align-items: center;
}

.form-busqueda input {
    max-width: 500px;
}

.tabla {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
}

.tabla th,
.tabla td {
    padding: 12px;
    border-bottom: 1px solid #ddd;
    text-align: left;
    font-size: 14px;
}

.tabla th {
    background: #1d3557;
    color: #fff;
}

.btn-tabla {
    display: inline-block;
    padding: 7px 11px;
    background: #1d3557;
    color: #fff;
    border-radius: 5px;
    text-decoration: none;
    font-size: 13px;
}

.btn-tabla:hover {
    background: #12233b;
}

.formulario {
    max-width: 700px;
}

.formulario input,
.formulario textarea,
.formulario select {
    width: 100%;
    padding: 11px;
    margin-top: 6px;
    margin-bottom: 12px;
    border: 1px solid #ccc;
    border-radius: 6px;
}

.btn-secundario {
    background: #6c757d;
}

.btn-secundario:hover {
    background: #555;
}
.mayuscula {
    text-transform: uppercase;
}