/* Header */
.header {
    width: 100%;
    padding: 15px 25px;
    background: #1a1a1a;
    border-bottom: 1px solid #333;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.header_left {
    display: flex;
    align-items: center;
    text-align: center;
}

.page_title {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 10px;
}

.page_title img {
    width: 40px;
    height: auto;
}

.header_right {
    display: flex;
    gap: 25px;
    align-items: center;
}

.username {
    font-size: 14px;
    color: #ddd;
}

/* Estilo base unificado para acciones del header */
.link,
.logout,
.theme_toggle {
    background: transparent;
    border: 1px solid #333;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    color: #ddd;
    text-decoration: none;
    transition: background-color 0.2s ease,
                border-color 0.2s ease,
                color 0.2s ease;
}

.link:hover,
.logout:hover,
.theme_toggle:hover {
    background-color: #222;
    border-color: #555;
}

.link:focus,
.logout:focus,
.theme_toggle:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.15);
}

/* Texto interno del botón de tema */
.theme_icon {
    pointer-events: none;
    user-select: none;
}

/* Responsive: móviles */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        align-items: flex-end;
        padding: 10px 15px;
    }

    .header_right {
        flex-direction: column;
        gap: 15px;
        align-items: flex-end;
        justify-content: center;
        width: 100%;
        text-align: end;
    }

    .page_title {
        font-size: 16px;
    }

    .username,
    .link,
    .logout,
    .theme_toggle {
        font-size: 13px;
    }

    .link,
    .logout,
    .theme_toggle {
        padding: 5px 10px;
    }
}