body {
    font-family: Arial;
    background-color: #f5f1e8; /* beige */
}

header {
    background-color: #0d47a1; /* azul */
    color: white;
    padding: 15px;
    text-align: center;
}

.chat {
    background: #e3f2fd; /* celeste pastel */
    padding: 15px;
    margin: 10px;
    border-radius: 10px;
}

.mensaje {
    background: white;
    padding: 10px;
    margin: 5px;
    border-radius: 5px;
}

footer {
    background-color: #0d47a1;
    color: white;
    text-align: center;
    padding: 10px;
    position: fixed;
    bottom: 0;
    width: 100%;
}

.login-container {
    width: 350px;
    margin: 80px auto;
    background: #e3f2fd;
    padding: 25px;
    border-radius: 10px;
    text-align: center;
}

.login-container input {
    width: 90%;
    padding: 10px;
    margin: 8px 0;
    border-radius: 5px;
    border: 1px solid #ccc;
}

.login-container button {
    background-color: #0d47a1;
    color: white;
    padding: 10px;
    border: none;
    width: 95%;
    border-radius: 5px;
    cursor: pointer;
}

.login-container button:hover {
    background-color: #1565c0;
}

.error {
    color: red;
}

/* Header con botón */
.header-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Botón salir */
.btn-salir {
    background-color: #c62828;
    color: white;
    padding: 8px 15px;
    border-radius: 5px;
    text-decoration: none;
    font-size: 14px;
}

.btn-salir:hover {
    background-color: #e53935;
}

/* Contenedor chat */
.chat-container {
    display: flex;
    flex-direction: column;
    padding: 10px;
}

/* Mensajes */
.mensaje {
    max-width: 70%;
    padding: 10px;
    margin: 5px;
    border-radius: 10px;
}

/* Mensaje propio */
.propio {
    background-color: #bbdefb;
    align-self: flex-end;
}

/* Mensaje otro */
.otro {
    background-color: white;
    align-self: flex-start;
}

/* Formulario */
.form-chat {
    display: flex;
    flex-direction: column;
    padding: 10px;
}

.form-chat input[type="text"] {
    padding: 10px;
    margin-bottom: 5px;
}

.form-chat button {
    background-color: #0d47a1;
    color: white;
    padding: 10px;
    border: none;
}

/* RESPONSIVE */
@media (max-width: 600px) {
    .mensaje {
        max-width: 90%;
        font-size: 14px;
    }

    header h2 {
        font-size: 18px;
    }

    .btn-salir {
        font-size: 12px;
        padding: 6px 10px;
    }
}

.login-container {
    width: 350px;
    margin: 80px auto;
    background: #e3f2fd;
    padding: 25px;
    border-radius: 10px;
    text-align: center;
}

.login-container input {
    width: 90%;
    padding: 10px;
    margin: 8px 0;
}

.password-container {
    position: relative;
}

.password-container span {
    position: absolute;
    right: 15px;
    top: 12px;
    cursor: pointer;
}

.login-container button {
    background-color: #0d47a1;
    color: white;
    padding: 10px;
    border: none;
    width: 95%;
    border-radius: 5px;
}

.error {
    color: red;
}

/* FORM CHAT */
.form-chat {
    display: flex;
    flex-direction: column;
    padding: 10px;
}

/* TEXTAREA GRANDE */
.form-chat textarea {
    width: 100%;
    min-height: 70px;
    resize: none;
    padding: 12px;
    border-radius: 10px;
    border: 1px solid #ccc;
    margin-bottom: 8px;
    font-size: 14px;
}

/* BOTÓN */
.form-chat button {
    background-color: #0d47a1;
    color: white;
    padding: 12px;
    border: none;
    border-radius: 8px;
    font-size: 15px;
}

/* INPUT FILE */
.form-chat input[type="file"] {
    margin-bottom: 8px;
}

/* CHAT MÁS MODERNO */
.chat-container {
    max-height: 60vh;
    overflow-y: auto;
}

/* RESPONSIVE */
@media (max-width: 600px) {
    .form-chat textarea {
        font-size: 13px;
    }
}

/* botón nuevo chat */
.btn-nuevo {
    background-color: #2e7d32;
    color: white;
    padding: 8px 12px;
    margin-right: 10px;
    border-radius: 5px;
    text-decoration: none;
}

.btn-nuevo:hover {
    background-color: #43a047;
}

/* mejorar select */
select {
    width: 90%;
    padding: 10px;
    margin: 10px 0;
}

/* contenedor botones header */
.header-buttons {
    display: flex;
    gap: 10px;
}

/* botón volver al panel */
.btn-panel {
    background-color: #1565c0;
    color: white;
    padding: 8px 12px;
    border-radius: 5px;
    text-decoration: none;
}

.btn-panel:hover {
    background-color: #1e88e5;
}

/* BOTONES GENERALES HEADER */
.btn-header {
    background-color: #e0e0e0; /* gris claro */
    color: black;
    padding: 8px 14px;
    border-radius: 6px;
    text-decoration: none;
    font-size: 14px;
    border: 1px solid #bdbdbd;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);

}

/* efecto hover */
.btn-header:hover {
    background-color: #d6d6d6;
}