:root {
    --color-primario: #1e3a5f;
    --color-primario-claro: #2c5282;
    --color-fondo: #f4f6f8;
    --color-texto: #1a1a1a;
    --color-borde: #d0d7de;
    --color-ok: #1a7f37;
    --color-error: #cf222e;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--color-fondo);
    color: var(--color-texto);
}

.barra-nav {
    background: var(--color-primario);
    color: white;
    padding: 14px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.marca {
    font-weight: 600;
    font-size: 1.1rem;
}

.enlaces-nav a {
    color: white;
    text-decoration: none;
    margin-left: 18px;
    font-size: 0.95rem;
    opacity: 0.9;
}

.enlaces-nav a:hover {
    opacity: 1;
    text-decoration: underline;
}

.contenido {
    max-width: 720px;
    margin: 0 auto;
    padding: 32px 20px 60px;
}

h1 {
    font-size: 1.6rem;
    margin-bottom: 8px;
}

.subtitulo {
    color: #555;
    margin-top: 0;
}

.aviso {
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 16px;
    font-size: 0.95rem;
}

.aviso-ok {
    background: #e6f4ea;
    color: var(--color-ok);
    border: 1px solid #b7e1c1;
}

.aviso-error {
    background: #fde8e8;
    color: var(--color-error);
    border: 1px solid #f3b4b4;
}

.caja-login {
    max-width: 360px;
    margin: 60px auto;
    background: white;
    padding: 32px;
    border-radius: 10px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    text-align: center;
}

form {
    background: white;
    padding: 24px;
    border-radius: 10px;
    box-shadow: 0 1px 6px rgba(0, 0, 0, 0.06);
}

.campo {
    margin-bottom: 18px;
    text-align: left;
}

.campo label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
    font-size: 0.92rem;
}

.ayuda {
    font-weight: 400;
    color: #666;
    font-size: 0.85rem;
}

.ayuda-campo {
    font-weight: 400;
    color: #666;
    font-size: 0.82rem;
    margin: 4px 0 0;
}

input[type="text"],
input[type="password"],
input[type="email"],
textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--color-borde);
    border-radius: 6px;
    font-size: 0.95rem;
    font-family: inherit;
}

textarea {
    resize: vertical;
}

.campo-checkbox label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 400;
}

button {
    background: var(--color-primario);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 6px;
    font-size: 0.95rem;
    cursor: pointer;
    font-weight: 600;
}

button:hover {
    background: var(--color-primario-claro);
}

.boton-secundario {
    background: #555;
}

.boton-secundario:hover {
    background: #333;
}

.tarjetas {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
    margin-top: 24px;
}

.tarjeta {
    display: block;
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 1px 6px rgba(0, 0, 0, 0.06);
    text-decoration: none;
    color: var(--color-texto);
    border-left: 4px solid var(--color-primario);
}

.tarjeta h2 {
    margin: 0 0 6px;
    font-size: 1.1rem;
    color: var(--color-primario);
}

.tarjeta p {
    margin: 0;
    font-size: 0.9rem;
    color: #555;
}

.caja-historial {
    background: #1a1a1a;
    color: #ddd;
    padding: 16px;
    border-radius: 8px;
    overflow-x: auto;
    font-size: 0.85rem;
    line-height: 1.6;
}

hr {
    border: none;
    border-top: 1px solid var(--color-borde);
    margin: 28px 0;
}